WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK: 0001644956Latest portfolio: $35.9B · Q4 2025
Holdings
413
Total Value
$35.9B
New Positions
46
Closed Positions
47
Top Holdings
View All 413 Holdings →| # | Stock | Shares | Value | % Portfolio | Change | Type |
|---|---|---|---|---|---|---|
| 1 | NVDANVIDIA CORPORATION | 10,628,667 | $2.0B | 5.53% | -940,334 | |
| 2 | TSMTAIWAN SEMICONDUCTOR MFG LTD | 5,985,330 | $1.8B | 5.07% | -436,828 | |
| 3 | MSFTMICROSOFT CORP | 3,490,302 | $1.7B | 4.71% | -346,524 | |
| 4 | AAPLAPPLE INC | 5,444,328 | $1.5B | 4.13% | -176,125 | |
| 5 | AMZNAMAZON COM INC | 4,387,003 | $1.0B | 2.82% | -34,158 | |
| 6 | GOOGLALPHABET INC | 3,154,973 | $987.5M | 2.75% | +669K | |
| 7 | AVGOBROADCOM INC | 2,536,611 | $877.9M | 2.45% | -274,513 | |
| 8 | METAMETA PLATFORMS INC | 1,186,769 | $783.4M | 2.19% | +642 | |
| 9 | MAMASTERCARD INCORPORATED | 1,084,947 | $619.4M | 1.73% | -20,398 | |
| 10 | CGCARLYLE GROUP INC | 7,131,902 | $421.6M | 1.18% | -1,617,073 | |
| 11 | TRUTRANSUNION | 3,965,495 | $340.0M | 0.95% | -713,314 | |
| 12 | MLB1MERCADOLIBRE INC | 165,579 | $333.5M | 0.93% | -64,225 | |
| 13 | NOWSERVICENOW INC | 2,148,780 | $329.2M | 0.92% | +1.8M | |
| 14 | NUNU HLDGS LTD | 18,699,367 | $313.0M | 0.87% | -750,057 | |
| 15 | SESEA LTD | 2,370,876 | $302.4M | 0.84% | -1,092,656 | |
| 16 | IDXXIDEXX LABS INC | 441,324 | $298.6M | 0.83% | -17,695 | |
| 17 | SNOWSNOWFLAKE INC | 1,346,998 | $295.5M | 0.82% | +829K | |
| 18 | INTUINTUIT | 442,391 | $293.0M | 0.82% | -44,841 | |
| 19 | MNSTMONSTER BEVERAGE CORP NEW | 3,761,249 | $288.4M | 0.80% | +762K | |
| 20 | AMDADVANCED MICRO DEVICES INC | 1,339,546 | $286.9M | 0.80% | +292K | |
| 21 | COSTCOSTCO WHSL CORP NEW | 328,468 | $283.3M | 0.79% | +6K | |
| 22 | AG8AGILENT TECHNOLOGIES INC | 2,063,009 | $280.7M | 0.78% | -81,077 | |
| 23 | LINLINDE PLC | 643,470 | $274.4M | 0.77% | +106K | |
| 24 | ONTOONTO INNOVATION INC | 1,726,587 | $272.6M | 0.76% | -255,174 | |
| 25 | ORLYOREILLY AUTOMOTIVE INC | 2,981,507 | $271.9M | 0.76% | +66K |
Quarterly Changes
New Positions
Increased Positions
Sector Breakdown
TechnologyNaN% ($InfinityT)
Financial ServicesNaN% ($InfinityT)
Industrials0.0% ($InfinityT)
Healthcare0.0% ($2.985682516242417e+222T)
Consumer Cyclical0.0% ($1.012608302415272e+202T)
Unknown0.0% ($3.335192807132125e+104T)
Real Estate0.0% ($9.273445071369413e+95T)
Consumer Defensive0.0% ($2.8837428325120646e+79T)
Basic Materials0.0% ($2.743691682441155e+77T)
Communication Services0.0% ($9.875067833741813e+51T)
Energy0.0% ($4.9732400043381726e+51T)
Utilities0.0% ($2.134337290828036e+30T)
Filing History
| Quarter | Filing Date | Portfolio Value | Holdings |
|---|---|---|---|
| Q4 2025 | Feb 9, 2026 | $35.9B | 413 |
| Q3 2025 | Nov 12, 2025 | $38.7T | 414 |
| Q2 2025 | Jul 29, 2025 | $37.7T | 417 |
| Q1 2025 | May 9, 2025 | $35.6T | 423 |
| Q4 2024 | Feb 10, 2025 | $40.9T | 433 |
| Q3 2024 | Nov 8, 2024 | $40534.4T | 412 |
| Q2 2024 | Aug 8, 2024 | $38120.4T | 411 |
| Q1 2024 | May 8, 2024 | $38687.5T | 410 |
| Q4 2023 | Feb 9, 2024 | $34363.3T | 406 |
| Q3 2023 | Nov 9, 2023 | $30093.1T | 398 |
| Q2 2023 | Aug 11, 2023 | $31184.9T | 395 |
| Q1 2023 | May 12, 2023 | $28699.4T | 393 |
| Q4 2022 | Feb 9, 2023 | $26141.5T | 401 |
| Q3 2022 | Nov 9, 2022 | $25.3T | 387 |
| Q2 2022 | Aug 10, 2022 | $27.0T | 403 |
| Q1 2022 | May 11, 2022 | $33.5T | 441 |
| Q4 2021 | Feb 14, 2022 | $37.0T | 427 |
| Q3 2021 | Nov 10, 2021 | $35.5T | 431 |
| Q2 2021 | Aug 12, 2021 | $31.9T | 465 |
| Q1 2021 | May 13, 2021 | $30.9T | 367 |
| Q4 2020 | Feb 9, 2021 | $30.0T | 356 |
| Q3 2020 | Nov 6, 2020 | $25.7T | 343 |
| Q2 2020 | Aug 12, 2020 | $24.6T | 341 |
| Q1 2020 | May 8, 2020 | $20.5T | 339 |
| Q4 2019 | Feb 12, 2020 | $25.1T | 356 |
| Q3 2019 | Nov 12, 2019 | $23.4T | 357 |
| Q2 2019 | Aug 9, 2019 | $23.8T | 372 |
| Q1 2019 | May 10, 2019 | $23.8T | 406 |
| Q4 2018 | Feb 13, 2019 | $20.1T | 404 |
| Q3 2018 | Nov 13, 2018 | $28.9T | 419 |
| Q2 2018 | Aug 14, 2018 | $26.9T | 476 |
| Q1 2018 | May 14, 2018 | $26.2T | 432 |
| Q4 2017 | Feb 14, 2018 | $25.5T | 426 |
| Q3 2017 | Nov 13, 2017 | $27.9T | 434 |
| Q2 2017 | Aug 4, 2017 | $27.5T | 448 |
| Q1 2017 | May 10, 2017 | $26.5T | 433 |
| Q4 2016 | Feb 14, 2017 | $25.0T | 435 |
| Q3 2016 | Nov 14, 2016 | $26.4T | 443 |
| Q2 2016 | Aug 8, 2016 | $25.3T | 451 |
| Q1 2016 | May 16, 2016 | $25.2T | 450 |
Fund Information
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC is an institutional investment manager that files 13F reports with the SEC. As of the Q4 2025 filing, the fund reported a portfolio valued at $35.9B across 413 holdings. The largest position is NVIDIA CORPORATION (NVDA), representing 5.5% of the portfolio. Compared to the previous quarter, the fund opened 46 new positions and closed 47 positions. 13F filings are required quarterly disclosures that provide transparency into the holdings of institutional investment managers with at least $100 million in qualifying assets.