WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Portfolio Holdings
Q3 2025•414 long positions•$38.7B portfolio value
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Holding462 | Sector | Position↕ | Ownership↕ | Shares Δ↕ | Shares Δ % | Market Cap↕ | Owned Since↕ |
|---|---|---|---|---|---|---|---|
Semiconductors Technology | $2.2B 5.58% | 0.048% 11.6M shares | 12.3M → 11.6M −$131.2M | -5.73% | $4.54T Mega Cap | Q2 2021 Held for 4y 5m | |
Software - Infrastructure Technology | $2.0B 5.14% | 0.052% 3.8M shares | 4.0M → 3.8M −$75.0M | -3.64% | $3.85T Mega Cap | Q3 2015 Held for 10y 2m | |
Semiconductors Technology | $1.8B 4.64% | — 6.4M shares | 6.6M → 6.4M −$55.9M | -3.02% | — — | Q4 2022 Held for 2y 11m | |
Consumer Electronics Technology | $1.4B 3.7% | 0.038% 5.6M shares | 5.3M → 5.6M +$93.4M | +6.98% | $3.78T Mega Cap | Q2 2024 Held for 1y 5m | |
Specialty Retail Consumer Cyclical | $970.8M 2.51% | 0.041% 4.4M shares | 5.4M → 4.4M −$215.0M | -18.13% | $2.34T Mega Cap | Q3 2015 Held for 10y 2m | |
Semiconductors Technology | $927.4M 2.4% | 0.06% 2.8M shares | 3.0M → 2.8M −$48.8M | -5.0% | $1.56T Mega Cap | Q2 2024 Held for 1y 5m | |
Internet Content & Information Communication Services | $871.1M 2.25% | 0.047% 1.2M shares | 1.4M → 1.2M −$178.4M | -17.0% | $1.84T Mega Cap | Q3 2015 Held for 10y 2m | |
Financial - Credit Services Financial Services | $628.7M 1.63% | 0.122% 1.1M shares | 1.2M → 1.1M −$65.4M | -9.42% | $514.21B Mega Cap | Q3 2015 Held for 10y 2m | |
Unknown Unknown | $619.0M 1.6% | — 3.5M shares | 3.6M → 3.5M −$22.3M | -3.47% | — — | Q3 2024 Held for 1y 2m | |
Internet Content & Information Communication Services | $604.3M 1.56% | 0.021% 2.5M shares | 359.2K → 2.5M +$517.0M | +592.03% | $2.95T Mega Cap | Q3 2015 Held for 10y 2m | |
Asset Management Financial Services | $548.6M 1.42% | 2.42% 8.7M shares | 9.9M → 8.7M −$75.3M | -12.07% | $22.7B Large Cap | Q4 2022 Held for 2y 11m | |
Specialty Retail Consumer Cyclical | $537.0M 1.39% | 0.453% 229.8K shares | 238.6K → 229.8K −$20.6M | -3.69% | $118.48B Large Cap | Q2 2019 Held for 6y 5m | |
Medical - Healthcare Information Services Healthcare | $426.4M 1.1% | 3.11% 5.8M shares | 5.2M → 5.8M +$44.6M | +11.68% | $13.7B Large Cap | Q1 2024 Held for 1y 8m | |
Consulting Services Industrials | $392.0M 1.01% | 2.4% 4.7M shares | 4.7M → 4.7M −$5.1M | -1.27% | $16.3B Large Cap | Q2 2024 Held for 1y 5m | |
Computer Hardware Technology | $391.1M 1.01% | 1.42% 4.7M shares | 4.9M → 4.7M −$21.8M | -5.28% | $27.5B Large Cap | Q1 2018 Held for 7y 8m | |
Communication Equipment Technology | $355.6M 0.919% | 1.73% 2.4M shares | 2.7M → 2.4M −$39.0M | -9.88% | $20.6B Large Cap | Q1 2025 Held for 8 months | |
Software - Application Technology | $344.2M 0.89% | 0.18% 374.0K shares | 350.6K → 374.0K +$21.6M | +6.69% | $190.98B Large Cap | Q2 2023 Held for 2y 5m | |
Software - Application Technology | $332.7M 0.86% | 0.175% 487.2K shares | 517.1K → 487.2K −$20.4M | -5.78% | $190.40B Large Cap | Q2 2017 Held for 8y 5m | |
Specialty Retail Consumer Cyclical | $314.3M 0.813% | 0.344% 2.9M shares | 3.5M → 2.9M −$67.7M | -17.73% | $91.5B Large Cap | Q4 2022 Held for 2y 11m | |
Software - Infrastructure Technology | $311.5M 0.805% | 0.039% 1.1M shares | 861.3K → 1.1M +$69.3M | +28.59% | $801.76B Mega Cap | Q2 2025 Held for 5 months | |
Banks - Diversified Financial Services | $311.4M 0.805% | 0.402% 19.4M shares | 6.9M → 19.4M +$201.3M | +182.92% | $77.4B Large Cap | Q4 2023 Held for 1y 11m | |
Discount Stores Consumer Defensive | $298.7M 0.772% | 0.073% 322.7K shares | 376.5K → 322.7K −$49.7M | -14.28% | $410.27B Mega Cap | Q3 2015 Held for 10y 2m | |
Medical - Diagnostics & Research Healthcare | $293.3M 0.758% | 0.574% 459.0K shares | 685.1K → 459.0K −$144.4M | -33.0% | $51.1B Large Cap | Q3 2015 Held for 10y 2m | |
Unknown Unknown | $289.1M 0.748% | 1.49% 679.7K shares | 1.1M → 679.7K −$179.5M | -38.31% | $19.4B Large Cap | Q4 2024 Held for 11 months | |
Medical - Diagnostics & Research Healthcare | $275.2M 0.712% | 0.756% 2.1M shares | 2.2M → 2.1M −$9.0M | -3.18% | $36.4B Large Cap | Q2 2018 Held for 7y 5m | |
Medical - Healthcare Plans Healthcare | $265.4M 0.686% | 0.085% 768.5K shares | 684.1K → 768.5K +$29.1M | +12.34% | $312.73B Mega Cap | Q3 2015 Held for 10y 2m | |
Unknown Unknown | $261.5M 0.676% | 3.17% 11.8M shares | 10.6M → 11.8M +$27.2M | +11.62% | $8.3B Mid Cap | Q4 2024 Held for 11 months | |
Software - Application Technology | $259.1M 0.67% | 0.127% 2.6M shares | 2.8M → 2.6M −$10.5M | -3.91% | $204.31B Mega Cap | Q4 2023 Held for 1y 11m | |
Semiconductors Technology | $256.1M 0.662% | 4.04% 2.0M shares | 1.1M → 2.0M +$114.1M | +80.35% | $6.3B Mid Cap | Q1 2025 Held for 8 months | |
Chemicals - Specialty Basic Materials | $255.3M 0.66% | 0.115% 537.4K shares | 604.0K → 537.4K −$31.6M | -11.03% | $222.73B Mega Cap | Q4 2018 Held for 6y 11m | |
Semiconductors Technology | $246.9M 0.638% | 0.146% 1.8M shares | 1.9M → 1.8M −$8.7M | -3.39% | $168.85B Large Cap | Q3 2019 Held for 6y 2m | |
Software - Application Technology | $240.2M 0.621% | 1.06% 459.1K shares | 358.5K → 459.1K +$52.7M | +28.07% | $22.6B Large Cap | Q2 2023 Held for 2y 5m | |
Electrical Equipment & Parts Industrials | $236.8M 0.612% | 1.49% 2.4M shares | 3.1M → 2.4M −$70.4M | -22.91% | $15.9B Large Cap | Q3 2024 Held for 1y 2m | |
Aerospace & Defense Industrials | $231.4M 0.598% | 1.37% 1.3M shares | 1.5M → 1.3M −$48.3M | -17.27% | $16.9B Large Cap | Q3 2016 Held for 9y 2m | |
Entertainment Communication Services | $228.8M 0.592% | 0.604% 1.4M shares | 1.6M → 1.4M −$36.7M | -13.84% | $37.9B Large Cap | Q2 2017 Held for 8y 5m | |
Insurance - Reinsurance Financial Services | $228.2M 0.59% | 1.55% 651.5K shares | 685.8K → 651.5K −$12.0M | -5.0% | $14.7B Large Cap | Q3 2023 Held for 2y 2m | |
Education & Training Services Consumer Defensive | $225.1M 0.582% | 3.46% 1.5M shares | 1.1M → 1.5M +$61.1M | +37.24% | $6.5B Mid Cap | Q1 2024 Held for 1y 8m | |
Biotechnology Healthcare | $223.9M 0.579% | 0.736% 1.6M shares | 1.7M → 1.6M −$15.9M | -6.64% | $30.4B Large Cap | Q1 2020 Held for 5y 8m | |
Medical - Healthcare Information Services Healthcare | $223.0M 0.577% | 0.457% 748.6K shares | 616.7K → 748.6K +$39.3M | +21.39% | $48.8B Large Cap | Q2 2016 Held for 9y 5m | |
Uranium Energy | $221.2M 0.572% | 0.606% 2.6M shares | 3.9M → 2.6M −$103.3M | -31.82% | $36.5B Large Cap | Q3 2018 Held for 7y 2m | |
Banks - Regional Financial Services | $218.4M 0.565% | 1.03% 820.1K shares | 477.8K → 820.1K +$91.1M | +71.65% | $21.1B Large Cap | Q4 2015 Held for 9y 11m | |
Unknown Unknown | $216.3M 0.559% | — 29.5M shares | 29.3M → 29.5M +$1.4M | +0.65% | — — | Q4 2022 Held for 2y 11m | |
Banks - Diversified Financial Services | $211.2M 0.546% | 0.102% 1.4M shares | 1.4M → 1.4M +$11.8M | +5.92% | $207.77B Mega Cap | Q4 2024 Held for 11 months | |
Auto - Dealerships Consumer Cyclical | $209.2M 0.541% | 0.481% 4.7M shares | 4.3M → 4.7M +$15.1M | +7.8% | $43.5B Large Cap | Q2 2016 Held for 9y 5m | |
Banks - Regional Financial Services | $207.7M 0.537% | 2.17% 2.4M shares | 2.3M → 2.4M +$7.1M | +3.52% | $9.6B Mid Cap | Q3 2015 Held for 10y 2m | |
Security & Protection Services Industrials | $206.8M 0.535% | 4.25% 1.8M shares | 2.0M → 1.8M −$22.6M | -9.84% | $4.9B Mid Cap | Q4 2018 Held for 6y 11m | |
Beverages - Non-Alcoholic Consumer Defensive | $201.9M 0.522% | 0.307% 3.0M shares | 3.1M → 3.0M −$9.7M | -4.59% | $65.7B Large Cap | Q1 2023 Held for 2y 8m | |
Manufacturing - Metal Fabrication Industrials | $201.7M 0.522% | 1.8% 2.0M shares | 2.3M → 2.0M −$32.8M | -14.0% | $11.2B Large Cap | Q4 2024 Held for 11 months | |
Information Technology Services Technology | $199.6M 0.516% | 3.02% 5.3M shares | 5.2M → 5.3M +$903.3K | +0.45% | $6.6B Mid Cap | Q1 2025 Held for 8 months | |
Internet Content & Information Communication Services | $197.1M 0.51% | 0.137% 282.3K shares | 371.8K → 282.3K −$62.4M | -24.06% | $143.63B Large Cap | Q4 2024 Held for 11 months |
