Mainstream Capital Management LLC
Sector Allocation
- Other33.8%$57.4M
- Technology31.6%$53.7M
- Financials15.0%$25.5M
- Consumer Discretionary9.5%$16.1M
- Industrials2.3%$3.9M
- Consumer Staples2.0%$3.5M
- Healthcare1.8%$3.1M
- Materials1.6%$2.7M
- Communication Services1.1%$1.9M
- Energy0.6%$998,864
AUM History
13fpro.ai/research/fund/mainstream-capital-management-llc-2043084
Conviction and streaks
Diversifying · top 10 = 44.1%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q3 2026
- JPMORGAN$16.9M
AAPL
$11.2MGS
$9.6MAMZN
$7.7MNVDA
$7.0MGOOG
$6.6MMETA
$5.5MCRWD
$3.7MMSFT
$3.6M- ISHARES$3.1M
PANW
$3.0MGOOGL
$3.0M- ISHARES$2.9M
JPM
$2.8MBRK.B
$2.7MLLY
$2.6MGLW
$2.4MAMD
$2.4MSPY
$2.3M- ISHARES$2.3M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/mainstream-capital-management-llc-2043084
Mainstream Capital Management LLC 13F holdings — Q3 2026
$169.9M portfolio (+2.3% QoQ) · 302 holdings · Q3 2026 13F · top 10 are 44% of the stock portfolio
- 1
JPMORGAN ULTRA-SHORT INCOME ETF - ETF
$16.9M
10.0% of stocks
-16%This quarter—Since filed—HeldAIQuality—Est. buy— $11.2M
6.6% of stocks
-1%This quarter-1.1%Since filed8+ qtrsHeld$9.6M
5.6% of stocks
+1%This quarter+2.0%Since filed8+ qtrsHeld$7.7M
4.5% of stocks
-0.7%This quarter+0.4%Since filed8+ qtrsHeld$7.0M
4.1% of stocks
+11%This quarter+2.4%Since filed8+ qtrsHeld$6.6M
3.9% of stocks
-4%This quarter-1.0%Since filed8+ qtrsHeld$5.5M
3.2% of stocks
+0.7%This quarter-1.9%Since filed8+ qtrsHeld$3.7M
2.2% of stocks
+306%This quarter+1.6%Since filed8+ qtrsHeld$3.6M
2.1% of stocks
+31%This quarter+1.5%Since filed8+ qtrsHeld- 10
ISHARES CORE S&P 500 ETF - ETF
$3.1M
1.8% of stocks
-7%This quarter—Since filed—HeldAIQuality—Est. buy—
All holdings — Mainstream Capital Management LLC (Q3 2026)
302 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | Palo Alto Networks Inc | Technology | $3.0M | 1.8% | 7,570 | -2% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | Alphabet Inc. | Technology | $3.0M | 1.8% | 8,712 | -1% | 8+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | — | ISHARES RUSSELL 1000 GROWTH ETF - ETFetf/fund | — | $2.9M | 1.7% | 23K | -33% | — | — | 13F |
| 14 | JPMORGAN CHASE & CO | Financials | $2.8M | 1.7% | 8,515 | -3% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | BERKSHIRE HATHAWAY INC | Financials | $2.7M | 1.6% | 5,386 | -0.3% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | ELI LILLY & Co | Healthcare | $2.6M | 1.6% | 2,278 | +1% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | CORNING INC /NY | Materials | $2.4M | 1.4% | 16K | +9% | 4 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | ADVANCED MICRO DEVICES INC | Technology | $2.4M | 1.4% | 3,900 | -3% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | SPDR S&P 500 ETF TRUSTetf/fund | — | $2.3M | 1.3% | 2,989 | -14% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | — | ISHARES RUSSELL 1000 VALUE ETF - ETFetf/fund | — | $2.3M | 1.3% | 9,119 | -38% | — | — | 13F |
| 21 | — | ISHARES MSCI USA QUALITY FACTOR ETF - ETFetf/fund | — | $2.3M | 1.3% | 10K | +24% | — | — | 13F |
| 22 | COSTCO WHOLESALE CORP /NEW | Consumer Staples | $2.1M | 1.3% | 2,347 | +1% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | Tesla, Inc. | Consumer Discretionary | $2.1M | 1.2% | 5,947 | -0.6% | 8+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | — | COLUMBIA CORE PLUS BOND ETF - ETFnote | — | $2.1M | 1.2% | 110K | New | — | — | 13F |
| 25 | Interactive Brokers Group, Inc. | Financials | $1.9M | 1.1% | 23K | +4% | 7 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | — | ISHARES MSCI EAFE VALUE ETF - ETF | — | $1.8M | 1.1% | 23K | +24% | |||
| 27 | $GLD | SPDR GOLD TRUST | Financials | $1.7M | 1.0% | 4,582 | -18% | |||
| 28 | — | ISHARES S&P 500 GROWTH ETF - ETF | — | $1.7M | 1.0% | 12K | +74% | |||
| 29 | $TJX | TJX COMPANIES INC /DE/ | Consumer Discretionary | $1.7M | 1.0% | 13K | +2% | |||
| 30 | $GS | GOLDMAN SACHS GROUP INC | Financials | $1.7M | 1.0% | 1,851 | -2% | |||
| 31 | $NFLX | NETFLIX INC | Communication Services | $1.6M | 1.0% | 23K | +2% | |||
| 32 | $GEV | GE Vernova Inc. | Industrials | $1.6M | 0.9% | 1,705 | +5% | |||
| 33 | $TOST | Toast, Inc. | Technology | $1.5M | 0.9% | 53K | -7% | |||
| 34 | $ETN | Eaton Corp plc | Industrials | $1.5M | 0.9% | 3,544 | +2% | |||
| 35 | — | ISHARES CORE MSCI EMERGING MARKETS ETF - ETF | — | $1.5M | 0.9% | 18K | +55% | |||
| 36 | $SCHW | SCHWAB CHARLES CORP | Financials | $1.4M | 0.8% | 15K | -7% | |||
| 37 | — | VANGUARD INFORMATION TECHNOLOGY ETF - ETF | — | $1.4M | 0.8% | 11K | -29% | |||
| 38 | $IBM | INTERNATIONAL BUSINESS MACHINES CORP | Technology | $1.4M | 0.8% | 6,528 | -2% | |||
| 39 | — | ISHARES U.S. EQUITY FACTOR ROTATION ACTIVE ETF - ETF | — | $1.3M | 0.8% | 18K | +219% | |||
| 40 | — | VANGUARD MORNINGSTAR MID-CAP GROWTH ETF - ETF | — | $1.3M | 0.7% | 4,315 | -25% | |||
| 41 | — | VANGUARD MORNINGSTAR MID-CAP VALUE ETF - ETF | — | $1.2M | 0.7% | 6,334 | -30% | |||
| 42 | $WMT | Walmart Inc. | Consumer Staples | $1.2M | 0.7% | 12K | -10% | |||
| 43 | $CAVA | CAVA GROUP, INC. | Consumer Discretionary | $1.2M | 0.7% | 22K | +1% | |||
| 44 | $ORLY | O REILLY AUTOMOTIVE INC | Consumer Discretionary | $1.1M | 0.7% | 13K | +6% | |||
| 45 | $V | VISA INC. | Financials | $1.1M | 0.7% | 3,140 | -2% | |||
| 46 | $LZ | LEGALZOOM.COM, INC. | Technology | $1.1M | 0.7% | 200K | — | |||
| 47 | — | ISHARES S&P 500 VALUE ETF - ETF | — | $1.0M | 0.6% | 4,483 | +290% | |||
| 48 | $AVGO | Broadcom Inc. | Technology | $977K | 0.6% | 2,781 | -2% | |||
| 49 | — | ISHARES MSCI EAFE GROWTH ETF - ETF | — | $949K | 0.6% | 7,916 | -19% | |||
| 50 | — | ISHARES U.S. TECHNOLOGY ETF - ETF | — | $943K | 0.6% | 3,558 | -21% | |||
| 51 | $CEG | Constellation Energy Corp | Utilities | $935K | 0.6% | 3,682 | +18% | |||
| 52 | $CVX | CHEVRON CORP | Energy | $904K | 0.5% | 4,425 | -13% | |||
| 53 | $AMAT | APPLIED MATERIALS INC /DE | Technology | $749K | 0.4% | 1,464 | -0.3% | |||
| 54 | — | ISHARES S&P 100 ETF - ETF | — | $734K | 0.4% | 1,922 | New | |||
| 55 | $AS | Amer Sports, Inc. | Consumer Discretionary | $720K | 0.4% | 26K | +13% | |||
| 56 | — | STATE STREET TECHNOLOGY SELECT SECTOR SPDR ETF - ETF | — | $715K | 0.4% | 3,652 | -6% | |||
| 57 | $PLTR | Palantir Technologies Inc. | Technology | $541K | 0.3% | 2,893 | +50% | |||
| 58 | $MA | Mastercard Inc | Financials | $540K | 0.3% | 979 | -4% | |||
| 59 | — | JPMORGAN EQUITY PREMIUM INCOME ETF - ETF | — | $535K | 0.3% | 9,511 | -13% | |||
| 60 | $CMG | CHIPOTLE MEXICAN GRILL INC | Consumer Discretionary | $493K | 0.3% | 15K | -15% | |||
| 61 | $BA | BOEING CO | Industrials | $477K | 0.3% | 2,565 | +32% | |||
| 62 | — | RECKONER YIELD ENHANCED AAA CLO ETF - ETF | — | $461K | 0.3% | 18K | New | |||
| 63 | — | SCHWAB SHORT-TERM US TREASURY ETF - ETF | — | $438K | 0.3% | 18K | — | |||
| 64 | — | VANGUARD FINANCIALS ETF - ETF | — | $429K | 0.3% | 3,300 | -18% | |||
| 65 | — | ISHARES U.S. THEMATIC ROTATION ACTIVE ETF - ETF | — | $411K | 0.2% | 9,352 | New | |||
| 66 | $IBIT | iShares Bitcoin Trust ETF | Financials | $407K | 0.2% | 8,590 | -10% | |||
| 67 | — | ISHARES A.I. INNOVATION AND TECH ACTIVE ETF - ETF | — | $405K | 0.2% | 8,573 | New | |||
| 68 | $META | Meta Platforms, Inc. | Technology | $387K | 0.2% | 5,071 | -4% | |||
| 69 | — | VANGUARD COMMUNICATION SERVICES ETF - ETF | — | $365K | 0.2% | 1,914 | -42% | |||
| 70 | — | STATE STREET SPDR BLOOMBERG EMERGING MARKETS LOCAL BOND ETF - ETF | — | $363K | 0.2% | 18K | New | |||
| 71 | — | SCHWAB ULTRA-SHORT INCOME ETF - ETF | — | $363K | 0.2% | 14K | — | |||
| 72 | $AXP | AMERICAN EXPRESS CO | Financials | $351K | 0.2% | 1,154 | -8% | |||
| 73 | — | STATE STREET INDUSTRIAL SELECT SECTOR SPDR ETF - ETF | — | $348K | 0.2% | 2,086 | -1% | |||
| 74 | — | ISHARES MSCI USA MIN VOL FACTOR ETF - ETF | — | $336K | 0.2% | 3,449 | -39% | |||
| 75 | $RIOT | Riot Platforms, Inc. | Financials | $336K | 0.2% | 17K | — | |||
| 76 | — | STATE STREET SPDR S&P DIVIDEND ETF - ETF | — | $335K | 0.2% | 2,286 | -4% | |||
| 77 | — | ISHARES MSCI USA MOMENTUM FACTOR ETF - ETF | — | $331K | 0.2% | 1,043 | New | |||
| 78 | — | VANGUARD HEALTH CARE ETF - ETF | — | $330K | 0.2% | 1,044 | -35% | |||
| 79 | $ATI | ATI INC | Materials | $322K | 0.2% | 1,700 | — | |||
| 80 | — | ISHARES CORE S&P MID-CAP ETF - ETF | — | $313K | 0.2% | 4,357 | -23% | |||
| 81 | $QQQ | INVESCO QQQ TRUST, SERIES 1 | — | $313K | 0.2% | 423 | — | |||
| 82 | $DRI | DARDEN RESTAURANTS INC | Consumer Discretionary | $291K | 0.2% | 1,507 | — | |||
| 83 | $BABA | Alibaba Group Holding Ltd | Consumer Discretionary | $263K | 0.1% | 2,445 | -72% | |||
| 84 | — | ISHARES MSCI SOUTH KOREA ETF - ETF | — | $261K | 0.1% | 1,429 | -40% | |||
| 85 | — | STATE STREET CONSUMER STAPLES SELECT SECTOR SPDR ETF - ETF | — | $259K | 0.1% | 3,213 | — | |||
| 86 | $SBUX | STARBUCKS CORP | Consumer Discretionary | $257K | 0.1% | 2,734 | -12% | |||
| 87 | — | ISHARES U.S. INFRASTRUCTURE ETF - ETF | — | $248K | 0.1% | 4,498 | -29% | |||
| 88 | $CSCO | CISCO SYSTEMS, INC. | Technology | $241K | 0.1% | 2,237 | — | |||
| 89 | $ETHA | iShares Ethereum Trust ETF | Financials | $238K | 0.1% | 12K | -8% | |||
| 90 | — | ISHARES MSCI EMERGING MARKETS EX CHINA ETF - ETF | — | $232K | 0.1% | 2,338 | -10% | |||
| 91 | $GBTC | Grayscale Bitcoin Trust ETF | Financials | $227K | 0.1% | 3,518 | New | |||
| 92 | — | SCHWAB US DIVIDEND EQUITY ETF - ETF | — | $216K | 0.1% | 6,649 | — | |||
| 93 | — | SCHWAB FUNDAMENTAL U.S. LARGE COMPANY ETF - ETF | — | $209K | 0.1% | 6,645 | -0.3% | |||
| 94 | — | ISHARES U.S. AEROSPACE & DEFENSE ETF - ETF | — | $208K | 0.1% | 1,005 | New | |||
| 95 | $MCD | MCDONALDS CORP | Consumer Discretionary | $206K | 0.1% | 893 | -25% | |||
| 96 | — | ISHARES GLOBAL TECH ETF - ETF | — | $174K | 0.1% | 1,175 | New | |||
| 97 | — | STATE STREET CONSUMER DISCRETIONARY SELECT SECTOR SPDR ETF - ETF | — | $172K | 0.1% | 1,584 | New | |||
| 98 | $DIS | Walt Disney Co | Communication Services | $170K | 0.1% | 1,618 | New | |||
| 99 | — | ARK INNOVATION ETF - ETF | — | $156K | 0.1% | 1,750 | New | |||
| 100 | — | ISHARES BIOTECHNOLOGY ETF - ETF | — | $140K | 0.1% | 665 | -38% | |||
| 101 | — | VANGUARD S&P 500 ETF - ETF | — | $135K | 0.1% | 192 | New | |||
| 102 | $JNJ | JOHNSON & JOHNSON | Healthcare | $122K | 0.1% | 460 | New | |||
| 103 | — | RJ EAGLE MUNICIPAL INCOME ETF - ETF | — | $122K | 0.1% | 5,088 | New | |||
| 104 | — | STATE STREET ENERGY SELECT SECTOR SPDR ETF - ETF | — | $118K | 0.1% | 1,924 | New | |||
| 105 | — | VANGUARD FTSE DEVELOPED MARKETS ETF - ETF | — | $110K | 0.1% | 1,563 | New | |||
| 106 | $BE | Bloom Energy Corp | Technology | $105K | 0.1% | 380 | New | |||
| 107 | — | ISHARES U.S. ENERGY ETF - ETF | — | $101K | 0.1% | 1,551 | New | |||
| 108 | $CPAY | CORPAY, INC. | Financials | $100K | 0.1% | 257 | New | |||
| 109 | — | VANGUARD DIVIDEND APPRECIATION ETF - ETF | — | $98K | 0.1% | 418 | New | |||
| 110 | — | STATE STREET FINANCIAL SELECT SECTOR SPDR ETF - ETF | — | $96K | 0.1% | 1,790 | New | |||
| 111 | $PINS | PINTEREST, INC. | Technology | $94K | 0.1% | 5,000 | New | |||
| 112 | — | ISHARES CORE MSCI EAFE ETF - ETF | — | $89K | 0.1% | 917 | New | |||
| 113 | — | VANGUARD FTSE EMERGING MARKETS ETF - ETF | — | $86K | 0.1% | 1,451 | New | |||
| 114 | $PFE | PFIZER INC | Healthcare | $85K | 0.1% | 2,964 | New | |||
| 115 | $SHAK | Shake Shack Inc. | Consumer Discretionary | $82K | 0.1% | 1,389 | New | |||
| 116 | — | ISHARES SHORT MATURITY MUNICIPAL BOND ACTIVE ETF - ETF | — | $80K | 0.1% | 1,603 | New | |||
| 117 | $CBRE | CBRE GROUP, INC. | Real Estate | $78K | 0.1% | 610 | New | |||
| 118 | $ABBV | AbbVie Inc. | Healthcare | $78K | 0.1% | 299 | New | |||
| 119 | — | ISHARES S&P SMALL-CAP 600 VALUE ETF - ETF | — | $77K | 0.1% | 600 | New | |||
| 120 | — | VANGUARD REAL ESTATE ETF - ETF | — | $76K | 0.0% | 851 | New | |||
| 121 | $IVZ | Invesco Ltd. | Financials | $72K | 0.0% | 1,100 | New | |||
| 122 | $ORCL | ORACLE CORP | Technology | $69K | 0.0% | 505 | New | |||
| 123 | $ALL | ALLSTATE CORP | Financials | $67K | 0.0% | 300 | New | |||
| 124 | — | ISHARES S&P MID-CAP 400 GROWTH ETF - ETF | — | $66K | 0.0% | 600 | New | |||
| 125 | — | ISHARES S&P SMALL-CAP 600 GROWTH ETF - ETF | — | $64K | 0.0% | 400 | New | |||
| 126 | — | ISHARES RUSSELL 2000 ETF - ETF | — | $62K | 0.0% | 223 | New | |||
| 127 | — | BITMINE IMMERSION TECHS INC COM NEW - Stock | — | $62K | 0.0% | 2,339 | New | |||
| 128 | — | VANGUARD HIGH DIVIDEND YIELD INDEX ETF - ETF | — | $61K | 0.0% | 395 | New | |||
| 129 | $TGT | TARGET CORP | Consumer Staples | $61K | 0.0% | 391 | New | |||
| 130 | — | STATE STREET SPDR PORTFOLIO S&P 500 GROWTH ETF - ETF | — | $60K | 0.0% | 488 | New | |||
| 131 | — | JPMORGAN ULTRA-SHORT MUNICIPAL INCOME ETF - ETF | — | $60K | 0.0% | 1,182 | New | |||
| 132 | — | VANGUARD FTSE EUROPE ETF - ETF | — | $60K | 0.0% | 688 | New | |||
| 133 | $CHRW | C. H. ROBINSON WORLDWIDE, INC. | Industrials | $59K | 0.0% | 400 | New | |||
| 134 | — | FIDELITY MSCI INFORMATION TECHNOLOGY INDEX ETF - ETF | — | $59K | 0.0% | 197 | New | |||
| 135 | $CIEN | CIENA CORP | Technology | $58K | 0.0% | 166 | New | |||
| 136 | — | ISHARES MSCI INTL QUALITY FACTOR ETF - ETF | — | $58K | 0.0% | 1,163 | New | |||
| 137 | $CMI | CUMMINS INC | Industrials | $56K | 0.0% | 108 | New | |||
| 138 | $QCOM | QUALCOMM INC/DE | Technology | $56K | 0.0% | 302 | New | |||
| 139 | $SRRK | Scholar Rock Holding Corp | Healthcare | $52K | 0.0% | 1,086 | New | |||
| 140 | $T | AT&T INC. | Communication Services | $52K | 0.0% | 2,140 | New | |||
| 141 | $SIBN | SI-BONE, Inc. | Healthcare | $52K | 0.0% | 2,761 | New | |||
| 142 | — | ISHARES RUSSELL 1000 ETF - ETF | — | $50K | 0.0% | 121 | New | |||
| 143 | — | VANGUARD SHORT-TERM TREASURY ETF - ETF | — | $47K | 0.0% | 814 | New | |||
| 144 | — | ISHARES RUSSELL MIDCAP ETF - ETF | — | $47K | 0.0% | 437 | New | |||
| 145 | — | PIMCO RAFI DYNAMIC MULTI-FACTOR INTERNATIONAL EQUITY ETF - ETF | — | $45K | 0.0% | 1,086 | New | |||
| 146 | $CB | Chubb Ltd | Financials | $44K | 0.0% | 134 | New | |||
| 147 | $KO | COCA COLA CO | Consumer Staples | $43K | 0.0% | 503 | New | |||
| 148 | $PSX | Phillips 66 | Energy | $43K | 0.0% | 168 | New | |||
| 149 | — | VANGUARD MORNINGSTAR SMALL-CAP ETF - ETF | — | $42K | 0.0% | 149 | New | |||
| 150 | $AMGN | AMGEN INC | Healthcare | $42K | 0.0% | 100 | New |
What changed in Q3 2026
Against the previous quarter's 13F: 214 new, 25 added to, 53 trimmed, 2 sold out. Share-count changes; largest moves by dollar size first.
New positions (214)
- COLUMBIA CORE PLUS BOND ETF - ETF$2.1M
first bought this quarter
- ISHARES S&P 100 ETF - ETF$734K
first bought this quarter
- RECKONER YIELD ENHANCED AAA CLO ETF - ETF$461K
first bought this quarter
- ISHARES U.S. THEMATIC ROTATION ACTIVE ETF - ETF$411K
first bought this quarter
- ISHARES A.I. INNOVATION AND TECH ACTIVE ETF - ETF$405K
first bought this quarter
- STATE STREET SPDR BLOOMBERG EMERGING MARKETS LOCAL BOND ETF - ETF$363K
first bought this quarter
+208 more in the Excel export
Added to (25)
now $3.7M · held 8+ qtrs
- ISHARES U.S. EQUITY FACTOR ROTATION ACTIVE ETF - ETF+219%
now $1.3M
now $3.6M · held 8+ qtrs
- ISHARES S&P 500 VALUE ETF - ETF+290%
now $1.0M
- ISHARES S&P 500 GROWTH ETF - ETF+74%
now $1.7M
now $7.0M · held 8+ qtrs
+19 more in the Excel export
Trimmed (53)
- JPMORGAN ULTRA-SHORT INCOME ETF - ETF-16%
now $16.9M
- ISHARES RUSSELL 1000 GROWTH ETF - ETF-33%
now $2.9M
- ISHARES RUSSELL 1000 VALUE ETF - ETF-38%
now $2.3M
$DOVDOVER Corp-100%
now $4K · held 5 qtrs
$BABAAlibaba Group Holding Ltd-72%
now $263K · held 8+ qtrs
- VANGUARD INFORMATION TECHNOLOGY ETF - ETF-29%
now $1.4M
+47 more in the Excel export
Holdings by quarter
Every 13F Mainstream Capital Management LLC has filed, 8 earlier quarters. Pick one to see what it held then.
Is it too late to follow Mainstream Capital Management?
Q3 2026 13F filed with the SEC on Oct 23, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of Mainstream Capital Management's top 20 holdings: 75/100 (our AI quality score, weighted by position size; 18 of the 20 are scored)
Top 10 since filing
+0.5%
Value-weighted move of the 10 largest stock positions
Turnover
9%
Last quarter; 19% over the last 4
Top 10 weight
44%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
93%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q4 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
Mainstream Capital Management LLC disclosed 302 positions worth $169.9M in its Form 13F-HR for Q3 2026, followed by $AAPL and $GS. During the quarter the fund opened 214 new positions and exited 2 and a full exit from $UBER. The portfolio is most concentrated in Other (33.8% of disclosed assets). All figures are sourced directly from Mainstream Capital Management LLC’s Form 13F-HR filing with the SEC under CIK 2043084.
Funds like this
managers whose biggest positions overlap Mainstream Capital Management'sBrowse Top Institutional Investors
13F Pro tracks 8,700+ institutional investors filing 13F reports with the SEC.
to search all 8,700+ institutional filers.
AI-Powered Hedge Fund Analysis: Mainstream Capital Management LLC
13F Pro is an AI hedge fund tracker and stock research platform. For Mainstream Capital Management LLC (SEC CIK: 2043084), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Mainstream Capital Management LLC's portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.