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Portfolio (Quarterly) Guide ↗

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

· CIK 0001644956
13F Portfolio $30.3B AUM 413 positions Filed May 8, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 47 New 150 Added 201 Reduced 47 Exited
Page 5 of 11  ·  201 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
81 GWRE GUIDEWIRE SOFTWARE INC Technology 341,501.0 $51.1M 0.17% -17K -4.7% $149.56 -15.0%
82 RSI RUSH STREET INTERACTIVE INC Consumer Cyclical 2,331,047.0 $50.7M 0.17% -227K -8.9% $21.75 +20.2%
83 CGNX COGNEX CORP Technology 1,016,463.0 $49.8M 0.17% -37K -3.5% $48.99 +27.4%
84 WGS GENEDX HOLDINGS CORP Healthcare 775,269.0 $49.8M 0.17% -34K -4.2% $64.22 -19.3%
85 KWR QUAKER HOUGHTON Basic Materials 388,406.0 $48.3M 0.16% -82K -17.4% $124.23 +15.3%
86 OSIS OSI SYSTEMS INC Technology 171,667.0 $45.6M 0.15% -20K -10.3% $265.51 -20.7%
87 TPG TPG INC Financial Services 1,112,187.0 $45.1M 0.15% -324K -22.5% $40.51 +1.7%
88 LPX LOUISIANA PAC CORP Basic Materials 596,108.0 $43.4M 0.14% -233K -28.1% $72.75 -3.7%
89 BE BLOOM ENERGY CORP Industrials 317,721.0 $43.0M 0.14% -30K -8.8% $135.49 +87.2%
90 PDFS PDF SOLUTIONS INC Technology 1,255,559.0 $41.1M 0.14% -103K -7.6% $32.71 +72.1%
91 RVLV REVOLVE GROUP INC Consumer Cyclical 1,766,423.0 $39.9M 0.13% -382K -17.8% $22.61 -13.6%
92 CCEP COCA-COLA EUROPACIFIC PARTNE Consumer Defensive 426,094.0 $38.6M 0.13% -22K -4.9% $90.67 +5.1%
93 HWC HANCOCK WHITNEY CORPORATION Financial Services 566,948.0 $36.1M 0.12% -68K -10.6% $63.59 +8.5%
94 IWF ISHARES TR 84,425.0 $36.0M 0.12% -27K -24.2% $426.40 -71.2%
95 AUGO AURA MINERALS INC Basic Materials 428,060.0 $34.9M 0.12% -68K -13.8% $81.60 -28.1%
96 BCO BRINKS CO Industrials 333,287.0 $34.5M 0.11% -1.2M -78.4% $103.63 -2.2%
97 PBF PBF ENERGY INC Energy 686,814.0 $32.7M 0.11% -159K -18.8% $47.62 -11.0%
98 THR THERMON GROUP HLDGS INC Industrials 647,539.0 $32.6M 0.11% -240K -27.0% $50.40 +21.3%
99 IDA IDACORP INC Utilities 222,487.0 $31.8M 0.10% -354K -61.4% $142.97 -3.4%
100 ACVA ACV AUCTIONS INC Consumer Cyclical 7,212,623.0 $30.6M 0.10% -3.7M -33.8% $4.24 +33.3%
Page 5 of 11  ·  201 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 36.8%
Industrials 12.9%
Healthcare 12.5%
Consumer Cyclical 9.9%
Financial Services 9.9%
Communication Services 5.1%
Consumer Defensive 4.4%
Basic Materials 4.3%
Energy 1.8%
Real Estate 1.3%