William Blair Investment Management, Llc - Significant Ownership

Signature - Title
Walter R. Randall, Jr. - Chief Compliance Officer
Location
Chicago, IL
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by William Blair Investment Management, Llc.

Significant Ownership of William Blair Investment Management, Llc

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
MRCY MERCURY SYSTEMS INC Common Stock 7.9% $218M -$31.4M 4.7M -12.6% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
BWIN Baldwin Insurance Group, Inc. Common Stock 7.3% $208M 4.91M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Dec 31, 2024
MEG Montrose Environmental Group, Inc. Common Stock 6.8% $43.1M $7.71M 2.32M +21.8% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
ACVA ACV Auctions Inc. Common Stock 6.6% $158M -$14.6M 11.1M -8.45% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
TWST Twist Bioscience Corp Common Stock 6.4% $138M $31M 3.81M +29.1% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
FOXF FOX FACTORY HOLDING CORP Common Stock 5.9% $51.9M -$10.6M 2.48M -17% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
WGS GeneDx Holdings Corp. Common Stock 5.7% $102M 1.63M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
DOCS Doximity, Inc. Common Stock 4.9% $329M 6.23M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Dec 31, 2024
FOLD AMICUS THERAPEUTICS, INC. Common Stock 4.9% $95.8M 14.8M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
CWAN Clearwater Analytics Holdings, Inc. Common Stock 4.8% $217M 9.41M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Dec 31, 2024
LOCO El Pollo Loco Holdings, Inc. Common Stock 4.8% $14.8M -$640K 1.44M -4.14% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
BCO BRINKS CO Common Stock 4.7% $176M -$32.4M 1.96M -15.5% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
ZIP ZIPRECRUITER, INC. Common Stock 4.6% $15.9M -$8.12M 3.65M -33.8% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
TBBB BBB FOODS INC Common Stock 4.3% $73.6M 2.64M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
NEOG NEOGEN CORP Common Stock 4.3% $61M 9.4M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
ADTN ADTRAN Holdings, Inc. Common Stock 4.2% $25M 3.35M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
GDEN GOLDEN ENTERTAINMENT, INC. Common Stock 3.6% $25M 999K WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Dec 31, 2024
LRN Stride, Inc. Common Stock 2.5% $169M -$210M 1.1M -55.4% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
RVLV Revolve Group, Inc. Common Stock 2.4% $19.7M -$49.8M 986K -71.7% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
FLYW Flywire Corp Common Stock 1.2% $14.2M 1.5M WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Mar 31, 2025
OEC Orion S.A. Common Stock 1.2% $7.57M -$32.1M 680K -80.9% WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025
NFE New Fortress Energy Inc. Common Stock 0% $395K 56.1K WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC Jun 30, 2025

Schedules 13D/G Reported by William Blair Investment Management, Llc:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Date Filed
* An asterisk sign (*) next to the price indicates that the price is likely invalid.