EdgeMarket › What William Blair Investment Management, Llc reported owning
What William Blair Investment Management, Llc reported owning
As filed on Form 13F for the quarter ending 2026-03-31, up to 45 days after that date. Long-only US-listed equity — shorts, bonds, cash and non-US listings are not on the form, so this is one leg of the book, not the book.
Reported value
30.3BPositions
413Quarter
2026-03-31Shown below
50largest by value
| holding | value | % of book | shares | price | 1y |
|---|---|---|---|---|---|
| TSM TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD | 1.9B | 6.2% | 5.5M | 418.95 | +83.3% |
| NVDA NVIDIA CORP | 1.6B | 5.2% | 8.9M | 214.72 | +22.4% |
| AAPL Apple Inc. | 1.2B | 4.0% | 4.8M | 309.35 | +36.9% |
| MSFT MICROSOFT CORP | 1.1B | 3.5% | 2.9M | 483.24 | -4.4% |
| GOOGL Alphabet Inc. | 720.2M | 2.4% | 2.5M | 344.82 | +73.0% |
| AVGO Broadcom Inc. | 681.4M | 2.3% | 2.2M | 368.45 | +26.5% |
| AMZN AMAZON COM INC | 658.9M | 2.2% | 3.2M | 258.63 | +15.6% |
| META Meta Platforms, Inc. | 579.6M | 1.9% | 1.0M | 549.90 | -26.5% |
| MA Mastercard Inc | 530.0M | 1.8% | 1.1M | 580.63 | -2.0% |
| AZN ASTRAZENECA PLC | 377.3M | 1.2% | 1.9M | 165.98 | — |
| LIN LINDE PLC | 315.5M | 1.0% | 636.3K | 487.57 | +1.1% |
| CG Carlyle Group Inc. | 304.9M | 1.0% | 6.3M | 49.37 | -19.5% |
| COST COSTCO WHOLESALE CORP /NEW | 301.4M | 1.0% | 302.5K | 947.74 | -4.7% |
| ITUB Itau Unibanco Holding S.A. | 265.6M | 0.9% | 31.7M | 7.48 | +12.8% |
| TWST Twist Bioscience Corp | 250.4M | 0.8% | 5.3M | 145.59 | +450.4% |
| NOW ServiceNow, Inc. | 248.0M | 0.8% | 2.4M | 128.48 | -27.8% |
| PRMB Primo Brands Corp | 245.8M | 0.8% | 13.1M | 23.12 | -7.8% |
| MLI MUELLER INDUSTRIES INC | 233.8M | 0.8% | 2.1M | 63.22 | +37.9% |
| INTU INTUIT INC. | 230.8M | 0.8% | 533.7K | 367.00 | -47.5% |
| MNST Monster Beverage Corp | 212.7M | 0.7% | 2.9M | 47.79 | -25.8% |
| AMD ADVANCED MICRO DEVICES INC | 212.1M | 0.7% | 1.0M | 473.25 | +186.5% |
| BAP CREDICORP LTD | 211.2M | 0.7% | 622.7K | 378.97 | +52.2% |
| A AGILENT TECHNOLOGIES, INC. | 204.7M | 0.7% | 1.8M | 159.00 | +33.5% |
| ORLY O REILLY AUTOMOTIVE INC | 204.0M | 0.7% | 2.2M | 89.11 | -14.3% |
| BWXT BWX Technologies, Inc. | 200.8M | 0.7% | 981.8K | 156.78 | -4.1% |
| TRU TransUnion | 200.0M | 0.7% | 2.9M | 84.61 | -3.6% |
| ONTO ONTO INNOVATION INC. | 197.7M | 0.7% | 964.2K | 293.33 | +176.9% |
| IDXX IDEXX LABORATORIES INC /DE | 197.6M | 0.7% | 351.6K | 556.93 | -13.0% |
| NXT Nextpower Inc. | 195.6M | 0.6% | 1.6M | 86.18 | +30.3% |
| ARGX ARGENX SE | 194.4M | 0.6% | 266.1K | 1,039.78 | +57.3% |
| CAVA CAVA GROUP, INC. | 193.7M | 0.6% | 2.4M | 73.63 | +7.4% |
| LSCC LATTICE SEMICONDUCTOR CORP | 189.6M | 0.6% | 2.0M | 117.69 | +91.7% |
| FFIV F5, INC. | 188.0M | 0.6% | 649.9K | 384.63 | +21.8% |
| AKAM AKAMAI TECHNOLOGIES INC | 185.9M | 0.6% | 1.6M | 110.42 | +45.2% |
| CCJ CAMECO CORP | 182.7M | 0.6% | 1.7M | 102.51 | +45.5% |
| UNH UNITEDHEALTH GROUP INC | 182.2M | 0.6% | 673.3K | 390.11 | +30.1% |
| MDGL MADRIGAL PHARMACEUTICALS, INC. | 178.3M | 0.6% | 340.5K | 516.74 | +31.9% |
| NU Nu Holdings Ltd. | 176.3M | 0.6% | 12.3M | 14.58 | +7.0% |
| GMED GLOBUS MEDICAL INC | 173.2M | 0.6% | 2.0M | 86.91 | +43.1% |
| CHRW C. H. ROBINSON WORLDWIDE, INC. | 173.0M | 0.6% | 1.0M | 141.63 | +17.0% |
| P Everpure, Inc. | 170.1M | 0.6% | 2.9M | 108.55 | +95.5% |
| SNOW Snowflake Inc. | 170.1M | 0.6% | 1.1M | 332.78 | +70.8% |
| TLN Talen Energy Corp | 167.7M | 0.6% | 525.2K | 314.46 | -12.7% |
| LOPE Grand Canyon Education, Inc. | 166.6M | 0.6% | 979.7K | 147.46 | -26.8% |
| EG EVEREST GROUP, LTD. | 165.4M | 0.5% | 506.2K | 370.06 | +7.7% |
| HALO HALOZYME THERAPEUTICS, INC. | 163.3M | 0.5% | 2.5M | 108.17 | +52.1% |
| MLM MARTIN MARIETTA MATERIALS INC | 160.4M | 0.5% | 272.4K | 534.92 | -10.9% |
| COHR COHERENT CORP. | 159.2M | 0.5% | 668.1K | 289.52 | +234.5% |
| CW CURTISS WRIGHT CORP | 158.1M | 0.5% | 232.1K | 634.99 | +32.2% |
| RRX REGAL REXNORD CORP | 156.8M | 0.5% | 837.5K | 166.15 | +14.7% |
A position that grew quarter on quarter may simply reflect a higher price: if the stock rose 40% and the manager did nothing, the reported value rose 40%. Reading that as accumulation is reading the price back to yourself. More on that →
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