$MKTX
MARKETAXESS HOLDINGS INC

2017 Q4 Form 10-K Financial Statement

#000156459019003476 Filed on February 20, 2019

View on sec.gov

Income Statement

Concept 2017 Q4 2016 Q4 2016 Q3
Revenue $98.60M $94.40M $90.30M
YoY Change 4.45% 23.24% 21.7%
Cost Of Revenue $5.600M $9.200M $8.600M
YoY Change -39.13% 26.03% 21.13%
Gross Profit $93.00M $85.30M $81.70M
YoY Change 9.03% 22.91% 21.76%
Gross Profit Margin 94.32% 90.36% 90.48%
Selling, General & Admin $37.40M $30.60M $31.00M
YoY Change 22.22% 10.47% 14.39%
% of Gross Profit 40.22% 35.87% 37.94%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization $5.200M $4.300M $4.300M
YoY Change 20.93% -6.52% -8.51%
% of Gross Profit 5.59% 5.04% 5.26%
Operating Expenses $44.10M $34.90M $35.30M
YoY Change 26.36% 7.72% 11.36%
Operating Profit $48.90M $50.40M $46.40M
YoY Change -2.98% 36.22% 31.07%
Interest Expense $1.100M
YoY Change
% of Operating Profit 2.25%
Other Income/Expense, Net -$500.0K
YoY Change
Pretax Income $49.40M $50.30M $46.40M
YoY Change -1.79% 35.95% 31.07%
Income Tax $4.200M $17.20M $15.40M
% Of Pretax Income 8.5% 34.19% 33.19%
Net Earnings $33.50M $33.20M $30.90M
YoY Change 0.9% 35.51% 36.12%
Net Earnings / Revenue 33.98% 35.17% 34.22%
Basic Earnings Per Share
Diluted Earnings Per Share $883.9K $880.6K $817.5K
COMMON SHARES
Basic Shares Outstanding 37.58M
Diluted Shares Outstanding

Balance Sheet

Concept 2017 Q4 2016 Q4 2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments $406.5M $362.6M $161.4M
YoY Change 12.1% 27.5% 0.62%
Cash & Equivalents $167.0M $168.2M $161.4M
Short-Term Investments $239.5M $194.4M
Other Short-Term Assets $18.70M $11.60M $11.80M
YoY Change 61.21% 17.17% 63.89%
Inventory
Prepaid Expenses
Receivables $52.60M $50.70M $56.60M
Other Receivables $0.00 $0.00 $0.00
Total Short-Term Assets $238.3M $230.5M $229.8M
YoY Change 3.38% -7.84% 5.95%
LONG-TERM ASSETS
Property, Plant & Equipment $38.55M $31.10M $30.80M
YoY Change 23.95% 0.66% -0.65%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments $239.5M $194.4M $170.7M
YoY Change 23.2% 129.52% 78.74%
Other Assets $1.700M $8.600M $7.400M
YoY Change -80.23% -6.52% -9.76%
Total Long-Term Assets $342.9M $297.5M $272.4M
YoY Change 15.27% 57.46% 36.61%
TOTAL ASSETS
Total Short-Term Assets $238.3M $230.5M $229.8M
Total Long-Term Assets $342.9M $297.5M $272.4M
Total Assets $581.2M $528.0M $502.2M
YoY Change 10.08% 20.26% 20.63%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable $14.20M $15.10M $15.30M
YoY Change -5.96% 22.76% 14.18%
Accrued Expenses $36.50M $34.80M $28.50M
YoY Change 4.89% 18.77% 25.0%
Deferred Revenue
YoY Change
Short-Term Debt $0.00 $0.00 $0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities $63.80M $57.50M $47.40M
YoY Change 10.96% 24.73% 16.75%
LONG-TERM LIABILITIES
Long-Term Debt $0.00 $0.00 $0.00
YoY Change
Other Long-Term Liabilities $2.700M $2.500M $3.000M
YoY Change 8.0% 8.7% 36.36%
Total Long-Term Liabilities $2.700M $2.500M $3.000M
YoY Change 8.0% 8.7% 36.36%
TOTAL LIABILITIES
Total Short-Term Liabilities $63.80M $57.50M $47.40M
Total Long-Term Liabilities $2.700M $2.500M $3.000M
Total Liabilities $66.46M $60.00M $50.50M
YoY Change 10.77% 24.15% 17.72%
SHAREHOLDERS EQUITY
Retained Earnings $353.6M
YoY Change
Common Stock $331.1M
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost) $159.8M
YoY Change
Treasury Stock Shares $2.781M
Shareholders Equity $514.8M $468.0M $451.7M
YoY Change
Total Liabilities & Shareholders Equity $581.2M $528.0M $502.2M
YoY Change 10.08% 20.26% 20.63%

Cashflow Statement

Concept 2017 Q4 2016 Q4 2016 Q3
OPERATING ACTIVITIES
Net Income $33.50M $33.20M $30.90M
YoY Change 0.9% 35.51% 36.12%
Depreciation, Depletion And Amortization $5.200M $4.300M $4.300M
YoY Change 20.93% -6.52% -8.51%
Cash From Operating Activities $46.40M $65.70M $44.10M
YoY Change -29.38% 36.31% 23.53%
INVESTING ACTIVITIES
Capital Expenditures -$8.300M -$4.700M -$3.800M
YoY Change 76.6% 11.9% -5.0%
Acquisitions
YoY Change
Other Investing Activities $22.50M -$24.60M -$22.10M
YoY Change -191.46% -353.61% -22.46%
Cash From Investing Activities $14.20M -$29.30M -$25.90M
YoY Change -148.46% -632.73% -20.55%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities -32.80M -27.90M -9.200M
YoY Change 17.56% 92.41% -23.97%
NET CHANGE
Cash From Operating Activities 46.40M 65.70M 44.10M
Cash From Investing Activities 14.20M -29.30M -25.90M
Cash From Financing Activities -32.80M -27.90M -9.200M
Net Change In Cash 27.80M 8.500M 9.000M
YoY Change 227.06% -78.32% -200.0%
FREE CASH FLOW
Cash From Operating Activities $46.40M $65.70M $44.10M
Capital Expenditures -$8.300M -$4.700M -$3.800M
Free Cash Flow $54.70M $70.40M $47.90M
YoY Change -22.3% 34.35% 20.65%

Facts In Submission

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CY2018 us-gaap Use Of Estimates
UseOfEstimates
<p style="margin-bottom:0pt;margin-top:18pt;margin-left:2.26%;text-indent:0.24%;font-weight:bold;font-style:italic;font-size:10pt;font-family:Times New Roman;text-transform:none;font-variant: normal;">Use of Estimates </p> <p style="text-align:justify;margin-bottom:0pt;margin-top:6pt;text-indent:4.54%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. </p>
CY2018 us-gaap Prior Period Reclassification Adjustment Description
PriorPeriodReclassificationAdjustmentDescription
<p style="margin-bottom:12pt;margin-top:0pt;margin-left:4.17%;text-indent:-1.67%;font-weight:bold;font-style:italic;font-family:Times New Roman;font-size:10pt;text-transform:none;font-variant: normal;">Reclassifications</p> <p style="text-align:justify;margin-top:6pt;margin-bottom:0pt;text-indent:2.27%;font-family:Times New Roman;font-size:10pt;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Certain reclassifications have been made to the prior period&#8217;s Consolidated Financial Statements in order to conform to the current year presentation. <font style="color:#000000;">The Company revised the format of the Consolidated Statements of Operations to separately present non-operating activities. Such activities include investment income, unrealized and realized gains (losses) on trading securities, foreign exchange gains (losses), investment advisory fees and other miscellaneous non-operating activities. Accordingly, the Company reclassified these amounts from the various revenue and expense line items to Other income (expense).</font> The reclassifications had no effect on previously reported income before income taxes or net income. </p>
CY2018 dei Entity Incorporation Date Of Incorporation
EntityIncorporationDateOfIncorporation
2000-04-11
CY2018 mktx Cash Equivalents Maximum Period
CashEquivalentsMaximumPeriod
P3M
CY2018 us-gaap Other Than Temporary Impairment Losses Investments Portion Recognized In Earnings Net Availableforsale Securities
OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableforsaleSecurities
0
CY2016Q4 us-gaap Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
100000
CY2018 us-gaap Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
200000
CY2018 us-gaap Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
200000
CY2017 us-gaap Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
100000
CY2016 us-gaap Allowance For Doubtful Accounts Receivable Write Offs
AllowanceForDoubtfulAccountsReceivableWriteOffs
100000
CY2018 mktx Number Of Revenue Streams
NumberOfRevenueStreams
4
CY2018 mktx Description Of Commission Revenue
DescriptionOfCommissionRevenue
For trades that the Company executes between and among institutional investor and broker-dealer clients on a matched principal basis by serving as counterparty to both the buyer and the seller, the Company earns its commission through the difference in price between the two trades.
CY2018 mktx Settlement Period Of Bond Transaction
SettlementPeriodOfBondTransaction
Within one to two trading days
CY2018 mktx Contract With Customer Liability Payments Received
ContractWithCustomerLiabilityPaymentsReceived
18675000
CY2018 us-gaap Contract With Customer Liability Revenue Recognized
ContractWithCustomerLiabilityRevenueRecognized
18474000
CY2018 mktx Contract With Customer Liability Foreign Currency Translation
ContractWithCustomerLiabilityForeignCurrencyTranslation
51000
CY2018Q4 us-gaap Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
6300000
CY2018Q4 us-gaap Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
P18M
CY2018Q4 us-gaap Alternative Excess Net Capital
AlternativeExcessNetCapital
162800000
CY2018Q4 us-gaap Alternative Net Capital Requirement1
AlternativeNetCapitalRequirement1
15000000
CY2018Q4 mktx Money Market Funds Fair Value Disclosure
MoneyMarketFundsFairValueDisclosure
112529000
CY2018Q4 us-gaap Assets Fair Value Disclosure
AssetsFairValueDisclosure
351613000
CY2017Q4 mktx Money Market Funds Fair Value Disclosure
MoneyMarketFundsFairValueDisclosure
88562000
CY2017Q4 us-gaap Assets Fair Value Disclosure
AssetsFairValueDisclosure
327381000
CY2018 mktx Hedge Derivative Expiration Period
HedgeDerivativeExpirationPeriod
P1M
CY2018Q4 us-gaap Trading Securities Debt Amortized Cost
TradingSecuritiesDebtAmortizedCost
93574000
CY2017Q4 us-gaap Trading Securities Debt Amortized Cost
TradingSecuritiesDebtAmortizedCost
94307000
CY2018Q4 mktx Trading Securities Accumulated Gross Unrealized Gain Before Tax
TradingSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
233000
CY2017Q4 mktx Trading Securities Accumulated Gross Unrealized Gain Before Tax
TradingSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
468000
CY2018Q4 mktx Trading Securities Accumulated Gross Unrealized Loss Before Tax
TradingSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
668000
CY2017Q4 mktx Trading Securities Accumulated Gross Unrealized Loss Before Tax
TradingSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
306000
CY2018Q4 us-gaap Trading Securities Debt
TradingSecuritiesDebt
93139000
CY2017Q4 us-gaap Trading Securities Debt
TradingSecuritiesDebt
94469000
CY2018Q4 mktx Marketable Securities Amortized Cost
MarketableSecuritiesAmortizedCost
241130000
CY2017Q4 mktx Marketable Securities Amortized Cost
MarketableSecuritiesAmortizedCost
239833000
CY2018Q4 mktx Marketable Securities Accumulated Gross Unrealized Gain Before Tax
MarketableSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
260000
CY2017Q4 mktx Marketable Securities Accumulated Gross Unrealized Gain Before Tax
MarketableSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
477000
CY2018Q4 mktx Marketable Securities Accumulated Gross Unrealized Loss Before Tax
MarketableSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
1285000
CY2017Q4 mktx Marketable Securities Accumulated Gross Unrealized Loss Before Tax
MarketableSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
789000
CY2018Q4 mktx Marketable Securities Within One Year Fair Value
MarketableSecuritiesWithinOneYearFairValue
134255000
CY2017Q4 mktx Marketable Securities Within One Year Fair Value
MarketableSecuritiesWithinOneYearFairValue
130738000
CY2018Q4 mktx Marketable Securities After One Through Five Years Fair Value
MarketableSecuritiesAfterOneThroughFiveYearsFairValue
105850000
CY2017Q4 mktx Marketable Securities After One Through Five Years Fair Value
MarketableSecuritiesAfterOneThroughFiveYearsFairValue
108783000
CY2018 us-gaap Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
409300000
CY2017 us-gaap Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
219200000
CY2016 us-gaap Proceeds From Sale And Maturity Of Marketable Securities
ProceedsFromSaleAndMaturityOfMarketableSecurities
69500000
CY2018Q4 us-gaap Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
12154000
CY2018Q4 us-gaap Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
9192000
CY2017Q4 us-gaap Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
12167000
CY2017Q4 us-gaap Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
8821000
CY2017Q4 us-gaap Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
3346000
CY2018 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
400000
CY2017 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
400000
CY2016 us-gaap Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
700000
CY2018Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
400000
CY2018Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
400000
CY2018Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
400000
CY2018Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
400000
CY2018Q4 us-gaap Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
300000
CY2018Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
183639000
CY2017Q4 us-gaap Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
140012000
CY2018Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
120629000
CY2017Q4 us-gaap Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
101464000
CY2018 us-gaap Capitalized Computer Software Additions
CapitalizedComputerSoftwareAdditions
11700000
CY2017 us-gaap Capitalized Computer Software Additions
CapitalizedComputerSoftwareAdditions
13500000
CY2018 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
31617000
CY2017 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
36045000
CY2016 us-gaap Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
45455000
CY2018 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
5928000
CY2017 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
3848000
CY2016 us-gaap Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
7087000
CY2018 us-gaap Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
8862000
CY2017 us-gaap Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
7234000
CY2016 us-gaap Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
6166000
CY2018 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
46407000
CY2017 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
47127000
CY2016 us-gaap Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
58708000
CY2018 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
-1416000
CY2017 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
6171000
CY2016 us-gaap Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
5884000
CY2018 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
-272000
CY2017 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
661000
CY2016 us-gaap Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
1141000
CY2018 us-gaap Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
515000
CY2017 us-gaap Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
-280000
CY2016 us-gaap Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
-303000
CY2018 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
-1173000
CY2017 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
6552000
CY2016 us-gaap Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
6722000
CY2018 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
168500000
CY2017 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
165200000
CY2016 us-gaap Income Loss From Continuing Operations Before Income Taxes Domestic
IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
161900000
CY2017 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.35
CY2018 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.21
CY2018 mktx Tax Cuts And Jobs Act Of2017 Incomplete Accounting Provisional Income Tax Expense Benefit
TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit
11700000
CY2018 mktx Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Assets Provisional Income Tax Benefit
TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetsProvisionalIncomeTaxBenefit
6700000
CY2018 mktx Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax For Accumulated Foreign Earnings Provisional Tax Benefit
TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxForAccumulatedForeignEarningsProvisionalTaxBenefit
5000000
CY2018 mktx Tax Cuts And Jobs Act Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit
TaxCutsAndJobsActIncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit
400000
CY2016 us-gaap Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
0.350
CY2018 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.020
CY2017 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.015
CY2016 us-gaap Effective Income Tax Rate Reconciliation State And Local Income Taxes
EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
0.029
CY2018 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.003
CY2017 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.012
CY2016 us-gaap Effective Income Tax Rate Reconciliation Tax Credits Research
EffectiveIncomeTaxRateReconciliationTaxCreditsResearch
0.013
CY2018 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
-0.005
CY2017 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
-0.029
CY2016 us-gaap Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential
EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
-0.023
CY2018 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
0.021
CY2017 us-gaap Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost
EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost
0.116
CY2018 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
-0.002
CY2017 us-gaap Effective Income Tax Rate Reconciliation Change In Enacted Tax Rate
EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate
0.058
CY2018 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
-0.008
CY2016 us-gaap Effective Income Tax Rate Reconciliation Other Adjustments
EffectiveIncomeTaxRateReconciliationOtherAdjustments
0.002
CY2018 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.207
CY2017 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.266
CY2016 us-gaap Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
0.341
CY2017Q4 us-gaap Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
4648000
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
4967000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
4534000
CY2018Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Other
DeferredTaxAssetsTaxDeferredExpenseOther
2966000
CY2017Q4 us-gaap Deferred Tax Assets Tax Deferred Expense Other
DeferredTaxAssetsTaxDeferredExpenseOther
1143000
CY2018Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
8536000
CY2017Q4 us-gaap Deferred Tax Assets Gross
DeferredTaxAssetsGross
11197000
CY2017Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
4648000
CY2018Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
8536000
CY2017Q4 us-gaap Deferred Tax Assets Net
DeferredTaxAssetsNet
6549000
CY2018Q4 mktx Deferred Tax Liabilities Depreciation And Amortization
DeferredTaxLiabilitiesDepreciationAndAmortization
1847000
CY2017Q4 mktx Deferred Tax Liabilities Depreciation And Amortization
DeferredTaxLiabilitiesDepreciationAndAmortization
1369000
CY2018Q4 us-gaap Deferred Tax Liabilities Deferred Expense Capitalized Software
DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware
3776000
CY2017Q4 us-gaap Deferred Tax Liabilities Deferred Expense Capitalized Software
DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware
3479000
CY2018Q4 us-gaap Deferred Tax Liabilities Goodwill And Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
898000
CY2017Q4 us-gaap Deferred Tax Liabilities Goodwill And Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssets
967000
CY2018Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
2015000
CY2017Q4 us-gaap Deferred Tax Assets Liabilities Net
DeferredTaxAssetsLiabilitiesNet
734000
CY2018 mktx Additional Annual Limitations
AdditionalAnnualLimitations
50% or greater change
CY2018Q4 mktx Percentage Of Change In Ownership
PercentageOfChangeInOwnership
0.50
CY2018 mktx Additional Annual Limitations Period
AdditionalAnnualLimitationsPeriod
P3Y
CY2018Q4 mktx Capital Loss Carryforward Amount
CapitalLossCarryforwardAmount
20600000
CY2018 mktx Capital Loss Carryback During Current Period
CapitalLossCarrybackDuringCurrentPeriod
1200000
CY2016Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
7235000
CY2015Q4 us-gaap Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
7294000
CY2018 us-gaap Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
-4648000
CY2017 mktx Change In Valuation Allowance For Federal And State Tax Rate
ChangeInValuationAllowanceForFederalAndStateTaxRate
-2587000
CY2016 mktx Change In Valuation Allowance For Federal And State Tax Rate
ChangeInValuationAllowanceForFederalAndStateTaxRate
-59000
CY2017Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
2650000
CY2018 mktx Unrecognized Tax Benefits Increases Resulting From State And Local Apportionment
UnrecognizedTaxBenefitsIncreasesResultingFromStateAndLocalApportionment
2068000
CY2016Q4 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.26
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant
ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
304965
CY2016Q3 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.26
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
56.11
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
40.08
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
32.24
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y
CY2018Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
4718000
CY2016Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
29000
CY2017 mktx Unrecognized Tax Benefits Increases Resulting From State And Local Apportionment
UnrecognizedTaxBenefitsIncreasesResultingFromStateAndLocalApportionment
2650000
CY2017 us-gaap Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
29000
CY2015Q4 us-gaap Unrecognized Tax Benefits
UnrecognizedTaxBenefits
265000
CY2016 us-gaap Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
236000
CY2018 us-gaap Common Stock Voting Rights
CommonStockVotingRights
One
CY2018Q1 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.42
CY2018Q2 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.42
CY2018Q3 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.42
CY2018Q4 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.42
CY2017Q1 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.33
CY2017Q2 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.33
CY2017Q3 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.33
CY2017Q4 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.33
CY2016Q1 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.26
CY2016Q2 us-gaap Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
0.26
CY2017 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P5Y
CY2016 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1
P6Y
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
0.022
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
0.019
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
0.019
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
0.269
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
0.280
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
0.330
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.008
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.008
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate
ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
0.010
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
939036
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
112988
CY2016 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
874
CY2016 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
195410
CY2016Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
855740
CY2017 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
54838
CY2017 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
380967
CY2017Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
529611
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
168217
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
1676
CY2018 us-gaap Stock Issued During Period Shares Stock Options Exercised
StockIssuedDuringPeriodSharesStockOptionsExercised
120588
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
575564
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber
203564
CY2015Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
23.83
CY2016 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
102.40
CY2016 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
101.77
CY2016 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
12.35
CY2016Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
36.80
CY2017 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
156.85
CY2017 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
11.26
CY2017Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
67.60
CY2018 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
261.19
CY2018 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice
142.69
CY2018 us-gaap Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price
ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice
24.66
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
132.93
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice
53.49
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
P3Y2M12D
CY2018 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1
P2Y1M6D
CY2018 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
21823000
CY2018Q4 us-gaap Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value
ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
53651000
CY2018Q4 us-gaap Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
32126000
CY2018Q4 mktx Closing Price Of Common Stock
ClosingPriceOfCommonStock
211.31
CY2018Q4 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
8600000
CY2018 us-gaap Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1
EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
P2Y9M18D
CY2018 mktx Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Performance Shares Payout Range Minimum
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceSharesPayoutRangeMinimum
0.00
CY2018 mktx Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Performance Shares Payout Range Maximum
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceSharesPayoutRangeMaximum
1.50
CY2018 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
897000
CY2017 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
1174000
CY2016 us-gaap Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
894000
CY2015Q4 us-gaap Line Of Credit Facility Current Borrowing Capacity
LineOfCreditFacilityCurrentBorrowingCapacity
100000000
CY2018Q4 us-gaap Line Of Credit
LineOfCredit
1700000
CY2015Q4 mktx Line Of Credit Facility Additional Borrowing Capacity
LineOfCreditFacilityAdditionalBorrowingCapacity
50000000
CY2018Q4 us-gaap Line Of Credit Facility Remaining Borrowing Capacity
LineOfCreditFacilityRemainingBorrowingCapacity
98300000
CY2015Q4 us-gaap Line Of Credit Facility Expiration Period
LineOfCreditFacilityExpirationPeriod
P2Y
CY2018 mktx Percentage Of Foreign Subsidiary Interest Pledged
PercentageOfForeignSubsidiaryInterestPledged
0.65
CY2018 mktx Operating Leases Expiration Date
OperatingLeasesExpirationDate
2034-12-31
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
9764000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
10919000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
10114000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
9067000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
8738000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
95467000
CY2018Q4 us-gaap Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
144069000
CY2018 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
13100000
CY2017 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
5300000
CY2016 us-gaap Operating Leases Rent Expense Net
OperatingLeasesRentExpenseNet
4000000
CY2018Q4 mktx Operating Leases Accumulated Rent Abatements And Concessions
OperatingLeasesAccumulatedRentAbatementsAndConcessions
11500000
CY2017Q4 mktx Operating Leases Accumulated Rent Abatements And Concessions
OperatingLeasesAccumulatedRentAbatementsAndConcessions
2700000
CY2018Q4 mktx Number Of Lease Agreements
NumberOfLeaseAgreements
2
CY2018Q4 us-gaap Contractual Obligation
ContractualObligation
5800000
CY2018 mktx Number Of Subsidiaries
NumberOfSubsidiaries
2
CY2018Q4 us-gaap Deposits Assets
DepositsAssets
1100000
CY2017Q4 us-gaap Deposits Assets
DepositsAssets
1200000
CY2018 us-gaap Number Of Operating Segments
NumberOfOperatingSegments
1
CY2018 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
2600000
CY2017 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
1800000
CY2016 us-gaap Defined Contribution Plan Employer Discretionary Contribution Amount
DefinedContributionPlanEmployerDiscretionaryContributionAmount
1900000
CY2018 mktx Non Qualified Deferred Cash Incentive Plan Maximum Eligibility Percentage Of Employees
NonQualifiedDeferredCashIncentivePlanMaximumEligibilityPercentageOfEmployees
1.00
CY2018Q4 mktx Mutual Fund Investments And Deferred Compensation Obligation At Fair Value
MutualFundInvestmentsAndDeferredCompensationObligationAtFairValue
4100000
CY2017Q4 mktx Mutual Fund Investments And Deferred Compensation Obligation At Fair Value
MutualFundInvestmentsAndDeferredCompensationObligationAtFairValue
3200000
CY2018 mktx Deferred Compensation Arrangement Trading Gains Losses And Changes In Liability And Expense
DeferredCompensationArrangementTradingGainsLossesAndChangesInLiabilityAndExpense
-200000
CY2017 mktx Deferred Compensation Arrangement Trading Gains Losses And Changes In Liability And Expense
DeferredCompensationArrangementTradingGainsLossesAndChangesInLiabilityAndExpense
400000
CY2016 mktx Deferred Compensation Arrangement Trading Gains Losses And Changes In Liability And Expense
DeferredCompensationArrangementTradingGainsLossesAndChangesInLiabilityAndExpense
200000

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