Who owns Syndax Pharmaceuticals, Inc.?
Institutional ownership of SNDX from SEC Form 13F filings across 155 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
155
13F holders
$1.35B
value, 2026 filers
70.4%
of shares outstanding (62.4M sh)
19
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30· % of fund = share of the manager's own book · % of co. = share of SNDX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.0M | $197.2M | 0.0% | 10.2% | +9.3% |
| 2 | GOLDMAN SACHS GROUP INC | 5.9M | $128.1M | 0.0% | 6.6% | +17.3% |
| 3 | BANK OF AMERICA CORP /DE/ | 4.0M | $88.4M | 0.0% | 4.6% | -4.8% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 3.9M | $85.9M | 0.0% | 4.4% | -48.6% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 2.6M | $56.5M | 0.0% | 2.9% | +19.8% |
| 6 | KINGDON CAPITAL MANAGEMENT, L.L.C. | 2.5M | $54.6M | 5.6% | 2.8% | 0.0% |
| 7 | FRANKLIN RESOURCES INC | 2.3M | $50.0M | 0.0% | 2.6% | +6.3% |
| 8 | MILLENNIUM MANAGEMENT LLC | 2.1M | $44.9M | 0.0% | 2.3% | +929.4% |
| 9 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.9M | $42.0M | 0.0% | 2.2% | +10.6% |
| 10 | UBS Group AG | 1.9M | $41.4M | 0.0% | 2.1% | +64.2% |
| 11 | BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1.8M | $39.1M | 0.0% | 2% | +3.3% |
| 12 | Candriam S.C.A. | 1.7M | $37.0M | 0.2% | 1.9% | +83.3% |
| 13 | TWO SIGMA INVESTMENTS, LP | 1.6M | $34.5M | 0.0% | 1.8% | -0.1% |
| 14 | Nuveen, LLC | 1.4M | $29.8M | 0.0% | 1.5% | -8.7% |
| 15 | Woodline Partners LP | 1.3M | $27.3M | 0.1% | 1.4% | -50.0% |
| 16 | D. E. Shaw & Co., Inc. | 1.2M | $27.1M | 0.0% | 1.4% | -22.6% |
| 17 | Catalio Capital Management, LP | 1.2M | $26.6M | 5.0% | 1.4% | +16.5% |
| 18 | SILVERARC CAPITAL MANAGEMENT, LLC | 1.2M | $26.5M | 2.8% | 1.4% | +36.6% |
| 19 | Bank of New York Mellon Corp | 1.0M | $22.7M | 0.0% | 1.2% | +3.5% |
| 20 | NORTHERN TRUST CORP | 845,537 | $18.5M | 0.0% | 1% | +11.9% |
| 21 | Sixth Street Partners Management Company, L.P.NEW | 814,303 | $17.8M | 3.1% | 0.9% | new |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 814,303 | $17.8M | 0.0% | 0.9% | +13.9% |
| 23 | VANGUARD FIDUCIARY TRUST CO | 633,509 | $13.8M | 0.0% | 0.7% | +5.5% |
| 24 | Verition Fund Management LLCNEW | 609,878 | $13.3M | 0.1% | 0.7% | new |
| 25 | MORGAN STANLEY | 588,979 | $12.9M | 0.0% | 0.7% | -34.1% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.