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Portfolio (Quarterly) Guide ↗

BLAIR WILLIAM & CO/IL

· CIK 0000902367
13F Portfolio $34.9B AUM 1,922 positions Filed May 8, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 155 New 708 Added 689 Reduced 100 Exited
Page 1 of 35  ·  689 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
1 MSFT MICROSOFT CORP Technology 3,498,110.0 $1.29B 3.71% -76K -2.1% $370.17 +2.4%
2 NVDA NVIDIA CORPORATION Technology 5,427,875.0 $946.6M 2.71% -66K -1.2% $174.40 +20.5%
3 GOOG ALPHABET INC Communication Services 3,035,765.0 $870.8M 2.50% -83K -2.7% $286.86 +28.0%
4 GOOGL ALPHABET INC Communication Services 2,436,117.0 $700.5M 2.01% -57K -2.3% $287.56 +27.9%
5 V VISA INC Financial Services 1,844,583.0 $557.5M 1.60% -85K -4.4% $302.24 +8.3%
6 SPY STATE STR SPDR S&P 500 ETF T Financial Services 845,294.0 $549.7M 1.57% -13K -1.5% $650.34 +14.8%
7 IDXX IDEXX LABS INC Healthcare 946,336.0 $531.7M 1.52% -55K -5.5% $561.89 -0.0%
8 MA MASTERCARD INCORPORATED Financial Services 923,405.0 $461.4M 1.32% -32K -3.3% $499.66 -2.0%
9 META META PLATFORMS INC Communication Services 721,720.0 $412.9M 1.18% -14K -2.0% $572.13 +0.9%
10 APH AMPHENOL CORP Technology 2,520,319.0 $318.4M 0.91% -134K -5.0% $126.35 +29.7%
11 IVV ISHARES TR 485,839.0 $317.4M 0.91% -3K -0.5% $653.21 +14.9%
12 WMT WALMART INC Consumer Defensive 2,374,282.0 $295.1M 0.85% -38K -1.6% $124.28 -5.7%
13 ICE INTERCONTINENTAL EXCHANGE IN Financial Services 1,593,628.0 $250.6M 0.72% -97K -5.7% $157.28 -14.9%
14 DHR DANAHER CORP DEL Healthcare 1,296,804.0 $245.9M 0.70% -76K -5.5% $189.60 -6.5%
15 PGR PROGRESSIVE CORP Financial Services 1,219,749.0 $241.8M 0.69% -187K -13.3% $198.24 +3.3%
16 UBER UBER TECHNOLOGIES INC Technology 3,299,596.0 $237.3M 0.68% -808K -19.7% $71.93 -0.4%
17 WSO WATSCO INC Industrials 582,700.0 $212.0M 0.61% -93K -13.7% $363.79 +10.2%
18 AXP AMERICAN EXPRESS CO Financial Services 693,767.0 $209.9M 0.60% -6K -0.9% $302.48 +11.8%
19 ISRG INTUITIVE SURGICAL INC Healthcare 425,228.0 $196.0M 0.56% -14K -3.2% $460.99 -11.8%
20 TDG TRANSDIGM GROUP INC Industrials 166,248.0 $192.7M 0.55% -4K -2.3% $1158.96 +14.7%
Page 1 of 35  ·  689 positions

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Technology 25.5%
Financial Services 17.1%
Industrials 15.0%
Healthcare 12.5%
Consumer Cyclical 8.5%
Communication Services 8.2%
Consumer Defensive 4.8%
Utilities 2.5%
Energy 2.5%
Basic Materials 2.1%