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Super Investors MIDDLETON & CO INC/MA
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MIDDLETON & CO INC/MA

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$943M
Positions
163
Quarter ended
September 30, 2026
Filed
October 23, 2026

Reported portfolio value by quarter (54 quarters reported)

$1.03B $341M
Q2 13 Q1 16 Q4 18 Q3 21 Q2 24 Q3 26

$341M in Q2 2013 → $943M now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
Apple Inc 7.6% Trimmed 2.8% 214,116 $71.3M
AC Alphabet Inc Cap Stock Cl A 6.9% Trimmed 4.1% 187,785 $64.6M
Amazon.com Inc 6.2% Trimmed 2.6% 233,810 $58.3M
BC Broadcom Inc Com 4.4% Trimmed 3.0% 117,523 $41.3M
IT Ishares Tr S&P 500 Index 4.0% Added 3.2% 49,841 $38.2M
Palo Alto Networks Inc 3.6% Trimmed 5.8% 86,365 $34.3M
Microsoft Corp 3.1% Trimmed 0.5% 56,143 $28.8M
VC Visa Inc Com Cl 2.6% Trimmed 2.3% 67,834 $24.4M
Jpmorgan Chase & Co 2.3% Trimmed 3.0% 66,394 $22M
Costco Wholesale Corp 2.3% Trimmed 0.3% 23,762 $21.6M
Abbvie Inc 2.0% Trimmed 3.5% 72,606 $19M
Nvidia Corporation 1.9% Trimmed 2.1% 79,914 $18.3M
Exxonmobil Holdings Corp 1.9% New 107,476 $17.5M
O'reilly Automotive Inc 1.7% Trimmed 1.4% 192,164 $16.4M
Servicenow Inc 1.6% Trimmed 1.6% 111,337 $14.9M
LE Lilly Eli & Co 1.5% Trimmed 3.4% 12,579 $14.6M
Qualcomm Inc 1.5% Added 1.1% 78,535 $14.5M
Merck & Co Inc 1.5% Trimmed 10% 99,242 $14.4M
Danaher Corp 1.5% Trimmed 3.7% 64,130 $14.2M
Salesforce Inc 1.4% Trimmed 2.6% 57,423 $13.2M
Nextera Energy Inc 1.3% Trimmed 2.6% 164,753 $12.5M
BH Berkshire Hathaway Inc Cl B 1.3% Trimmed 3.7% 24,774 $12.3M
Eaton Corp PLC 1.2% Trimmed 2.4% 26,152 $11.2M
Equinix Inc 1.2% Trimmed 4.7% 10,906 $11M
MP Meta Platforms Inc Cl A 1.1% Trimmed 2.3% 14,150 $10.3M
VS Vanguard Short-term Treasury E 1.1% Trimmed 5.2% 175,239 $10.1M
I7 Ishares 7-10 Year Treasury Bon 1.0% Trimmed 13% 110,634 $9.88M
S&P Global Inc 1.0% Trimmed 2.5% 24,514 $9.67M
VI Vanguard Intermediate-term Gov 1.0% Trimmed 6.3% 166,554 $9.44M
SP Steris PLC Shs Usd 1.0% Trimmed 3.6% 44,863 $9.42M
IM Ishares Msci Intl Quality Fact 1.0% Trimmed 9.1% 190,318 $9.42M
Iqvia Holdings Inc 0.9% Trimmed 0.7% 32,993 $8.87M
AC Alphabet Inc Cap Stock Cl C 0.9% Trimmed 3.5% 25,254 $8.61M
Synopsys Inc 0.9% Trimmed 8.6% 18,675 $8.12M
Xylem Inc 0.8% Trimmed 2.0% 78,857 $7.99M
AT American Tower REIT 0.8% Trimmed 4.1% 46,374 $7.59M
VA Verisk Analytics Inc Cl A 0.8% Trimmed 3.7% 45,096 $7.57M
Ecolab Inc 0.8% Trimmed 4.4% 27,447 $7.54M
Waste Connections Inc 0.8% Added 12% 46,856 $7.21M
IL Idexx Labs Inc 0.7% Trimmed 1.7% 12,929 $6.75M
PA Pgim Aaa Clo ETF 0.7% Added 7.5% 128,355 $6.58M
MI Mondelez Intl Inc Cl A 0.7% Trimmed 7.9% 112,332 $6.5M
Stryker Corp 0.7% Trimmed 6.6% 22,995 $6.33M
MC Msci Inc Cl A 0.7% Trimmed 1.9% 11,667 $6.28M
AW American Wtr Wks Co Inc New 0.7% Trimmed 3.3% 48,347 $6.26M
IT Ishares Tr S&P Small Cap 600 0.7% Added 3.3% 45,189 $6.15M
IT Ishares Tr S&P Mid Cap 400 0.6% Added 1.4% 79,010 $5.68M
AC Amphenol Corp Cl A 0.6% Added 89% 65,284 $5.5M
Intuit 0.6% Trimmed 8.4% 19,927 $5.49M
Chubb Limited 0.6% Trimmed 0.1% 16,698 $5.43M
Uber Technologies Inc 0.5% Added 28% 75,475 $5.17M
LR Lam Research Corp New 0.5% Unchanged 15,213 $5M
Pepsico Inc 0.5% Trimmed 9.3% 36,537 $4.63M
Old Dominion Freight Line Inc 0.4% Trimmed 0.1% 24,363 $4.24M
Exelon Corp 0.4% Trimmed 8.4% 91,176 $3.68M
IT Ishares Tr Russell 1000 Growth 0.4% Trimmed 0.5% 28,653 $3.59M
Constellation Energy Corp 0.4% Trimmed 3.0% 13,952 $3.54M
Thermo Fisher Scientific Inc 0.4% Unchanged 5,087 $3.43M
Johnson & Johnson 0.4% Trimmed 2.6% 12,864 $3.41M
VS Vanguard Short-term Corp Bd Id 0.4% Trimmed 18% 43,176 $3.34M

Showing top 60 of 163 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 23, 2026

Company Action Shares changed Value of change % of portfolio
Exxonmobil Holdings Corp New +107,476 +$17.5M 1.9%
Exxon Mobil Corp Exited −113,821 −$15.6M —
AC Alphabet Inc Cap Stock Cl A Trimmed −8,086 −$2.78M 6.9%
AC Amphenol Corp Cl A Added +30,800 +$2.6M 0.6%
Palo Alto Networks Inc Trimmed −5,298 −$2.1M 3.6%
Apple Inc Trimmed −6,167 −$2.05M 7.6%
Netflix Inc Added +28,054 +$1.95M 0.2%
Merck & Co Inc Trimmed −11,032 −$1.6M 1.5%
Amazon.com Inc Trimmed −6,124 −$1.53M 6.2%
I7 Ishares 7-10 Year Treasury Bon Trimmed −15,967 −$1.43M 1.0%

Showing the 10 largest of 121 changes.

Q2 2026

quarter ended June 30, 2026 · filed August 10, 2026

Company Action Shares changed Value of change % of portfolio
AC Alphabet Inc Cap Stock Cl A Trimmed −11,882 −$4.25M 7.4%
Palo Alto Networks Inc Trimmed −9,601 −$3.27M 3.3%
AC Amphenol Corp Cl A Added +16,086 +$2.84M 0.6%
BC Broadcom Inc Com Trimmed −7,457 −$2.82M 4.9%
Badger Meter Inc New +18,311 +$2.72M 0.3%
IT Ishares Tr Russell 1000 Growth Added +21,522 +$2.67M 0.4%
Uber Technologies Inc Added +28,190 +$2.03M 0.5%
Adobe Inc Trimmed −7,762 −$1.59M 0.3%
Nvidia Corporation Added +7,854 +$1.57M 1.7%
Merck & Co Inc Trimmed −11,871 −$1.53M 1.5%

Showing the 10 largest of 139 changes.

Q1 2026

quarter ended March 31, 2026 · filed May 08, 2026

Company Action Shares changed Value of change % of portfolio
AC Alphabet Inc Cap Stock Cl A Trimmed −13,909 −$4M 6.8%
Merck & Co Inc Trimmed −23,208 −$2.79M 1.7%
Adobe Inc Trimmed −10,109 −$2.46M 0.5%
AC Amphenol Corp Cl A New +18,398 +$2.32M 0.3%
Fortive Corp Trimmed −37,452 −$2.07M 0.3%
IM Ishares Msci Intl Quality Fact Added +43,839 +$2.03M 1.1%
Iqvia Holdings Inc Trimmed −11,355 −$1.94M 0.7%
Uber Technologies Inc Added +23,510 +$1.69M 0.3%
VI Vanguard Intermediate-term Gov Added +25,900 +$1.54M 1.2%
Boston Scientific Corp New +23,757 +$1.49M 0.2%

Showing the 10 largest of 124 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 29, 2026

Company Action Shares changed Value of change % of portfolio
Servicenow Inc Added +79,003 +$12.1M 1.6%
Fiserv Inc Trimmed −44,515 −$2.99M 0.1%
S&P Global Inc Added +4,131 +$2.16M 1.4%
BC Broadcom Inc Com Trimmed −5,524 −$1.91M 4.8%
Fortive Corp Trimmed −34,323 −$1.89M 0.5%
Mccormick & Co Inc New +23,675 +$1.61M 0.2%
AC Alphabet Inc Cap Stock Cl A Trimmed −4,490 −$1.41M 7.4%
VI Vanguard Intermediate-term Gov Added +21,700 +$1.3M 0.9%
MB Monster Beverage Corp New Exited −18,517 −$1.25M —
Apple Inc Trimmed −4,538 −$1.23M 6.6%

Showing the 10 largest of 118 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 29, 2025

Company Action Shares changed Value of change % of portfolio
LE Lilly Eli & Co Added +11,432 +$8.72M 1.0%
Unitedhealth Group Inc Exited −26,725 −$8.34M —
IT Ishares Tr S&P 500 Index Trimmed −3,173 −$2.12M 3.4%
Eaton Corp PLC Added +5,285 +$1.98M 0.9%
AC Alphabet Inc Cap Stock Cl A Trimmed −7,261 −$1.77M 5.9%
AW American Wtr Wks Co Inc New Added +12,114 +$1.69M 0.5%
Amazon.com Inc Trimmed −6,069 −$1.33M 5.9%
RH Renaissancere Hldgs Ltd Trimmed −5,213 −$1.32M 0.2%
Adobe Inc Added +3,640 +$1.28M 1.1%
Nvidia Corporation Added +6,373 +$1.19M 1.3%

Showing the 10 largest of 121 changes.

Q2 2025

quarter ended June 30, 2025 · filed August 06, 2025

Company Action Shares changed Value of change % of portfolio
O'reilly Automotive Inc Added +196,183 +$17.7M 2.1%
Apple Inc Trimmed −16,433 −$3.37M 5.4%
Paypal Holdings Inc Exited −51,608 −$3.37M —
AW American Wtr Wks Co Inc New New +21,395 +$2.98M 0.3%
Ralliant Corp New +40,255 +$1.95M 0.2%
Eaton Corp PLC Added +5,204 +$1.86M 0.7%
BC Broadcom Inc Com Trimmed −5,929 −$1.63M 4.3%
Jpmorgan Chase & Co Trimmed −5,328 −$1.54M 2.5%
Kroger Co New +20,321 +$1.46M 0.2%
Costco Wholesale Corp Trimmed −1,288 −$1.28M 2.8%

Showing the 10 largest of 129 changes.

Q1 2025

quarter ended March 31, 2025 · filed May 09, 2025

Company Action Shares changed Value of change % of portfolio
IM Ishares Msci Intl Quality Fact New +146,727 +$5.82M 0.7%
Nvidia Corporation Added +37,642 +$4.08M 0.7%
Eaton Corp PLC Added +10,655 +$2.9M 0.4%
Starbucks Corp Trimmed −27,137 −$2.66M 0.3%
DW Disney Walt Co Disney Trimmed −18,769 −$1.85M 0.2%
Apple Inc Trimmed −8,260 −$1.83M 6.5%
VI Vanguard Intermediate-term Gov Added +29,265 +$1.74M 0.7%
Fiserv Inc Trimmed −6,693 −$1.48M 1.2%
O'reilly Automotive Inc Trimmed −1,009 −$1.45M 2.6%
VA Verisk Analytics Inc Cl A Trimmed −4,425 −$1.32M 1.5%

Showing the 10 largest of 130 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 05, 2025

Company Action Shares changed Value of change % of portfolio
Palo Alto Networks Inc Added +52,163 +$9.49M 2.1%
LE Lauder Estee Cos Inc Exited −49,024 −$4.89M —
IL Idexx Labs Inc Added +6,095 +$2.52M 0.6%
Aptiv PLC Exited −31,907 −$2.3M —
PA Pgim Aaa Clo ETF Added +39,925 +$2.04M 0.4%
I7 Ishares 7-10 Year Treasury Bon Trimmed −19,246 −$1.78M 1.4%
VI Vanguard Intermediate-term Gov Added +25,750 +$1.49M 0.5%
Lam Research Corp Exited −1,743 −$1.42M —
Danaher Corp Trimmed −5,875 −$1.35M 2.0%
Aptiv PLC New +20,642 +$1.25M 0.1%

Showing the 10 largest of 133 changes.

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