Genedx Holdings Corp.: which funds bought and sold
Institutions that bought and sold Genedx Holdings shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 137 institutions that filed 13F reports for both quarters added to or opened positions in Genedx Holdings, and 127 cut or closed them. Together they added a net 369K shares, +1.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 133K shares (−0.9%); index fund managers were net buyers of 289K shares (+7.0%). 53 opened a new position and 69 sold out entirely.
Bought, Q2 2026 137 institutions, 53 of them new holders Sold, Q2 2026 127 institutions, 69 of them sold out
Net change, all compared +369K shares (+1.2%)
Net change, active managers −133K shares (−0.9%), 25 bought, 34 sold
Buyers versus sellers
137 bought 24 127 sold
Active managers and hedge funds 25 bought · 34 sold · −133K
Index fund managers 10 bought · 0 sold · +289K
Other institutions 102 bought · 93 sold · +212K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Corvex Management LP Hedge fund | +1.6M +48.2% | 4.8M | $328M |
| Casdin Capital, LLC Hedge fund | +700K +23.3% | 3.7M | $254M |
| Deep Track Capital, LP Hedge fund | +700K New position | 700K | $48.1M |
| William Blair Investment Management, LLC Active manager | +625K +80.7% | 1.4M | $96.2M |
| First Light Asset Management, LLC | +541K +222.7% | 784K | $53.8M |
| Assenagon Asset Management S.A. | +512K +537.9% | 607K | $41.7M |
| Morgan Stanley | +456K +85.7% | 988K | $67.8M |
| Goldman Sachs Group Inc | +334K +25.1% | 1.7M | $115M |
| ARK Investment Management LLC Active manager | +286K +21.6% | 1.6M | $111M |
| Aberdeen Group PLC | +227K +98.7% | 457K | $31.4M |
| Gagnon Securities LLC | +222K +73.1% | 525K | $36M |
| Citadel Advisors LLC Hedge fund | +218K +33.7% | 865K | $59.4M |
| Jane Street Group, LLC | +205K New position | 205K | $14M |
| UBS Group AG | +158K +310.6% | 209K | $14.3M |
| Blackrock, Inc. Index funds | +156K +10.0% | 1.7M | $117M |
| Healthcare Of Ontario Pension Plan Trust Fund | +142K New position | 142K | $9.7M |
| Silverarc Capital Management, LLC | +122K New position | 122K | $8.4M |
| BNP Paribas Financial Markets | +116K +1502.6% | 124K | $8.5M |
| Bank Of America Corp | +112K +47.6% | 346K | $23.8M |
| Portolan Capital Management, LLC | +98K +95.3% | 200K | $13.8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Corvex Management LP Hedge fund | +1.6M +48.2% | 4.8M | $328M |
| Casdin Capital, LLC Hedge fund | +700K +23.3% | 3.7M | $254M |
| Deep Track Capital, LP Hedge fund | +700K New position | 700K | $48.1M |
| William Blair Investment Management, LLC Active manager | +625K +80.7% | 1.4M | $96.2M |
| ARK Investment Management LLC Active manager | +286K +21.6% | 1.6M | $111M |
| Citadel Advisors LLC Hedge fund | +218K +33.7% | 865K | $59.4M |
| Pentwater Capital Management LP Hedge fund | +83K New position | 83K | $5.7M |
| Tudor Investment Corp Et Al Hedge fund | +75K +224.5% | 109K | $7.5M |
| Walleye Capital LLC Hedge fund | +68K New position | 68K | $4.7M |
| Exoduspoint Capital Management, LP Hedge fund | +25K New position | 25K | $1.7M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Westfield Capital Management Co LP Active manager | −1.4M Sold out | 0 | — |
| Invesco Ltd. | −520K −96.3% | 20K | $1.4M |
| Raymond James Financial Inc | −487K −79.8% | 123K | $8.5M |
| Summit Partners Public Asset Management, LLC | −479K Sold out | 0 | — |
| Prosight Management, LP | −438K −83.7% | 86K | $5.9M |
| Massachusetts Financial Services Co Active manager | −350K −97.5% | 9,126 | $626,500 |
| Franklin Resources Inc Active manager | −326K −53.7% | 281K | $19.3M |
| Capital International Investors Active manager | −325K Sold out | 0 | — |
| FMR LLC Active manager | −288K −97.6% | 7,132 | $489,625 |
| Oberweis Asset Management Inc/ Active manager | −261K Sold out | 0 | — |
| Bank Of New York Mellon Corp | −253K −80.3% | 62K | $4.3M |
| Vestal Point Capital, LP Hedge fund | −250K Sold out | 0 | — |
| Nomura Asset Management International Inc. | −221K Sold out | 0 | — |
| RA Capital Management, L.P. Hedge fund | −210K Sold out | 0 | — |
| UBS Am, A Distinct Business Unit Of UBS Asset Management Americas LLC | −195K −78.2% | 54K | $3.7M |
| Eventide Asset Management, LLC | −189K −41.3% | 270K | $18.5M |
| Qube Research & Technologies Ltd Hedge fund | −185K Sold out | 0 | — |
| Renaissance Technologies LLC Hedge fund | −154K Sold out | 0 | — |
| Capital Research Global Investors Active manager | −151K Sold out | 0 | — |
| Science & Technology Partners, L.P. | −135K −55.9% | 106K | $7.3M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Westfield Capital Management Co LP Active manager | −1.4M Sold out | 0 | — |
| Massachusetts Financial Services Co Active manager | −350K −97.5% | 9,126 | $626,500 |
| Franklin Resources Inc Active manager | −326K −53.7% | 281K | $19.3M |
| Capital International Investors Active manager | −325K Sold out | 0 | — |
| FMR LLC Active manager | −288K −97.6% | 7,132 | $489,625 |
| Oberweis Asset Management Inc/ Active manager | −261K Sold out | 0 | — |
| Vestal Point Capital, LP Hedge fund | −250K Sold out | 0 | — |
| RA Capital Management, L.P. Hedge fund | −210K Sold out | 0 | — |
| Qube Research & Technologies Ltd Hedge fund | −185K Sold out | 0 | — |
| Renaissance Technologies LLC Hedge fund | −154K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Deep Track Capital, LPHedge fund | 700K | $48.1M |
| Jane Street Group, LLC | 205K | $14M |
| Healthcare Of Ontario Pension Plan Trust Fund | 142K | $9.7M |
| Silverarc Capital Management, LLC | 122K | $8.4M |
| HRT Financial LP | 92K | $6.3M |
| Toronto Dominion Bank | 88K | $6.1M |
| Pentwater Capital Management LPHedge fund | 83K | $5.7M |
| Walleye Capital LLCHedge fund | 68K | $4.7M |
| Jefferies Financial Group Inc. | 50K | $3.4M |
| Corient Private Wealth LP | 45K | $3.1M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Westfield Capital Management Co LPActive manager | 1.4M | $87.9M |
| Summit Partners Public Asset Management, LLC | 479K | $30.8M |
| Capital International InvestorsActive manager | 325K | $20.8M |
| Oberweis Asset Management Inc/Active manager | 261K | $16.8M |
| Vestal Point Capital, LPHedge fund | 250K | $16.1M |
| Nomura Asset Management International Inc. | 221K | $14.2M |
| RA Capital Management, L.P.Hedge fund | 210K | $13.5M |
| Qube Research & Technologies LtdHedge fund | 185K | $11.8M |
| Renaissance Technologies LLCHedge fund | 154K | $9.9M |
| Capital Research Global InvestorsActive manager | 151K | $9.7M |
Who holds the shares
- Institutions reporting
- 223
- Ten largest holders
- 57.7% of 13F-reported shares
- Index fund managers
- 13.8% of 13F-reported shares
- Active managers and hedge funds
- 46.3% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 25 | 34 | 9 | 23 | −133K | −0.9% |
| Index fund managers | 10 | 0 | 1 | 0 | +289K | +7.0% |
| Other institutions | 102 | 93 | 43 | 46 | +212K | +1.7% |