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Portfolio (Quarterly) Guide ↗

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

· CIK 0001644956
13F Portfolio $33.3B AUM 403 positions Filed Aug 12, 2026 EDGAR ↗ ← All Funds
Q2 2026 Q1 2026 · All 47 New 100 Added 228 Reduced 57 Exited
Page 2 of 12  ·  228 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
21 TWST TWIST BIOSCIENCE CORP Healthcare 2,174,594.0 $223.7M 0.67% -3.1M -58.7% $102.88 +41.5%
22 UNH UNITEDHEALTH GROUP INC Healthcare 523,387.0 $217.5M 0.65% -150K -22.3% $415.63 -6.1%
23 CRS CARPENTER TECHNOLOGY CORP Industrials 332,607.0 $205.2M 0.62% -18K -5.2% $616.84 -20.2%
24 NVT NVENT ELEC PLC Industrials 1,167,763.0 $198.1M 0.60% -66K -5.4% $169.61 -10.4%
25 HALO HALOZYME THERAPEUTICS INC Healthcare 2,511,050.0 $196.5M 0.59% -15K -0.6% $78.27 +38.2%
26 TLN TALEN ENERGY CORP Utilities 497,660.0 $191.2M 0.57% -28K -5.2% $384.26 -18.2%
27 TRU TRANSUNION Industrials 2,648,744.0 $191.1M 0.57% -242K -8.4% $72.14 +17.3%
28 STRL STERLING INFRASTRUCTURE INC Industrials 223,697.0 $187.8M 0.56% -100K -30.8% $839.36 -38.4%
29 COST COSTCO WHOLESALE CORPORATION Consumer Defensive 199,355.0 $186.5M 0.56% -103K -34.1% $935.47 +1.3%
30 CHRW C H ROBINSON WORLDWIDE IN Industrials 978,297.0 $184.3M 0.55% -63K -6.1% $188.34 -24.8%
31 BWXT BWX TECHNOLOGIES INC Industrials 941,233.0 $183.2M 0.55% -41K -4.1% $194.65 -19.5%
32 AKAM AKAMAI TECHNOLOGIES INC Technology 1,535,467.0 $181.5M 0.55% -84K -5.2% $118.21 -6.6%
33 THE BALDWIN INSURANCE GRP IN 6,732,965.0 $179.0M 0.54% -62K -0.9% $26.58
34 LSCC LATTICE SEMICONDUCTOR CORP Technology 1,160,417.0 $177.5M 0.53% -883K -43.2% $152.96 -23.1%
35 MDGL MADRIGAL PHARMACEUTICALS INC Healthcare 324,123.0 $174.0M 0.52% -16K -4.8% $536.95 -3.8%
36 EVEREST GROUP LTD 479,877.0 $171.4M 0.52% -26K -5.2% $357.23
37 A AGILENT TECHNOLOGIES INC Healthcare 1,287,265.0 $171.0M 0.51% -508K -28.3% $132.83 +19.6%
38 ORLY OREILLY AUTOMOTIVE INC Consumer Cyclical 1,855,002.0 $170.8M 0.51% -355K -16.1% $92.09 -3.2%
39 IDXX IDEXX LABS INC Healthcare 298,154.0 $157.0M 0.47% -53K -15.2% $526.44 +5.8%
40 NOW SERVICENOW INC Technology 1,551,192.0 $154.0M 0.46% -820K -34.6% $99.28 +29.4%
Page 2 of 12  ·  228 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 38.4%
Healthcare 14.2%
Industrials 13.5%
Financial Services 8.6%
Consumer Cyclical 7.7%
Communication Services 5.8%
Consumer Defensive 4.0%
Basic Materials 3.6%
Energy 2.4%
Utilities 1.0%