WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in WGS — GeneDx Holdings Corp.
CIK 1644956
CHICAGO, IL
Position in WGS
as of Mar 31, 2026
· filed May 8, 2026
Position Value
$49,787,775
-$55,458,077 QoQ
Shares Held
775,269
-4.2% QoQ
Ownership
2.61%
of shares outstanding
% of Portfolio
0.17%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2024
6 quarters on record
Voting authority
Sole 91.99194086181699.ToString("F0")%
Shared 0.ToString("F0")%
None 8.008059138183004.ToString("F0")%
Common Shares in WGS Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Mar 31, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $822,825,452 across 8 Diagnostics & Research names. WGS ranks #5 (6.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TWST |
Twist Bioscience Corp
|
5,269,718 | $250,416,999 | |
| 2 | A |
Agilent Technologies, Inc.
|
1,795,764 | $204,681,180 | |
| 3 | IDXX |
Idexx Laboratories Inc /De
|
351,621 | $197,572,323 | |
| 4 | GH |
Guardant Health, Inc.
|
951,114 | $87,854,400 | |
| 5 | WGS |
GeneDx Holdings Corp.
This page
|
775,269 | $49,787,775 | |
| 6 | VCYT |
Veracyte, Inc.
|
989,687 | $31,877,818 | |
| 7 | LH |
Labcorp Holdings Inc.
|
1,311 | $349,787 | |
| 8 | ICLR |
Icon PLC
|
2,577 | $285,170 |
All Filings in WGS
Export CSV
6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $49,787,775 | 775,269 | Shares | Sole | 2026-05-08 | |
| 2025-12-31 | $105,245,852 | 809,210 | Shares | Sole | 2026-02-09 | |
| 2025-09-30 | $131,457,668 | 1,220,138 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $150,594,718 | 1,631,402 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $105,302,722 | 1,188,988 | Shares | Sole | 2025-05-09 | |
| 2024-12-31 | $51,495,815 | 669,995 | Shares | Sole | 2025-02-10 | |
| No filing history on record for this holder in this stock. | ||||||