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Super Investors Mainstream Capital Management LLC
MC

Mainstream Capital Management LLC

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

Portfolio value
$170M
Positions
302
Quarter ended
September 30, 2026
Filed
October 23, 2026

Reported portfolio value by quarter (9 quarters reported)

$170M $118M
Q3 24 Q1 25 Q3 25 Q1 26 Q3 26

$118M in Q3 2024 → $170M 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
JU Jpmorgan Ultra-short Income ETF 10.0% Trimmed 16% 336,297 $16.9M
AC Apple Inc Com 6.6% Trimmed 1.3% 33,675 $11.2M
GS Goldman Sachs Ultra Short Bond ETF 5.6% Added 1.0% 189,302 $9.55M
AC Amazon Com Inc Com 4.5% Trimmed 0.7% 30,737 $7.66M
NC Nvidia Corporation Com 4.1% Added 11% 30,526 $6.97M
AC Alphabet Inc Cap Stk Cl C 3.9% Trimmed 3.5% 19,504 $6.65M
MP Meta Platforms Inc Cl A 3.2% Added 0.7% 7,555 $5.48M
CH Crowdstrike Hldgs Inc Cl A 2.2% Added 306% 14,033 $3.72M
MC Microsoft Corp Com 2.1% Added 31% 7,075 $3.63M
IC Ishares Core S&P 500 ETF 1.8% Trimmed 7.3% 4,023 $3.08M
PA Palo Alto Networks Inc Com 1.8% Trimmed 1.9% 7,570 $3.01M
AC Alphabet Inc Cap Stk Cl A 1.8% Trimmed 1.4% 8,712 $3M
IR Ishares Russell 1000 Growth ETF 1.7% Trimmed 33% 22,805 $2.86M
JC Jpmorgan Chase & Co Com 1.7% Trimmed 2.6% 8,515 $2.82M
BH Berkshire Hathaway Inc Del Cl B New 1.6% Trimmed 0.3% 5,386 $2.68M
EL Eli Lilly & Co Com 1.6% Added 1.2% 2,278 $2.64M
CC Corning Inc Com 1.4% Added 9.1% 15,593 $2.4M
AM Advanced Micro Devices Inc Com 1.4% Trimmed 3.2% 3,900 $2.39M
SS State Street SPDR S&P 500 ETF 1.3% Trimmed 14% 2,989 $2.28M
IR Ishares Russell 1000 Value ETF 1.3% Trimmed 38% 9,119 $2.26M
IM Ishares Msci Usa Quality Factor ETF 1.3% Added 24% 10,148 $2.26M
CW Costco Wholesale Corporation Com 1.3% Added 1.0% 2,347 $2.14M
TC Tesla Inc Com 1.2% Trimmed 0.6% 5,947 $2.11M
CC Columbia Core Plus Bond ETF 1.2% New 110,289 $2.07M
IB Interactive Brokers Group Inc Com Cl A 1.1% Added 4.0% 22,789 $1.95M
IM Ishares Msci Eafe Value ETF 1.1% Added 24% 23,023 $1.82M
SG SPDR Gold Shares 1.0% Trimmed 18% 4,582 $1.75M
IS Ishares S&P 500 Growth ETF 1.0% Added 74% 11,950 $1.7M
TC Tjx Cos Inc New Com 1.0% Added 2.2% 12,616 $1.67M
GS Goldman Sachs Group Inc Com 1.0% Trimmed 2.1% 1,851 $1.67M
NC Netflix Inc. Com 1.0% Added 1.5% 23,379 $1.63M
GV Ge Vernova Inc Com 1.0% Added 5.3% 1,705 $1.62M
TC Toast Inc Cl A 0.9% Trimmed 6.7% 52,988 $1.54M
EP Eaton Corp PLC Shs 0.9% Added 2.5% 3,544 $1.52M
IC Ishares Core Msci Emerging Markets ETF 0.9% Added 55% 18,214 $1.48M
CS Charles Schwab Corp (the) Com 0.9% Trimmed 7.5% 14,829 $1.45M
VI Vanguard Information Technology ETF 0.8% Trimmed 29% 11,483 $1.44M
IB International Business Machs Com 0.8% Trimmed 1.6% 6,528 $1.44M
IU Ishares U.s. Equity Factor Rotation Active ETF 0.8% Added 219% 18,405 $1.27M
VM Vanguard Morningstar Mid-cap Growth ETF 0.7% Trimmed 25% 4,315 $1.26M
VM Vanguard Morningstar Mid-cap Value ETF 0.7% Trimmed 30% 6,334 $1.24M
WC Walmart Inc Com 0.7% Trimmed 10% 11,643 $1.21M
CG Cava Group Inc Com 0.7% Added 1.1% 21,612 $1.17M
OA Oreilly Automotive Inc Com 0.7% Added 5.9% 13,301 $1.14M
VC Visa Inc Com Cl A 0.7% Trimmed 2.2% 3,140 $1.13M
LC Legalzoom Com Inc Com 0.7% Unchanged 200,000 $1.12M
IS Ishares S&P 500 Value ETF 0.6% Added 290% 4,483 $1.02M
BC Broadcom Inc Com 0.6% Trimmed 1.6% 2,781 $977K
IM Ishares Msci Eafe Growth ETF 0.6% Trimmed 19% 7,916 $949K
IU Ishares U.s. Technology ETF 0.6% Trimmed 21% 3,558 $943K
CE Constellation Energy Corp Com 0.6% Added 18% 3,682 $935K
CC Chevron Corporation Com 0.5% Trimmed 13% 4,425 $904K
AM Applied Matls Inc Com 0.4% Trimmed 0.3% 1,464 $749K
IS Ishares S&P 100 ETF 0.4% New 1,922 $734K
AS Amer Sports Inc Com Shs 0.4% Added 13% 26,390 $720K
SS State Street Technology Select Sector SPDR ETF 0.4% Trimmed 5.8% 3,652 $715K
PT Palantir Technologies Inc Cl A 0.3% Added 50% 2,893 $541K
MI Mastercard Incorporated Cl A 0.3% Trimmed 4.2% 979 $540K
JE Jpmorgan Equity Premium Income ETF 0.3% Trimmed 13% 9,511 $535K
CM Chipotle Mexican Grill Inc Com 0.3% Trimmed 15% 15,445 $493K

Showing top 60 of 302 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
JU Jpmorgan Ultra-short Income ETF Trimmed −65,933 −$3.32M 10.0%
CH Crowdstrike Hldgs Inc Cl A Added +10,575 +$2.8M 2.2%
CC Columbia Core Plus Bond ETF New +110,289 +$2.07M 1.2%
IR Ishares Russell 1000 Growth ETF Trimmed −11,460 −$1.44M 1.7%
IR Ishares Russell 1000 Value ETF Trimmed −5,479 −$1.36M 1.3%
DC Dover Corp Com Trimmed −5,666 −$1.06M —
IU Ishares U.s. Equity Factor Rotation Active ETF Added +12,637 +$875K 0.8%
MC Microsoft Corp Com Added +1,677 +$860K 2.1%
UT Uber Technologies Inc Com Exited −11,049 −$797K —
IS Ishares S&P 500 Value ETF Added +3,334 +$761K 0.6%

Showing the 10 largest of 295 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 15, 2026

Company Action Shares changed Value of change % of portfolio
IR Ishares Russell 1000 Growth ETF Added +25,574 +$3.18M 2.6%
IB International Business Machs Com New +6,637 +$1.87M 1.1%
VI Vanguard Information Technology ETF Added +14,091 +$1.68M 1.2%
HC Honest Co Inc Com Exited −236,061 −$694K —
GS Goldman Sachs Ultra Short Bond ETF Added +11,302 +$572K 5.7%
JU Jpmorgan Ultra-short Income ETF Trimmed −10,109 −$511K 12.2%
HD Home Depot Inc Com Trimmed −1,435 −$506K 0.4%
AM Advanced Micro Devices Inc Com Added +859 +$499K 1.4%
JE Jpmorgan Equity Premium Income ETF Trimmed −7,877 −$445K 0.4%
AC Apple Inc Com Trimmed −1,445 −$418K 5.9%

Showing the 10 largest of 75 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 17, 2026

Company Action Shares changed Value of change % of portfolio
GS Goldman Sachs Ultra Short Bond ETF Added +49,914 +$2.52M 6.0%
SC Salesforce Inc Com Exited −6,042 −$1.6M —
TC Toast Inc Cl A New +57,404 +$1.52M 1.0%
GV Ge Vernova Inc Com New +1,394 +$1.22M 0.8%
BC Bxp Inc Com Exited −12,418 −$838K —
JE Jpmorgan Equity Premium Income ETF Trimmed −9,799 −$555K 0.7%
GS Goldman Sachs Group Inc Com Added +390 +$330K 1.1%
AC Ati Inc Com New +1,700 +$247K 0.2%
NC Nike Inc Cl B Exited −3,859 −$246K —
GB Grayscale Bitcoin Trust ETF Exited −3,538 −$242K —

Showing the 10 largest of 75 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 21, 2026

Company Action Shares changed Value of change % of portfolio
GS Goldman Sachs Ultra Short Bond ETF Added +91,541 +$4.62M 4.2%
NC Netflix Inc Com Added +20,699 +$1.94M 1.4%
JU Jpmorgan Ultra-short Income ETF Trimmed −31,945 −$1.62M 13.6%
CC Corning Inc Com New +14,157 +$1.24M 0.8%
AC AT&T Inc Com Exited −24,988 −$706K —
IR Ishares Russell 1000 Growth ETF Trimmed −952 −$451K 2.7%
IR Ishares Russell 1000 Value ETF Trimmed −1,594 −$335K 2.1%
SS State Street Technology Select Sector SPDR ETF Added +1,938 +$279K 0.4%
PT Palantir Technologies Inc Cl A New +1,563 +$278K 0.2%
SC Starbucks Corp Com New +3,121 +$263K 0.2%

Showing the 10 largest of 81 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 20, 2025

Company Action Shares changed Value of change % of portfolio
GS Goldman Sachs Ultra Short Bond ETF New +34,620 +$1.76M 1.2%
EP Eaton Corp PLC Shs New +3,090 +$1.16M 0.8%
UT Uber Technologies Inc Com New +11,694 +$1.15M 0.8%
UG Unitedhealth Group Inc Com Exited −3,235 −$1.01M —
DC Dover Corp Com New +5,353 +$893K 0.6%
BS Blackstone Secd Lending Fd Common Stock Exited −16,459 −$506K —
IE Ishares Ethereum Trust ETF New +13,040 +$411K 0.3%
AC Apple Inc Com Trimmed −1,605 −$409K 6.1%
JU Jpmorgan Ultra-short Income ETF Added +7,768 +$394K 14.9%
JE Jpmorgan Equity Premium Income ETF Trimmed −5,348 −$305K 1.1%

Showing the 10 largest of 72 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 15, 2025

Company Action Shares changed Value of change % of portfolio
JU Jpmorgan Ultra-short Income ETF Added +47,940 +$2.43M 16.0%
OA Oreilly Automotive Inc Com Added +11,801 +$1.06M 0.8%
IC Ishares Core S&P Small Cap ETF Exited −8,212 −$859K —
IB Interactive Brokers Group Inc Com Cl A Added +14,071 +$780K 0.7%
DW Disney Walt Co Com Trimmed −4,225 −$524K 0.3%
EL Eli Lilly & Co Com Added +668 +$521K 1.3%
SS Schwab Short-term Us Treasury ETF New +20,740 +$506K 0.4%
SG SPDR Gold Shares Added +1,613 +$492K 1.6%
NC Nvidia Corporation Com Trimmed −2,789 −$441K 3.1%
SU Skechers U S A Inc Cl A Exited −6,350 −$361K —

Showing the 10 largest of 67 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 28, 2025

Company Action Shares changed Value of change % of portfolio
JU Jpmorgan Ultra-short Income ETF Trimmed −94,441 −$4.78M 15.5%
HD Home Depot Inc Com Added +4,026 +$1.48M 1.3%
EL Eli Lilly & Co Com Added +1,361 +$1.12M 1.1%
PC Pfizer Inc Com Exited −30,491 −$809K —
IB Interactive Brokers Group Inc Com Cl A New +4,301 +$712K 0.6%
SP SPDR Portfolio S&P 500 Growth ETF Exited −6,229 −$548K —
IC Ishares Core S&P Small Cap ETF Trimmed −4,959 −$519K 0.7%
SP SPDR Portfolio S&P 500 Value ETF Exited −6,294 −$322K —
SP SPDR Portfolio S&P 500 High Dividend ETF Exited −6,535 −$283K —
AS Amer Sports Inc Com Shs Added +10,072 +$269K 0.4%

Showing the 10 largest of 310 changes.

Q4 2024

quarter ended December 31, 2024 · filed February 06, 2025

Company Action Shares changed Value of change % of portfolio
JU Jpmorgan Ultra-short Income ETF Added +209,794 +$10.6M 17.0%
PA Palo Alto Networks Inc Com Added +3,418 +$622K 0.9%
AG Alibaba Group Hldg Ltd Sponsored Ads New +7,081 +$600K 0.4%
CE Constellation Energy Corp Com New +2,582 +$578K 0.4%
SC Sysco Corp Com Exited −6,604 −$516K —
GB Grayscale Bitcoin Trust ETF New +3,876 +$287K 0.2%
SU Schwab Ultra-short Income ETF New +10,350 +$260K 0.2%
IB Ishares Bitcoin Trust ETF New +4,400 +$233K 0.2%
IU Ishares U.s. Equity Factor Rotation Active ETF New +4,116 +$211K 0.1%
IQ Invesco Qqq Trust Series I New +380 +$194K 0.1%

Showing the 10 largest of 305 changes.

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