BLAIR WILLIAM & CO/IL
Sector Allocation
- Technology30.9%$11.9B
- Other17.2%$6.6B
- Financials13.3%$5.1B
- Industrials12.7%$4.9B
- Healthcare8.7%$3.3B
- Consumer Discretionary7.9%$3.0B
- Consumer Staples3.6%$1.4B
- Materials1.9%$744.8M
- Energy1.3%$509.9M
- Real Estate0.9%$343.5M
AUM History
13fpro.ai/research/fund/blair-william-and-co-il-902367
Conviction and streaks
Stable · top 10 = 26.3%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 — Q2 2026
AAPL
$1.7BAMZN
$1.4BMSFT
$1.3BNVDA
$1.1BGOOG
$1.0BGOOGL
$858.6MGEV
$775.0MJPM
$743.2MSPY
$633.3MV
$631.8MCOST
$490.8MIDXX
$483.6MAPH
$441.6MMA
$432.6MIVZ
$421.8MPANW
$418.3MLLY
$416.3MMETA
$377.9M- VANGUARD$375.1M
MU
$364.6M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/blair-william-and-co-il-902367
BLAIR WILLIAM & CO/IL 13F holdings — Q2 2026
$38.4B portfolio (+10.0% QoQ) · 1,998 holdings · Q2 2026 13F · top 10 are 26% of the stock portfolio
$1.7B
4.3% of stocks
-3%This quarter+12.8%Since filed7+ qtrsHeld$1.4B
3.6% of stocks
-3%This quarter-8.5%Since filed7+ qtrsHeld$1.3B
3.4% of stocks
-2%This quarter+5.7%Since filed7+ qtrsHeld$1.1B
2.8% of stocks
-1.0%This quarter-0.7%Since filed7+ qtrsHeld$1.0B
2.7% of stocks
-3%This quarter-8.4%Since filed7+ qtrsHeld$858.6M
2.2% of stocks
-1%This quarter-8.4%Since filed7+ qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialTrimmed 3 qtrs in a row$775.0M
2.0% of stocks
-0.7%This quarter-15.5%Since filed7+ qtrsHeld$743.2M
1.9% of stocks
-2%This quarter-7.7%Since filed7+ qtrsHeld$633.3M
1.6% of stocks
+0.3%This quarter-0.7%Since filed7+ qtrsHeld$631.8M
1.6% of stocks
-0.2%This quarter+11.4%Since filed7+ qtrsHeld
All holdings — BLAIR WILLIAM & CO/IL (Q2 2026)
1,998 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. The page lists up to 1,000; every position is in the Excel export.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | COSTCO WHOLESALE CORP /NEW | Consumer Staples | $490.8M | 1.3% | 525K | +0.7% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | IDEXX LABORATORIES INC /DE | Healthcare | $483.6M | 1.3% | 919K | -3% | 7+ qtrsTrimmed 4 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | AMPHENOL CORP /DE/ | Technology | $441.6M | 1.1% | 2.50M | -0.6% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | Mastercard Inc | Financials | $432.6M | 1.1% | 842K | -9% | 7+ qtrsTrimmed 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | Invesco Ltd. | Financials | $421.8M | 1.1% | 1.98M | +18% | 7+ qtrsAdded 6 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | Palo Alto Networks Inc | Technology | $418.3M | 1.1% | 1.23M | -6% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | ELI LILLY & Co | Healthcare | $416.3M | 1.1% | 347K | +7% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | Meta Platforms, Inc. | Technology | $377.9M | 1.0% | 671K | -7% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | — | VANGUARD INTL EQUITY INDEX F - ALLWRLD EX USetf/fund | — | $375.1M | 1.0% | 4.48M | +7% | — | — | 13F |
| 20 | MICRON TECHNOLOGY INC | Technology | $364.6M | 0.9% | 316K | -5% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | — | ISHARES TR - CORE S&P500 ETFetf/fund | — | $363.0M | 0.9% | 485K | -0.2% | — | — | 13F |
| 22 | FASTENAL CO | Industrials | $355.8M | 0.9% | 7.41M | +0.5% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | Broadcom Inc. | Technology | $351.2M | 0.9% | 930K | +1% | 7+ qtrsAdded 2 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | AbbVie Inc. | Healthcare | $324.1M | 0.8% | 1.29M | -3% | 7+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | — | VANGUARD TAX-MANAGED FDS - VAN FTSE DEV MKTetf/fund | — | $305.7M | 0.8% | 4.29M | +11% | — | — | 13F |
| 26 | $BWXT | BWX Technologies, Inc. | Industrials | $303.0M | 0.8% | 1.56M | +8% | |||
| 27 | — | VANGUARD INDEX FDS - S&P 500 ETF SHS | — | $288.0M | 0.8% | 419K | +6% | |||
| 28 | $ANET | Arista Networks, Inc. | Technology | $272.6M | 0.7% | 1.60M | +39% | |||
| 29 | — | VANGUARD INDEX FDS - VALUE ETF | — | $268.6M | 0.7% | 1.23M | +6% | |||
| 30 | $QQQ | INVESCO QQQ TRUST, SERIES 1 | — | $264.5M | 0.7% | 359K | +15% | |||
| 31 | $WMT | Walmart Inc. | Consumer Staples | $257.2M | 0.7% | 2.27M | -4% | |||
| 32 | $HD | HOME DEPOT, INC. | Consumer Discretionary | $246.0M | 0.6% | 698K | -8% | |||
| 33 | $JNJ | JOHNSON & JOHNSON | Healthcare | $242.9M | 0.6% | 956K | +0.1% | |||
| 34 | $BRK.B | BERKSHIRE HATHAWAY INC | Financials | $242.0M | 0.6% | 484K | -2% | |||
| 35 | — | EVERPURE INC - CL A | — | $240.2M | 0.6% | 3.05M | +4% | |||
| 36 | $ECL | ECOLAB INC. | Materials | $238.0M | 0.6% | 854K | -1% | |||
| 37 | $WSO | WATSCO INC | Consumer Discretionary | $235.0M | 0.6% | 564K | -3% | |||
| 38 | $AXP | AMERICAN EXPRESS CO | Financials | $230.1M | 0.6% | 680K | -2% | |||
| 39 | $PGR | PROGRESSIVE CORP/OH/ | Financials | $225.9M | 0.6% | 1.03M | -15% | |||
| 40 | $NOW | ServiceNow, Inc. | Technology | $222.4M | 0.6% | 2.24M | +24% | |||
| 41 | $TDG | TransDigm Group INC | Industrials | $219.7M | 0.6% | 165K | -0.8% | |||
| 42 | $SYK | STRYKER CORP | Healthcare | $215.5M | 0.6% | 684K | -19% | |||
| 43 | — | ISHARES TR - RUSSELL 2000 ETF | — | $210.6M | 0.6% | 701K | +12% | |||
| 44 | $CRWD | CrowdStrike Holdings, Inc. | Technology | $207.8M | 0.5% | 272K | +8% | |||
| 45 | $UBER | Uber Technologies, Inc | Technology | $201.7M | 0.5% | 2.79M | -15% | |||
| 46 | — | VANGUARD INDEX FDS - TOTAL STK MKT | — | $195.6M | 0.5% | 529K | +42% | |||
| 47 | $AAON | AAON, INC. | Industrials | $194.5M | 0.5% | 1.53M | -5% | |||
| 48 | $BA | BOEING CO | Industrials | $190.1M | 0.5% | 878K | -5% | |||
| 49 | $DHR | DANAHER CORP /DE/ | Healthcare | $185.0M | 0.5% | 971K | -25% | |||
| 50 | $CTAS | CINTAS CORP | Consumer Discretionary | $180.9M | 0.5% | 1.06M | +9% | |||
| 51 | — | VANGUARD SPECIALIZED FUNDS - DIV APP ETF | — | $170.0M | 0.4% | 719K | +4% | |||
| 52 | $PWR | QUANTA SERVICES, INC. | Industrials | $161.8M | 0.4% | 225K | -0.5% | |||
| 53 | $ISRG | INTUITIVE SURGICAL INC | Healthcare | $158.1M | 0.4% | 398K | -6% | |||
| 54 | $MRVL | Marvell Technology, Inc. | Technology | $158.0M | 0.4% | 531K | -27% | |||
| 55 | $ICE | Intercontinental Exchange, Inc. | Financials | $158.0M | 0.4% | 1.28M | -19% | |||
| 56 | $GS | GOLDMAN SACHS GROUP INC | Financials | $148.9M | 0.4% | 147K | -6% | |||
| 57 | $CW | CURTISS WRIGHT CORP | Industrials | $140.6M | 0.4% | 186K | +11% | |||
| 58 | $ROK | ROCKWELL AUTOMATION, INC | Industrials | $139.8M | 0.4% | 282K | -0.6% | |||
| 59 | $RBC | RBC Bearings INC | Industrials | $139.0M | 0.4% | 216K | -0.9% | |||
| 60 | $IBM | INTERNATIONAL BUSINESS MACHINES CORP | Technology | $136.7M | 0.4% | 486K | -6% | |||
| 61 | $AMD | ADVANCED MICRO DEVICES INC | Technology | $136.6M | 0.4% | 235K | +16% | |||
| 62 | $GLD | SPDR GOLD TRUST | Financials | $133.6M | 0.3% | 363K | -6% | |||
| 63 | $VEEV | VEEVA SYSTEMS INC | Technology | $133.3M | 0.3% | 751K | -30% | |||
| 64 | $UNP | UNION PACIFIC CORP | Industrials | $132.7M | 0.3% | 488K | -5% | |||
| 65 | — | VANGUARD INDEX FDS - GROWTH ETF | — | $131.5M | 0.3% | 1.53M | +510% | |||
| 66 | — | ISHARES TR - CORE S&P US VLU | — | $131.0M | 0.3% | 1.19M | +2% | |||
| 67 | $PG | PROCTER & GAMBLE Co | Consumer Staples | $130.2M | 0.3% | 888K | -0.7% | |||
| 68 | $CAT | CATERPILLAR INC | Industrials | $129.4M | 0.3% | 122K | +3% | |||
| 69 | $HEI | HEICO CORP | Industrials | $127.4M | 0.3% | 358K | +6% | |||
| 70 | — | ISHARES TR - RUS 1000 GRW ETF | — | $120.9M | 0.3% | 974K | +266% | |||
| 71 | $LIN | LINDE PLC | Materials | $120.6M | 0.3% | 232K | -0.4% | |||
| 72 | $CVX | CHEVRON CORP | Energy | $120.5M | 0.3% | 727K | +2% | |||
| 73 | $AON | Aon plc | Financials | $119.6M | 0.3% | 361K | -14% | |||
| 74 | $BX | Blackstone Inc. | Financials | $119.0M | 0.3% | 1.01M | -14% | |||
| 75 | $MRK | Merck & Co., Inc. | Healthcare | $118.3M | 0.3% | 921K | +2% | |||
| 76 | — | FIRST TR EXCHANGE TRADED FD - RISNG DIVD ACHIV | — | $116.0M | 0.3% | 1.43M | +62% | |||
| 77 | $LYV | Live Nation Entertainment, Inc. | Communication Services | $115.0M | 0.3% | 628K | -5% | |||
| 78 | $TSLA | Tesla, Inc. | Consumer Discretionary | $114.9M | 0.3% | 273K | -8% | |||
| 79 | $KO | COCA COLA CO | Consumer Staples | $113.5M | 0.3% | 1.40M | -1% | |||
| 80 | $DXCM | DEXCOM INC | Healthcare | $112.2M | 0.3% | 1.67M | -14% | |||
| 81 | $WM | WASTE MANAGEMENT INC | Utilities | $109.5M | 0.3% | 491K | +1% | |||
| 82 | $AME | AMETEK INC/ | Industrials | $105.5M | 0.3% | 436K | -5% | |||
| 83 | $JLL | JONES LANG LASALLE INC | Real Estate | $105.5M | 0.3% | 340K | +0.9% | |||
| 84 | — | ISHARES TR - MSCI EAFE ETF | — | $103.3M | 0.3% | 995K | +4% | |||
| 85 | $HON | HONEYWELL INTERNATIONAL INC | Industrials | $101.7M | 0.3% | 454K | +54% | |||
| 86 | $CSCO | CISCO SYSTEMS, INC. | Technology | $100.7M | 0.3% | 858K | +4% | |||
| 87 | $HONA | Honeywell Aerospace Inc. | Industrials | $100.4M | 0.3% | 454K | New | |||
| 88 | $GD | GENERAL DYNAMICS CORP | Industrials | $98.8M | 0.3% | 279K | -5% | |||
| 89 | $ORLY | O REILLY AUTOMOTIVE INC | Consumer Discretionary | $97.1M | 0.3% | 1.05M | -5% | |||
| 90 | $ITW | ILLINOIS TOOL WORKS INC | Industrials | $97.1M | 0.3% | 359K | -0.4% | |||
| 91 | $DE | DEERE & CO | Industrials | $96.9M | 0.3% | 153K | +3% | |||
| 92 | $SBUX | STARBUCKS CORP | Consumer Discretionary | $96.7M | 0.3% | 946K | +0.8% | |||
| 93 | $ABT | ABBOTT LABORATORIES | Healthcare | $96.5M | 0.3% | 1.06M | -20% | |||
| 94 | $GNRC | GENERAC HOLDINGS INC. | Technology | $95.3M | 0.3% | 325K | -6% | |||
| 95 | — | ISHARES TR - CORE S&P US GWT | — | $94.3M | 0.3% | 501K | +5% | |||
| 96 | $MCD | MCDONALDS CORP | Consumer Discretionary | $91.9M | 0.2% | 340K | -2% | |||
| 97 | $NFLX | NETFLIX INC | Communication Services | $91.8M | 0.2% | 1.29M | -27% | |||
| 98 | $TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | Technology | $91.5M | 0.2% | 192K | +39% | |||
| 99 | — | ISHARES TR - CORE S&P TTL STK | — | $91.4M | 0.2% | 557K | -4% | |||
| 100 | $GWRE | Guidewire Software, Inc. | Technology | $89.4M | 0.2% | 726K | -26% | |||
| 101 | — | SPDR SERIES TRUST - ST STR P400MID | — | $87.5M | 0.2% | 1.29M | +54% | |||
| 102 | $KLAC | KLA CORP | Technology | $87.0M | 0.2% | 288K | +799% | |||
| 103 | $QCOM | QUALCOMM INC/DE | Technology | $86.6M | 0.2% | 469K | -4% | |||
| 104 | — | ISHARES TR - RUSSELL 3000 ETF | — | $82.6M | 0.2% | 194K | -0.3% | |||
| 105 | $GE | GENERAL ELECTRIC CO | Industrials | $80.3M | 0.2% | 215K | +7% | |||
| 106 | $FANG | Diamondback Energy, Inc. | Energy | $80.3M | 0.2% | 457K | +3% | |||
| 107 | $TMO | THERMO FISHER SCIENTIFIC INC. | Healthcare | $80.2M | 0.2% | 160K | -7% | |||
| 108 | — | ISHARES TR - CORE MSCI EAFE | — | $77.9M | 0.2% | 807K | -13% | |||
| 109 | $TWLO | TWILIO INC | Technology | $77.7M | 0.2% | 376K | +65% | |||
| 110 | — | FIRST TR EXCHANGE TRADED FD - SMID RISNG ETF | — | $77.3M | 0.2% | 1.79M | +21% | |||
| 111 | $RTX | RTX Corp | Industrials | $75.9M | 0.2% | 400K | +4% | |||
| 112 | $GWW | W.W. GRAINGER, INC. | Consumer Discretionary | $74.0M | 0.2% | 54K | -0.1% | |||
| 113 | $WAB | WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORP | Industrials | $72.5M | 0.2% | 269K | -5% | |||
| 114 | $PEP | PEPSICO INC | Consumer Staples | $72.3M | 0.2% | 534K | -2% | |||
| 115 | $ULS | UL Solutions Inc. | Technology | $70.7M | 0.2% | 694K | -4% | |||
| 116 | $MDB | MongoDB, Inc. | Technology | $70.0M | 0.2% | 208K | -23% | |||
| 117 | $AMT | AMERICAN TOWER CORP /MA/ | Real Estate | $68.9M | 0.2% | 421K | -10% | |||
| 118 | $BAC | BANK OF AMERICA CORP /DE/ | Financials | $68.6M | 0.2% | 1.20M | +16% | |||
| 119 | $SCHW | SCHWAB CHARLES CORP | Financials | $68.2M | 0.2% | 739K | -17% | |||
| 120 | $AXON | AXON ENTERPRISE, INC. | Industrials | $67.4M | 0.2% | 120K | +14% | |||
| 121 | $GLW | CORNING INC /NY | Materials | $65.8M | 0.2% | 258K | -12% | |||
| 122 | $MIAX | MIAMI INTERNATIONAL HOLDINGS, INC. | Financials | $65.8M | 0.2% | 1.77M | +166% | |||
| 123 | $DOCN | DigitalOcean Holdings, Inc. | Technology | $64.9M | 0.2% | 413K | -3% | |||
| 124 | — | ISHARES TR - CORE S&P SCP ETF | — | $62.9M | 0.2% | 424K | +5% | |||
| 125 | $IRTC | iRhythm Holdings, Inc. | Healthcare | $62.4M | 0.2% | 525K | -17% | |||
| 126 | $APP | AppLovin Corp | Technology | $62.2M | 0.2% | 121K | -14% | |||
| 127 | $ROL | ROLLINS INC | Industrials | $61.6M | 0.2% | 1.48M | -35% | |||
| 128 | $ASML | ASML HOLDING NV | Technology | $61.5M | 0.2% | 31K | +149% | |||
| 129 | $RBA | RB GLOBAL INC. | Industrials | $61.3M | 0.2% | 527K | -8% | |||
| 130 | $CPRT | COPART INC | Consumer Discretionary | $60.7M | 0.2% | 2.15M | -47% | |||
| 131 | $TJX | TJX COMPANIES INC /DE/ | Consumer Discretionary | $59.8M | 0.2% | 395K | +0.1% | |||
| 132 | $SHOP | SHOPIFY INC. | Technology | $59.6M | 0.2% | 522K | -17% | |||
| 133 | $MCK | MCKESSON CORP | Consumer Staples | $58.9M | 0.1% | 78K | -3% | |||
| 134 | $NDAQ | NASDAQ, INC. | Financials | $58.8M | 0.1% | 745K | -27% | |||
| 135 | $AMAT | APPLIED MATERIALS INC /DE | Technology | $57.8M | 0.1% | 80K | +1.0% | |||
| 136 | — | VANGUARD INTL EQUITY INDEX F - FTSE EMR MKT ETF | — | $57.5M | 0.1% | 963K | +14% | |||
| 137 | $ALL | ALLSTATE CORP | Financials | $57.4M | 0.1% | 241K | -7% | |||
| 138 | $BLK | BlackRock, Inc. | Financials | $56.7M | 0.1% | 59K | -0.5% | |||
| 139 | — | ISHARES TR - RUS 1000 VAL ETF | — | $56.5M | 0.1% | 233K | -10% | |||
| 140 | $MSI | Motorola Solutions, Inc. | Technology | $54.7M | 0.1% | 132K | +7% | |||
| 141 | $AMGN | AMGEN INC | Healthcare | $54.6M | 0.1% | 151K | -3% | |||
| 142 | $MDY | SPDR S&P MIDCAP 400 ETF TRUST | — | $53.5M | 0.1% | 76K | +0.5% | |||
| 143 | $EPD | ENTERPRISE PRODUCTS PARTNERS L.P. | Energy | $53.5M | 0.1% | 1.45M | +0.0% | |||
| 144 | $MCHP | MICROCHIP TECHNOLOGY INC | Technology | $52.9M | 0.1% | 580K | -2% | |||
| 145 | — | ISHARES TR - CORE S&P MCP ETF | — | $52.9M | 0.1% | 686K | -0.3% | |||
| 146 | $EMR | EMERSON ELECTRIC CO | Industrials | $50.7M | 0.1% | 355K | -9% | |||
| 147 | $TXN | TEXAS INSTRUMENTS INC | Technology | $50.6M | 0.1% | 170K | +0.8% | |||
| 148 | $ADP | AUTOMATIC DATA PROCESSING INC | Technology | $50.4M | 0.1% | 225K | -1% | |||
| 149 | $PM | Philip Morris International Inc. | Consumer Staples | $48.8M | 0.1% | 270K | +13% | |||
| 150 | $INTC | INTEL CORP | Technology | $48.1M | 0.1% | 345K | -4% |
What changed in Q2 2026
Against the previous quarter's 13F: 158 new, 901 added to, 701 trimmed, 83 sold out. Share-count changes; largest moves by dollar size first.
New positions (158)
$HONAHoneywell Aerospace Inc.$100.4M
first bought this quarter
$PTRNPattern Group Inc.$17.7M
first bought this quarter
$SPCXSPACE EXPLORATION TECHNOLOGIES CORP$10.2Mfirst bought this quarter
$CDNLCardinal Infrastructure Group Inc.$9.2M
first bought this quarter
$CBRSCerebras Systems Inc.$6.4M
first bought this quarter
$HTFLHeartflow, Inc.$3.0M
first bought this quarter
+152 more in the Excel export
Added to (901)
- VANGUARD INDEX FDS - GROWTH ETF+510%
now $131.5M
- ISHARES TR - RUS 1000 GRW ETF+266%
now $120.9M
$KLACKLA CORP+799%
now $87.0M · held 7+ qtrs
$ANETArista Networks, Inc.+39%
now $272.6M · held 7+ qtrs, 3 adds in a row
now $421.8M · held 7+ qtrs, 6 adds in a row
- VANGUARD INDEX FDS - TOTAL STK MKT+42%
now $195.6M
+895 more in the Excel export
Trimmed (701)
$DHRDANAHER CORP /DE/-25%
now $185.0M · held 7+ qtrs, 2 trims in a row
now $1.7B · held 7+ qtrs
$MRVLMarvell Technology, Inc.-27%
now $158.0M · held 7+ qtrs
$VEEVVEEVA SYSTEMS INC-30%
now $133.3M · held 7+ qtrs, 3 trims in a row
$CPRTCOPART INC-47%
now $60.7M · held 7+ qtrs, 5 trims in a row
$SYKSTRYKER CORP-19%
now $215.5M · held 7+ qtrs
+695 more in the Excel export
Holdings by quarter
Every 13F BLAIR WILLIAM & CO/IL has filed, 41 earlier quarters. Pick one to see what it held then.
Is it too late to follow BLAIR WILLIAM?
Q2 2026 13F filed with the SEC on Aug 11, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of BLAIR WILLIAM's top 20 holdings: 77/100 (our AI quality score, weighted by position size; 18 of the 20 are scored)
Top 10 since filing
-1.1%
Value-weighted move of the 10 largest stock positions
Turnover
5%
Last quarter; 18% over the last 4
Top 10 weight
26%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
99%
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
BLAIR WILLIAM & CO/IL disclosed 1,998 positions worth $38.4B in its Form 13F-HR for Q2 2026, led by $AAPL (Apple Inc.) at 4.3% of the equity portfolio, followed by $AMZN and $MSFT. During the quarter the fund opened 158 new positions and exited 83 — including a new stake in $HONA and a full exit from $XOM.R34088. The portfolio is most concentrated in Technology (30.9% of disclosed assets). All figures are sourced directly from BLAIR WILLIAM & CO/IL’s Form 13F-HR filing with the SEC under CIK 902367.
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