BLAIR WILLIAM & CO/IL
Institutional investor · Portfolio as of Q2 2025
Top Holdings1,824 positions
Stock | Shares | Value | Weight | Avg Buy | Est. P&L | Held | Conviction |
|---|---|---|---|---|---|---|---|
MICROSOFT CORP | 3.7M | $1.8B | 5.1% | $123.66 | +299.64% | 27 qtrssince 2018-Q4 | Decreased 0 |
AMAZON.COM INC | 6.1M | $1.3B | 3.7% | $113.46 | +96.81% | 27 qtrssince 2018-Q4 | Decreased 0 |
APPLE INC | 6M | $1.2B | 3.4% | $103.22 | +97.82% | 27 qtrssince 2018-Q4 | Decreased 0 |
NVIDIA CORP | 5.6M | $884.6M | 2.5% | $117.60 | +34.13% | 27 qtrssince 2018-Q4 | Increased 57 |
VISA INC-CLASS A SHARES | 2.1M | $735.3M | 2.0% | $133.30 | +163.77% | 27 qtrssince 2018-Q4 | Increased 55 |
JPMORGAN CHASE & CO | 2.3M | $675.4M | 1.9% | $105.52 | +168.26% | 27 qtrssince 2018-Q4 | Increased 50 |
IDEXX LABORATORIES INC | 1.1M | $579.5M | 1.6% | $189.63 | +180.18% | 27 qtrssince 2018-Q4 | Decreased 0 |
MASTERCARD INC - A | 1M | $566.1M | 1.6% | $200.68 | +173.08% | 27 qtrssince 2018-Q4 | Decreased 0 |
ALPHABET INC-CL C | 3.2M | $564.1M | 1.6% | $95.36 | +86.65% | 27 qtrssince 2018-Q4 | Decreased 0 |
COSTCO WHOLESALE CORP | 551,986 | $546.4M | 1.5% | $313.56 | +213.44% | 27 qtrssince 2018-Q4 | Increased 50 |
STATE STREET SPDR S&P 500 ETF TRUST CL USD INC | 859,665 | $531.1M | 1.5% | $325.26 | +87.97% | 27 qtrssince 2018-Q4 | Increased 50 |
ALPHABET INC-CL A | 2.5M | $445M | 1.2% | $101.46 | +75.68% | 27 qtrssince 2018-Q4 | Decreased 0 |
META PLATFORMS INC-CLASS A | 576,598 | $425.6M | 1.2% | $385.86 | +89.85% | 27 qtrssince 2018-Q4 | Increased 52 |
UBER TECHNOLOGIES INC | 4.3M | $403.4M | 1.1% | $51.69 | +77.08% | 25 qtrssince 2019-Q2 | Increased 50 |
PROGRESSIVE CORP | 1.5M | $401.7M | 1.1% | $90.99 | +172.59% | 27 qtrssince 2018-Q4 | Decreased 0 |
VEEVA SYSTEMS INC-CLASS A | 1.3M | $370M | 1.0% | $98.46 | +187.84% | 27 qtrssince 2018-Q4 | Decreased 0 |
STRYKER CORP | 924,257 | $365.7M | 1.0% | $180.55 | +116.47% | 27 qtrssince 2018-Q4 | Decreased 0 |
FISERV INC | 2.1M | $363.4M | 1.0% | $99.90 | +72.50% | 27 qtrssince 2018-Q4 | Increased 52 |
WATSCO INC | 806,656 | $356.2M | 1.0% | $178.99 | +137.25% | 27 qtrssince 2018-Q4 | Decreased 0 |
SERVICENOW INC | 327,788 | $337M | 0.9% | $88.42 | +131.25% | 27 qtrssince 2018-Q4 | Increased 44 |
BLAIR WILLIAM & CO/IL manages $36B across 1824 positions as of Q2 2025. Top holdings: MSFT (5.1%), AMZN (3.7%), AAPL (3.4%). Fund DNA: Balanced Allocator. HoldingsIntel Rating: 4.5/5.0.
Active quarter - 113 new positions, 90 exits, 662 increased. Top move: NVDA (INCREASED, conviction 57). Portfolio: $36.0B across 1824 positions.
Top holdings by portfolio weight
Portfolio allocation by GICS sector
Behavioral investing profile
Position Outcomes
Best and worst performing positions by estimated return
Top Winners
Top Losers
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