WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Institutional investor · Portfolio as of Q3 2021
Top Holdings431 positions
TAIWAN SEMICONDUCTOR MANUFAC | 11M | $1.2B | 3.5% | $36.66 | +181.15% | 12 qtrssince 2018-Q4 | Increased 59 |
MICROSOFT CORP | 1.9M | $530.6M | 1.5% | $144.71 | +86.97% | 12 qtrssince 2018-Q4 | Decreased 0 |
SEA LTD | 1.6M | $511.1M | 1.4% | $102.73 | +203.48% | 10 qtrssince 2019-Q2 | Increased 54 |
MERCADOLIBRE INC | 300,376 | $504.5M | 1.4% | $848.65 | +97.89% | 10 qtrssince 2019-Q2 | Increased 55 |
BUILDERS FIRSTSOURCE INC | 8.5M | $439.4M | 1.2% | $38.50 | +40.07% | 5 qtrssince 2020-Q3 | Increased 49 |
CANADIAN NATL RY CO | 3.6M | $418.3M | 1.2% | $72.00 | +45.42% | 12 qtrssince 2018-Q4 | Decreased 0 |
AMAZON COM INC | 122,696 | $403.1M | 1.1% | $90.41 | +81.68% | 12 qtrssince 2018-Q4 | Decreased 0 |
DYNATRACE INC | 5.6M | $398.6M | 1.1% | $51.04 | +39.04% | 3 qtrssince 2021-Q1 | Decreased 0 |
ALPHABET INC | 147,079 | $393.2M | 1.1% | $55.40 | +139.01% | 12 qtrssince 2018-Q4 | Decreased 0 |
BWX TECHNOLOGIES INC | 7.3M | $390.7M | 1.1% | $37.76 | +35.24% | 12 qtrssince 2018-Q4 | Decreased 0 |
CHARLES RIV LABS INTL INC | 942,596 | $389M | 1.1% | $279.38 | +51.44% | 5 qtrssince 2020-Q3 | Decreased 0 |
EVERPURE INC | 15.5M | $388.9M | 1.1% | $17.12 | +46.95% | 12 qtrssince 2018-Q4 | Decreased 0 |
AZENTA INC | 3.8M | $385.6M | 1.1% | $34.84 | +196.65% | 7 qtrssince 2020-Q1 | Decreased 0 |
NICE LTD | 1.3M | $382.3M | 1.1% | $131.92 | +112.75% | 12 qtrssince 2018-Q4 | Increased 50 |
STATE STR SPDR S&P 500 ETF T | 835,250 | $358.4M | 1.0% | $231.05 | +73.72% | 12 qtrssince 2018-Q4 | Decreased 0 |
HORIZON THERAPEUTICS PUB L | 3.1M | $341.5M | 1.0% | — | — | 10 qtrssince 2019-Q2 | Decreased 0 |
CROWN HLDGS INC | 3.4M | $338.7M | 1.0% | $62.91 | +51.64% | 11 qtrssince 2019-Q1 | Decreased 0 |
NEBIUS GROUP N.V. | 4.2M | $336.6M | 0.9% | — | — | 12 qtrssince 2018-Q4 | Increased 45 |
AXON ENTERPRISE INC | 1.9M | $328.9M | 0.9% | $95.69 | +83.03% | 5 qtrssince 2020-Q3 | Decreased 0 |
BRINKS CO | 5.1M | $325.1M | 0.9% | $59.18 | +1.14% | 12 qtrssince 2018-Q4 | Decreased 0 |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC manages $35.5B across 431 positions as of Q3 2021. Top holdings: TSM (3.5%), MSFT (1.5%), SE (1.4%). Fund DNA: Balanced Allocator. HoldingsIntel Score: 3/5.0.
Active quarter - 55 new positions, 89 exits, 211 increased. Top move: TSM (INCREASED, conviction 59). Portfolio: $35.5B across 431 positions.
Top holdings by portfolio weight
Portfolio allocation by GICS sector
Behavioral investing profile
Position Outcomes
Best and worst performing positions by estimated return
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Cost basis estimates based on full filing history using quarter-end prices. Actual transaction prices are not disclosed in 13F filings.
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Data sourced from SEC EDGAR 13F filings. Not financial advice. Full disclaimer
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