Who owns GeneDx Holdings (WGS)
Which tracked institutional funds hold WGS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See WGS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
Conviction spread
WGS’s largest tracked holder by dollar value, Corvex Management LP, sizes it at 10.2% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 10.2pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in WGS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, we do not read how tracked institutions changed their WGS positions: many holders could not be matched across the two filings, most often because the security’s identifier changed and our mapping is incomplete, or because funds are still filing for the newer quarter. Over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Corvex Management LP added | 4,784,570 | $328M | 15.5% | 2026-Q2 |
| Casdin Capital, LLC added | 3,707,164 | $254M | 12.0% | 2026-Q2 |
| BlackRock, Inc. added | 1,706,239 | $117M | 5.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 1,669,441 | $115M | 5.4% | 2026-Q2 |
| ARK Investment Management LLC added | 1,610,189 | $111M | 5.2% | 2026-Q2 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 1,400,653 | $96M | 4.5% | 2026-Q2 |
| MORGAN STANLEY added | 988,297 | $68M | 3.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 879,003 | $60M | 2.8% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 865,462 | $59M | 2.8% | 2026-Q2 |
| First Light Asset Management, LLC added | 783,923 | $54M | 2.5% | 2026-Q2 |
| Deep Track Capital, LP new | 700,000 | $48M | 2.3% | 2026-Q2 |
| Sumitomo Mitsui Trust Group, Inc. added | 666,581 | $46M | 2.2% | 2026-Q2 |
| Amova Asset Management Americas, Inc. added | 666,581 | $46M | 2.2% | 2026-Q2 |
| Zweig-DiMenna Associates LLC trimmed | 571,950 | $39M | 1.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC added | 552,125 | $38M | 1.8% | 2026-Q2 |
| STATE STREET CORP added | 527,815 | $36M | 1.7% | 2026-Q2 |
| GAGNON SECURITIES LLC added | 524,865 | $36M | 1.7% | 2026-Q2 |
| Aberdeen Group plc added | 457,201 | $31M | 1.5% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP added | 347,927 | $24M | 1.1% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ added | 346,211 | $24M | 1.1% | 2026-Q2 |
| Assenagon Asset Management S.A. added | 303,433 | $21M | 1.0% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 280,938 | $19M | 0.9% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 280,619 | $19M | 0.9% | 2026-Q2 |
| NORGES BANK added | 273,100 | $19M | 0.9% | 2026-Q2 |
| EVENTIDE ASSET MANAGEMENT, LLC trimmed | 269,542 | $19M | 0.9% | 2026-Q2 |
| UBS Group AG added | 208,663 | $14M | 0.7% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC added | 207,664 | $14M | 0.7% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 204,592 | $14M | 0.7% | 2026-Q2 |
| ASHFORD CAPITAL MANAGEMENT INC added | 201,986 | $14M | 0.7% | 2026-Q2 |
| Portolan Capital Management, LLC added | 200,315 | $14M | 0.6% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC added | 197,578 | $14M | 0.6% | 2026-Q2 |
| Alamea Verwaltungs GmbH | 185,989 | $13M | 0.6% | 2026-Q2 |
| NORTHERN TRUST CORP added | 183,841 | $13M | 0.6% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 177,937 | $12M | 0.6% | 2026-Q2 |
| Gagnon Advisors, LLC added | 177,870 | $12M | 0.6% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC added | 155,575 | $11M | 0.5% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO added | 152,865 | $10M | 0.5% | 2026-Q2 |
| Rockefeller Capital Management L.P. added | 151,164 | $10M | 0.5% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 142,315 | $10M | 0.5% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND added | 141,500 | $10M | 0.5% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 123,690 | $8M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC trimmed | 123,418 | $8M | 0.4% | 2026-Q2 |
| SILVERARC CAPITAL MANAGEMENT, LLC new | 122,269 | $8M | 0.4% | 2026-Q2 |
| ROYCE & ASSOCIATES LP trimmed | 112,136 | $8M | 0.4% | 2026-Q2 |
| TUDOR INVESTMENT CORP ET AL added | 108,839 | $7M | 0.4% | 2026-Q2 |
| FRED ALGER MANAGEMENT, LLC trimmed | 108,527 | $7M | 0.4% | 2026-Q2 |
| Science & Technology Partners, L.P. trimmed | 106,387 | $7M | 0.3% | 2026-Q2 |
| Point72 Asset Management, L.P. added | 97,300 | $7M | 0.3% | 2026-Q2 |
| BARCLAYS PLC added | 97,234 | $7M | 0.3% | 2026-Q2 |
| TORONTO DOMINION BANK trimmed | 88,158 | $6M | 0.3% | 2026-Q2 |
| Prosight Management, LP trimmed | 85,500 | $6M | 0.3% | 2026-Q2 |
| Pentwater Capital Management LP added | 82,500 | $6M | 0.3% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 77,305 | $5M | 0.2% | 2026-Q2 |
| ARDSLEY ADVISORY PARTNERS LP trimmed | 75,000 | $5M | 0.2% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 69,169 | $5M | 0.2% | 2026-Q2 |
| Walleye Capital LLC added | 67,900 | $5M | 0.2% | 2026-Q2 |
| Legal Advantage Investments, Inc. added | 67,045 | $5M | 0.2% | 2026-Q2 |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd added | 66,216 | $5M | 0.2% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 62,028 | $4M | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 54,387 | $4M | 0.2% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 54,336 | $4M | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 53,894 | $4M | 0.2% | 2026-Q2 |
| Quantinno Capital Management LP added | 53,454 | $4M | 0.2% | 2026-Q2 |
| Jefferies Financial Group Inc. new | 49,800 | $3M | 0.2% | 2026-Q2 |
| Meridiem Capital Partners LP trimmed | 46,764 | $3M | 0.2% | 2026-Q2 |
| NIA IMPACT ADVISORS, LLC added | 46,731 | $3M | 0.2% | 2026-Q2 |
| Nuveen, LLC added | 46,158 | $3M | 0.1% | 2026-Q2 |
| EFG International AG trimmed | 44,952 | $3M | 0.1% | 2026-Q2 |
| Corient Private Wealth LP new | 44,658 | $3M | 0.1% | 2026-Q2 |
| Kovack Advisors, Inc. added | 43,092 | $3M | 0.1% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC trimmed | 43,041 | $3M | 0.1% | 2026-Q2 |
| Slow Capital, Inc. added | 42,500 | $3M | 0.1% | 2026-Q2 |
| Swiss National Bank | 40,000 | $3M | 0.1% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 38,877 | $3M | 0.1% | 2026-Q2 |
| RBF Capital, LLC | 37,340 | $3M | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. added | 36,939 | $3M | 0.1% | 2026-Q2 |
| Longaeva Partners L.P. new | 34,863 | $2M | 0.1% | 2026-Q2 |
| One Capital Management, LLC | 33,306 | $2M | 0.1% | 2026-Q2 |
| FORA Capital, LLC added | 33,225 | $2M | 0.1% | 2026-Q2 |
| LAZARD ASSET MANAGEMENT LLC trimmed | 32,852 | $2M | 0.1% | 2026-Q2 |
| Vestmark Advisory Solutions, Inc. added | 32,091 | $2M | 0.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC added | 29,172 | $2M | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN trimmed | 29,138 | $2M | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 28,891 | $2M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP added | 28,172 | $2M | 0.1% | 2026-Q2 |
| Y-Intercept (Hong Kong) Ltd added | 27,521 | $2M | 0.1% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 25,183 | $2M | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP new | 25,174 | $2M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 21,935 | $2M | 0.1% | 2026-Q2 |
| ALGERT GLOBAL LLC added | 21,932 | $2M | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 21,880 | $2M | 0.1% | 2026-Q2 |
| Quadrature Capital Ltd added | 20,422 | $1M | 0.1% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. | 20,050 | $1M | 0.1% | 2026-Q2 |
| Invesco Ltd. trimmed | 19,996 | $1M | 0.1% | 2026-Q2 |
| Legal & General Group Plc added | 17,792 | $1M | 0.1% | 2026-Q2 |
| Moody Aldrich Partners LLC new | 15,553 | $1M | 0.1% | 2026-Q2 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 14,281 | $980K | 0.0% | 2026-Q2 |
| DARK FOREST CAPITAL MANAGEMENT LP trimmed | 13,481 | $925K | 0.0% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd | 13,294 | $913K | 0.0% | 2026-Q2 |
| IMC-Chicago, LLC added | 12,794 | $878K | 0.0% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.