WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
13F Reported Value
ⓘ$33.3B
Holdings
403
Latest Filing
2026-06-30
Filing Quarter
Q2 2026
Portfolio Overview
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC disclosed 403 positions worth $33.3B in its Form 13F-HR for Q2 2026, led by $TSM (TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD) at 7.1% of the equity portfolio, followed by $NVDA and $GOOG. During the quarter the fund opened 46 new positions and exited 56 — including a new stake in $GE and a full exit from $COHR. The portfolio is most concentrated in Technology (43.7% of disclosed assets). All figures are sourced directly from WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC’s Form 13F-HR filing with the SEC under CIK 1644956.
AI Fund Analysis
Diversifying
Sector Allocation
AUM History
Top Equity Holdings by Value
Quarterly Activity — Q2 2026
Click any card to unlockTop Holdings
- $2.4B4,936,408 sh
- 85.9#5
Quality
$1.7B8,599,021 sh - 78.2#57
Quality
$1.1B3,191,012 sh - 76.4
Quality
$943.3M3,259,914 sh - 84.5
Quality
$776.7M2,056,135 sh - 79.8
Quality
$764.2M2,048,642 sh - 79.6
Quality
$535.2M950,115 sh - 68.7
Quality
$473.6M1,987,085 sh - 85.1
Quality
$471.5M918,005 sh - 79.8
Quality
$443.5M763,517 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
 TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD$TSM | — | $2.4B | 4,936,408 |
 NVIDIA CORP$NVDA | 85.9#5 | $1.7B | 8,599,021 |
 Alphabet Inc.$GOOG | 78.2#57 | $1.1B | 3,191,012 |
 Apple Inc.$AAPL | 76.4 | $943.3M | 3,259,914 |
 Broadcom Inc.$AVGO | 84.5 | $776.7M | 2,056,135 |
 MICROSOFT CORP$MSFT | 79.8 | $764.2M | 2,048,642 |
 Meta Platforms, Inc.$META | 79.6 | $535.2M | 950,115 |
 AMAZON COM INC$AMZN | 68.7 | $473.6M | 1,987,085 |
 Mastercard Inc$MA | 85.1 | $471.5M | 918,005 |
 ADVANCED MICRO DEVICES INC$AMD | 79.8 | $443.5M | 763,517 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's 403 positions.
Showing top 10 of 403 holdings.
Sector Allocation
Technology
$14.5B
Healthcare
$4.4B
Industrials
$4.0B
Financials
$3.5B
Consumer Discretionary
$2.2B
Materials
$1.6B
Energy
$891.5M
Consumer Staples
$758.3M
Top Holdings — WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (Q2 2026)
Top 150 of 403 disclosed positions (by reported value) from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | $TSM | TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | $2.4B | 7.1% | -11% | — |
| 2 | $NVDA | NVIDIA CORP | $1.7B | 5.2% | -4% | 85.9 |
| 3 | $GOOG | Alphabet Inc. | $1.1B | 3.4% | +27% | 78.2 |
| 4 | $AAPL | Apple Inc. | $943.3M | 2.8% | -32% | 76.4 |
| 5 | $AVGO | Broadcom Inc. | $776.7M | 2.3% | -7% | 84.5 |
| 6 | $MSFT | MICROSOFT CORP | $764.2M | 2.3% | -29% | 79.8 |
| 7 | $META | Meta Platforms, Inc. | $535.2M | 1.6% | -6% | 79.6 |
| 8 | $AMZN | AMAZON COM INC | $473.6M | 1.4% | -37% | 68.7 |
| 9 | $MA | Mastercard Inc | $471.5M | 1.4% | -13% | 85.1 |
| 10 | $AMD | ADVANCED MICRO DEVICES INC | $443.5M | 1.3% | -27% | 79.8 |
| 11 |  $AMAT | APPLIED MATERIALS INC /DE | $360.0M | 1.1% | +1325% | 72.3 |
| 12 |  $GE | GENERAL ELECTRIC CO | $295.5M | 0.9% | NEW | 73.8 |
| 13 |  $AZN | ASTRAZENECA PLC | $283.2M | 0.8% | -22% | — |
| 14 |  $PRMB | Primo Brands Corp | $279.3M | 0.8% | -12% | 60 |
| 15 | — | EVERPURE INC - CL A | $272.2M | 0.8% | +20% | — |
| 16 |  $APH | AMPHENOL CORP /DE/ | $270.7M | 0.8% | +42% | 79.3 |
| 17 |  $LIN | LINDE PLC | $262.0M | 0.8% | -21% | — |
| 18 |  $ONTO | ONTO INNOVATION INC. | $251.8M | 0.8% | -31% | 61.9 |
| 19 |  $BWA | BORGWARNER INC | $251.3M | 0.8% | +31% | 56 |
| 20 |  $CG | Carlyle Group Inc. | $249.1M | 0.8% | -6% | 59.8 |
| 21 |  $ARGX | ARGENX SE | $245.5M | 0.7% | -1% | — |
| 22 |  $MLI | MUELLER INDUSTRIES INC | $244.2M | 0.7% | -6% | 68.7 |
| 23 |  $MNST | Monster Beverage Corp | $244.0M | 0.7% | -14% | 71.3 |
| 24 |  $FFIV | F5, INC. | $243.9M | 0.7% | -10% | 66.9 |
| 25 |  $BAP | CREDICORP LTD | $243.5M | 0.7% | +0% | — |
| 26 |  $CW | CURTISS WRIGHT CORP | $240.4M | 0.7% | +37% | 69.5 |
| 27 |  $ITUB | Itau Unibanco Holding S.A. | $231.1M | 0.7% | -11% | — |
| 28 |  $SNOW | Snowflake Inc. | $229.3M | 0.7% | -20% | 54.9 |
| 29 |  $TWST | Twist Bioscience Corp | $223.7M | 0.7% | -59% | 33.9 |
| 30 |  $TEVA | TEVA PHARMACEUTICAL INDUSTRIES LTD | $223.4M | 0.7% | +362% | — |
| 31 |  $UNH | UNITEDHEALTH GROUP INC | $217.5M | 0.7% | -22% | 62.7 |
| 32 |  $CRWD | CrowdStrike Holdings, Inc. | $214.8M | 0.7% | NEW | 67.7 |
| 33 |  $RRX | REGAL REXNORD CORP | $212.3M | 0.6% | +6% | 52 |
| 34 |  $KRYS | Krystal Biotech, Inc. | $211.9M | 0.6% | +40% | 79.2 |
| 35 |  $CRS | CARPENTER TECHNOLOGY CORP | $205.2M | 0.6% | -5% | 64.6 |
| 36 |  $POWI | POWER INTEGRATIONS INC | $199.5M | 0.6% | +0% | 45.2 |
| 37 |  $NVT | nVent Electric plc | $198.1M | 0.6% | -5% | — |
| 38 |  $GH | Guardant Health, Inc. | $196.7M | 0.6% | +38% | 39 |
| 39 |  $HALO | HALOZYME THERAPEUTICS, INC. | $196.5M | 0.6% | -1% | 77.2 |
| 40 |  $TLN | Talen Energy Corp | $191.2M | 0.6% | -5% | 57.2 |
| 41 |  $TRU | TransUnion | $191.1M | 0.6% | -8% | 65.6 |
| 42 |  $CCJ | CAMECO CORP | $189.3M | 0.6% | +10% | — |
| 43 |  $STRL | STERLING INFRASTRUCTURE, INC. | $187.8M | 0.6% | -31% | 70.6 |
| 44 |  $COST | COSTCO WHOLESALE CORP /NEW | $186.5M | 0.6% | -34% | 66.2 |
| 45 |  $ALHC | Alignment Healthcare, Inc. | $184.8M | 0.6% | +49% | 64.2 |
| 46 |  $CHRW | C. H. ROBINSON WORLDWIDE, INC. | $184.3M | 0.6% | -6% | 52.1 |
| 47 |  $STX | Seagate Technology Holdings plc | $184.2M | 0.6% | NEW | — |
| 48 |  $DIOD | DIODES INC /DEL/ | $184.2M | 0.6% | +281% | 52.1 |
| 49 |  $BWXT | BWX Technologies, Inc. | $183.2M | 0.6% | -4% | 63.8 |
| 50 |  $AKAM | AKAMAI TECHNOLOGIES INC | $181.5M | 0.6% | -5% | 59.5 |
| 51 |  $BWIN | Baldwin Insurance Group, Inc. | $179.0M | 0.5% | -1% | 44.8 |
| 52 |  $BSY | BENTLEY SYSTEMS INC | $177.6M | 0.5% | +79% | 67.9 |
| 53 |  $LSCC | LATTICE SEMICONDUCTOR CORP | $177.5M | 0.5% | -43% | 48.7 |
| 54 |  $MDGL | MADRIGAL PHARMACEUTICALS, INC. | $174.0M | 0.5% | -5% | 40.7 |
| 55 |  $EG | EVEREST GROUP, LTD. | $171.4M | 0.5% | -5% | — |
| 56 |  $A | AGILENT TECHNOLOGIES, INC. | $171.0M | 0.5% | -28% | 67.1 |
| 57 |  $ORLY | O REILLY AUTOMOTIVE INC | $170.8M | 0.5% | -16% | 67.4 |
| 58 |  $DT | Dynatrace, Inc. | $169.4M | 0.5% | +19% | 64.4 |
| 59 |  $MIRM | Mirum Pharmaceuticals, Inc. | $164.5M | 0.5% | +318% | 35 |
| 60 |  $HQY | HEALTHEQUITY, INC. | $160.2M | 0.5% | +7% | 71.2 |
| 61 |  $IDXX | IDEXX LABORATORIES INC /DE | $157.0M | 0.5% | -15% | 73.8 |
| 62 |  $NOW | ServiceNow, Inc. | $154.0M | 0.5% | -35% | 72.9 |
| 63 |  $SYNA | SYNAPTICS Inc | $154.0M | 0.5% | -22% | 36.6 |
| 64 |  $TXN | TEXAS INSTRUMENTS INC | $150.9M | 0.5% | +19% | 73.4 |
| 65 |  $SN | SharkNinja, Inc. | $150.3M | 0.5% | -8% | 66.8 |
| 66 |  $WST | WEST PHARMACEUTICAL SERVICES INC | $149.8M | 0.5% | +950% | 64.4 |
| 67 |  $LOPE | Grand Canyon Education, Inc. | $148.7M | 0.5% | +6% | 65.2 |
| 68 |  $LFUS | LITTELFUSE INC /DE | $146.5M | 0.4% | +6% | 51.6 |
| 69 |  $CNQ | CANADIAN NATURAL RESOURCES Ltd | $143.7M | 0.4% | NEW | — |
| 70 |  $RS | RELIANCE, INC. | $142.9M | 0.4% | -5% | 50.9 |
| 71 |  $TTE | TotalEnergies SE | $141.4M | 0.4% | +113% | 50.6 |
| 72 |  $FPS | Forgent Power Solutions, Inc. | $140.6M | 0.4% | NEW | — |
| 73 |  $PTCT | PTC THERAPEUTICS, INC. | $140.5M | 0.4% | NEW | 35.4 |
| 74 |  $TKR | TIMKEN CO | $138.8M | 0.4% | NEW | 54.4 |
| 75 |  $CYTK | CYTOKINETICS INC | $136.6M | 0.4% | +47% | 28.1 |
| 76 |  $LECO | LINCOLN ELECTRIC HOLDINGS INC | $134.6M | 0.4% | -5% | 60.1 |
| 77 |  $EXP | EAGLE MATERIALS INC | $129.8M | 0.4% | -9% | 57 |
| 78 |  $CLH | CLEAN HARBORS INC | $125.2M | 0.4% | -5% | 55.6 |
| 79 |  $NOVT | NOVANTA INC | $124.3M | 0.4% | -2% | 51.2 |
| 80 |  $BIRK | Birkenstock Holding plc | $123.3M | 0.4% | +11% | — |
| 81 |  $FHN | FIRST HORIZON CORP | $123.3M | 0.4% | -5% | 56.4 |
| 82 |  $ETSY | ETSY INC | $120.4M | 0.4% | NEW | 61.2 |
| 83 |  $TIGO | MILLICOM INTERNATIONAL CELLULAR SA | $118.9M | 0.4% | -7% | — |
| 84 |  $DBD | DIEBOLD NIXDORF, Inc | $117.3M | 0.3% | -3% | 57.2 |
| 85 |  $GTX | Garrett Motion Inc. | $117.1M | 0.3% | -44% | 56.8 |
| 86 |  $EHC | Encompass Health Corp | $116.4M | 0.3% | +43% | 66.9 |
| 87 |  $APPF | APPFOLIO INC | $115.7M | 0.3% | +12% | 71.6 |
| 88 |  $MAR | MARRIOTT INTERNATIONAL INC /MD/ | $111.5M | 0.3% | +256% | 61.7 |
| 89 |  $NBHC | National Bank Holdings Corp | $111.0M | 0.3% | +1% | 43.8 |
| 90 |  $CMG | CHIPOTLE MEXICAN GRILL INC | $110.0M | 0.3% | -17% | 65.1 |
| 91 |  $SAIA | SAIA INC | $109.1M | 0.3% | +52% | 58.2 |
| 92 |  $RGEN | REPLIGEN CORP | $107.6M | 0.3% | NEW | 58.4 |
| 93 |  $FRPT | Freshpet, Inc. | $107.1M | 0.3% | -0% | 61.1 |
| 94 |  $JAZZ | Jazz Pharmaceuticals plc | $105.3M | 0.3% | +516% | — |
| 95 |  $MLM | MARTIN MARIETTA MATERIALS INC | $104.9M | 0.3% | -33% | 62.9 |
| 96 |  $KNX | Knight-Swift Transportation Holdings Inc. | $103.6M | 0.3% | +41% | 54.4 |
| 97 |  $WFRD | Weatherford International plc | $102.8M | 0.3% | +117% | — |
| 98 |  $GMED | GLOBUS MEDICAL INC | $101.5M | 0.3% | -36% | 79.5 |
| 99 |  $NU | Nu Holdings Ltd. | $101.5M | 0.3% | -38% | — |
| 100 |  $HBM | Hudbay Minerals Inc. | $99.5M | 0.3% | NEW | — |
| 101 |  $ONB | OLD NATIONAL BANCORP /IN/ | $99.3M | 0.3% | -2% | 66.8 |
| 102 |  $LB | LandBridge Co LLC | $97.9M | 0.3% | +39% | 63.1 |
| 103 |  $WGS | GeneDx Holdings Corp. | $96.2M | 0.3% | +81% | 35.4 |
| 104 |  $CASY | CASEYS GENERAL STORES INC | $95.6M | 0.3% | +2% | 65.1 |
| 105 |  $MANH | MANHATTAN ASSOCIATES INC | $94.0M | 0.3% | +7% | 64.1 |
| 106 |  $GKOS | GLAUKOS Corp | $92.5M | 0.3% | -38% | 40.5 |
| 107 |  $CHDN | Churchill Downs Inc | $92.3M | 0.3% | -6% | 61.2 |
| 108 |  $EYE | National Vision Holdings, Inc. | $90.2M | 0.3% | +12% | 52.5 |
| 109 |  $CAVA | CAVA GROUP, INC. | $89.9M | 0.3% | -52% | 57.1 |
| 110 |  $CFR | CULLEN/FROST BANKERS, INC. | $89.4M | 0.3% | -5% | 63.4 |
| 111 |  $CPRT | COPART INC | $89.1M | 0.3% | -28% | 69.1 |
| 112 |  $VCEL | Vericel Corp | $88.7M | 0.3% | +9% | 62.8 |
| 113 |  $CART | Maplebear Inc. | $86.5M | 0.3% | -5% | 70.6 |
| 114 |  $FLS | FLOWSERVE CORP | $84.9M | 0.3% | +24% | 70.7 |
| 115 |  $VCYT | VERACYTE, INC. | $84.1M | 0.3% | +45% | 68.6 |
| 116 |  $OSIS | OSI SYSTEMS INC | $83.0M | 0.3% | +121% | 59.2 |
| 117 |  $EVR | Evercore Inc. | $81.8M | 0.3% | -7% | 76.9 |
| 118 |  $NXT | Nextpower Inc. | $80.0M | 0.2% | -59% | 69.1 |
| 119 |  $STEP | StepStone Group Inc. | $79.8M | 0.2% | +1% | 45.2 |
| 120 |  $VIST | Vista Energy, S.A.B. de C.V. | $79.5M | 0.2% | +124% | — |
| 121 |  $VSH | VISHAY INTERTECHNOLOGY INC | $79.1M | 0.2% | -18% | 48.8 |
| 122 |  $MMSI | MERIT MEDICAL SYSTEMS INC | $78.9M | 0.2% | +46% | 64 |
| 123 |  $VRSK | Verisk Analytics, Inc. | $77.1M | 0.2% | -22% | 71.2 |
| 124 |  $GWRE | Guidewire Software, Inc. | $75.0M | 0.2% | +78% | 67.3 |
| 125 |  $AAOI | APPLIED OPTOELECTRONICS, INC. | $74.7M | 0.2% | NEW | 40.1 |
| 126 |  $HLIO | HELIOS TECHNOLOGIES, INC. | $74.5M | 0.2% | -10% | 54.6 |
| 127 |  $LRN | Stride, Inc. | $71.0M | 0.2% | NEW | 64.5 |
| 128 |  $PWP | Perella Weinberg Partners | $70.1M | 0.2% | +8% | 38.9 |
| 129 |  $APG | APi Group Corp | $69.9M | 0.2% | -5% | 65.4 |
| 130 |  $KMT | KENNAMETAL INC | $69.6M | 0.2% | -20% | 55.7 |
| 131 |  $JBTM | JBT MAREL Corp | $67.5M | 0.2% | +177% | 64.3 |
| 132 |  $INSM | INSMED Inc | $67.2M | 0.2% | -30% | 39.4 |
| 133 |  $LAUR | LAUREATE EDUCATION, INC. | $67.0M | 0.2% | -14% | 61.7 |
| 134 |  $TEX | TEREX CORP | $66.9M | 0.2% | +8% | 58.6 |
| 135 |  $KWR | QUAKER CHEMICAL CORP | $66.8M | 0.2% | +8% | 44.9 |
| 136 |  $CGNX | COGNEX CORP | $66.0M | 0.2% | -10% | 66.9 |
| 137 |  $CIEN | CIENA CORP | $65.6M | 0.2% | -66% | 72.9 |
| 138 |  $MRX | Marex Group Ltd | $61.5M | 0.2% | -36% | — |
| 139 |  $ESTA | ESTABLISHMENT LABS HOLDINGS INC. | $61.3M | 0.2% | +4% | 33.9 |
| 140 |  $SPCX | SPACE EXPLORATION TECHNOLOGIES CORP | $59.7M | 0.2% | NEW | — |
| 141 |  $SCCO | SOUTHERN COPPER CORP/ | $59.4M | 0.2% | -7% | 83.1 |
| 142 |  $BFAM | BRIGHT HORIZONS FAMILY SOLUTIONS INC. | $58.1M | 0.2% | -18% | 61.9 |
| 143 |  $MOD | MODINE MANUFACTURING CO | $57.1M | 0.2% | -12% | 56.3 |
| 144 |  $TPG | TPG Inc. | $56.3M | 0.2% | +25% | 71.9 |
| 145 |  $RACE | Ferrari N.V. | $55.1M | 0.2% | -18% | — |
| 146 |  $CRCL | Circle Internet Group, Inc. | $53.9M | 0.2% | NEW | 67.5 |
| 147 |  $AUB | Atlantic Union Bankshares Corp | $53.5M | 0.2% | -8% | 73.1 |
| 148 |  $RVLV | Revolve Group, Inc. | $53.4M | 0.2% | +32% | 51.4 |
| 149 |  $PSMT | PRICESMART INC | $53.2M | 0.2% | +414% | 57.8 |
| 150 |  $BCPC | BALCHEM CORP | $53.1M | 0.2% | -0% | 64.5 |
New Positions (46)
$GE GENERAL ELECTRIC CO$295.5M$CRWD CrowdStrike Holdings, Inc.$214.8M$STX Seagate Technology Holdings plc$184.2M$CNQ CANADIAN NATURAL RESOURCES Ltd$143.7M$FPS Forgent Power Solutions, Inc.$140.6M$PTCT PTC THERAPEUTICS, INC.$140.5M$ETSY ETSY INC$120.4M$RGEN REPLIGEN CORP$107.6M$HBM Hudbay Minerals Inc.$99.5M$AAOI APPLIED OPTOELECTRONICS, INC.$74.7M$LRN Stride, Inc.$71.0M$SPCX SPACE EXPLORATION TECHNOLOGIES CORP$59.7M$CRCL Circle Internet Group, Inc.$53.9M
$AMX AMERICA MOVIL SAB DE CV/$52.2M
$KRMN Karman Holdings Inc.$48.8MExited Positions (56)
$COHR COHERENT CORP.
$VEEV VEEVA SYSTEMS INC
$DOCS Doximity, Inc.
$PLNT Planet Fitness, Inc.
$POOL POOL CORP
$WMS ADVANCED DRAINAGE SYSTEMS, INC.
$PSN PARSONS CORP
$TYL TYLER TECHNOLOGIES INC
$INSP Inspire Medical Systems, Inc.
$SPOT Spotify Technology S.A.
$BRBR BELLRING BRANDS, INC.
$GFI GOLD FIELDS LTD
$LPX LOUISIANA-PACIFIC CORP
$BE Bloom Energy Corp
$SILA Sila Realty Trust, Inc.Browse Top Institutional Investors
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