Genedx Holdings Corp. has 11 Schedule 13D or 13G filings on record since 2025-07-30. 4 holders' latest filing reports 5% or more of class a common stock, par value $0.0001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| CMLS Holdings LLC | 17.9% | 537,285 | SCHEDULE 13D/A, 2026-05-22 | 2026-05-20 |
| The Goldman Sachs Group, Inc. | 5.8% | 1,733,592 | SCHEDULE 13G, 2026-08-11 | 2026-06-30 |
| BlackRock, Inc. | 5.5% | 1,622,518 | SCHEDULE 13G, 2026-07-28 | 2026-06-30 |
| ARK Investment Management LLC | 5.33% | 1,581,810 | SCHEDULE 13G/A, 2026-08-07 | 2026-07-31 |
| William Blair Investment Management, LLC | 4.3% | 1,235,681 | SCHEDULE 13G/A, 2025-11-12 | 2025-09-30 |
| Summit Partners Public Asset Management, LLC | 3.04% | 867,265 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| Fmr LLC | 0.6% | 163,324 | SCHEDULE 13G/A, 2025-08-06 | 2025-06-30 |
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-30 | William Blair Investment Management, LLC | 5.7% | SCHEDULE 13G |
| 2025-08-06 | Fmr LLC | 0.6% | SCHEDULE 13G/A |
| 2025-08-14 | Summit Partners Public Asset Management, LLC | 3.04% | SCHEDULE 13G/A |
| 2025-08-26 | CMLS Holdings LLC | 12.5% | SCHEDULE 13D/A |
| 2025-11-12 | William Blair Investment Management, LLC | 4.3% | SCHEDULE 13G/A |
| 2026-05-11 | Cmls Holdings LLC | 16.7% | SCHEDULE 13D/A |
| 2026-05-15 | Cmls Holdings LLC | 17.9% | SCHEDULE 13D/A |
| 2026-05-22 | CMLS Holdings LLC | 17.9% | SCHEDULE 13D/A |
| 2026-07-28 | BlackRock, Inc. | 5.5% | SCHEDULE 13G |
| 2026-08-07 | ARK Investment Management LLC | 5.33% | SCHEDULE 13G/A |
| 2026-08-11 | The Goldman Sachs Group, Inc. | 5.8% | SCHEDULE 13G |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.