6 institutions reported holding $8.7M of SYNDAX PHARMACEUTICALS INC (SNDX) in SEC 13F filings for 2026-06-30. Largest institutional holders: Hennion & Walsh Asset Management, Inc. ($7.5M), Assenagon Asset Management S.A. ($912,371), Post Resch Tallon Group Inc. ($273,250), Versant Capital Management, Inc ($18,450), GAMMA Investing LLC ($9,116). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Hennion & Walsh Asset Management, Inc. | $7.5M | 342,883 | Added |
| 2 | Assenagon Asset Management S.A. | $912,371 | 41,737 | Hold |
| 3 | Post Resch Tallon Group Inc. | $273,250 | 12,500 | Hold |
| 4 | Versant Capital Management, Inc | $18,450 | 844 | Hold |
| 5 | GAMMA Investing LLC | $9,116 | 417 | Added |
| 6 | MassMutual Private Wealth & Trust, FSB | $1,552 | 71 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30