WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Institutional investor · Portfolio as of Q1 2021
Top Holdings367 positions
Stock | Shares | Value | Weight | Avg Buy | Est. P&L | Held | Conviction |
|---|---|---|---|---|---|---|---|
TAIWAN SEMICONDUCTOR SPONSORED ADR /1 ADR REPS 5 ORD SHS/ | 10.3M | $1.2B | 4.0% | $32.36 | +228.24% | 10 qtrssince 2018-Q4 | Decreased 0 |
STATE STREET SPDR S&P 500 ETF TRUST CL USD INC | 1.4M | $565.3M | 1.8% | $231.03 | +60.02% | 10 qtrssince 2018-Q4 | Decreased 0 |
BWX TECHNOLOGIES INC | 7.5M | $492M | 1.6% | $37.76 | +64.41% | 10 qtrssince 2018-Q4 | Increased 50 |
MICROSOFT CORP | 1.9M | $454.2M | 1.5% | $141.58 | +57.49% | 10 qtrssince 2018-Q4 | Increased 56 |
CANADIAN NATL RAILWAY CO | 3.8M | $442.8M | 1.4% | $72.82 | +45.45% | 10 qtrssince 2018-Q4 | Increased 58 |
GRAND CANYON ED INC | 4.1M | $439.3M | 1.4% | $92.74 | +16.72% | 10 qtrssince 2018-Q4 | Increased 49 |
BRINK'S CO/THE | 5.3M | $422.5M | 1.4% | $59.18 | +25.93% | 10 qtrssince 2018-Q4 | Increased 50 |
MERCADOLIBRE INC | 275,029 | $404.9M | 1.3% | $747.51 | +91.04% | 8 qtrssince 2019-Q2 | Decreased 0 |
AMAZON.COM INC | 125,832 | $389.3M | 1.3% | $87.79 | +74.02% | 10 qtrssince 2018-Q4 | Increased 51 |
HORIZON THERAPEUTICS PLC | 4.1M | $381.9M | 1.2% | — | — | 8 qtrssince 2019-Q2 | Decreased 0 |
ENCOMPASS HEALTH CORP | 4.6M | $376.7M | 1.2% | $45.30 | +37.85% | 10 qtrssince 2018-Q4 | Decreased 0 |
ALPHABET INC-CL A | 162,957 | $336.1M | 1.1% | $55.44 | +83.20% | 10 qtrssince 2018-Q4 | Increased 49 |
CROWN HOLDINGS INC | 3.4M | $334.1M | 1.1% | $62.91 | +45.46% | 9 qtrssince 2019-Q1 | Increased 54 |
PURE STORAGE INC - CLASS A | 15.5M | $333M | 1.1% | $16.89 | +23.71% | 10 qtrssince 2018-Q4 | Decreased 0 |
MARTIN MARIETTA MATERIALS | 982,332 | $329.9M | 1.1% | $166.53 | +100.33% | 10 qtrssince 2018-Q4 | Decreased 0 |
SEA LTD-ADR | 1.4M | $323M | 1.0% | $80.67 | +165.73% | 8 qtrssince 2019-Q2 | Decreased 0 |
AZENTA INC | 3.9M | $317.5M | 1.0% | $34.84 | +127.45% | 5 qtrssince 2020-Q1 | Increased 49 |
BIO-TECHNE CORP | 826,437 | $315.6M | 1.0% | $79.12 | +15.51% | 2 qtrssince 2020-Q4 | Increased 55 |
BJ'S WHOLESALE CLUB HOLDINGS | 6.8M | $304.9M | 1.0% | $26.58 | +68.84% | 8 qtrssince 2019-Q2 | Decreased 0 |
ABIOMED INC | 937,156 | $298.7M | 1.0% | — | — | 10 qtrssince 2018-Q4 | Increased 64 |
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC manages $30.9B across 367 positions as of Q1 2021. Top holdings: TSM (4.0%), SPY (1.8%), BWXT (1.6%). Fund DNA: Steady Compounder. HoldingsIntel Rating: 2.5/5.0.
Active quarter - 34 new positions, 23 exits, 151 increased. Top move: ABMD (INCREASED, conviction 64). Portfolio: $30.9B across 367 positions.
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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