WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
Position in WGS — GeneDx Holdings Corp.
CIK 1644956
CHICAGO, IL
Position in WGS
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$96,154,828
+$46,367,053 QoQ
Shares Held
1,400,653
+80.7% QoQ
Ownership
4.70%
of shares outstanding
% of Portfolio
0.29%
of 13F equity value
Holder Rank
#6
of 223 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority
Sole 91%
Shared 0%
None 9%
Common Shares in WGS Over Time
Shares Held
Position Value (USD)
Position in Diagnostics & Research
Healthcare · as of Jun 30, 2026WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $929,458,125 across 8 Diagnostics & Research names. WGS ranks #5 (10.3% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | TWST |
Twist Bioscience Corp
|
2,174,594 | $223,722,230 | |
| 2 | GH |
Guardant Health, Inc.
|
1,311,320 | $196,737,339 | |
| 3 | A |
Agilent Technologies, Inc.
|
1,287,265 | $170,987,409 | |
| 4 | IDXX |
Idexx Laboratories Inc /De
|
298,154 | $156,960,191 | |
| 5 | WGS |
GeneDx Holdings Corp.
This page
|
1,400,653 | $96,154,828 | |
| 6 | VCYT |
Veracyte, Inc.
|
1,431,596 | $84,077,633 | |
| 7 | ICLR |
Icon PLC
|
2,589 | $449,735 | |
| 8 | LH |
Labcorp Holdings Inc.
|
1,317 | $368,760 |
All Filings in WGS
Export CSV
7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $96,154,828 | 1,400,653 | Shares | Sole | 2026-08-12 | |
| 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. | ||||||