Syndax Pharmaceuticals Inc
SNDX- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001395937
In the last 90 days, Syndax Pharmaceuticals Inc insiders filed 0 open-market purchases and 1 sale; 242 institutions reported holding it in 13F filings for Q2 2026, worth $2.36B in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Syndax Pharmaceuticals Inc as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 230
- +7 vs. Q3 2025
- Shares held
- 100.0M
- −831.4K (−0.8%) vs. Q3 2025
- Total value
- $2.10B
- +$549.0M (+35.4%) vs. Q3 2025
- New holders
- 34
- 83 more added
- Sold out
- 27
- 80 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting SNDX on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 242 | $2.36B |
| Q1 2026 | 247 | $2.32B |
| Q4 2025 | 230 | $2.10B |
| Q3 2025 | 227 | $1.56B |
| Q2 2025 | 217 | $952.6M |
| Q1 2025 | 219 | $1.24B |
| Q4 2024 | 216 | $1.30B |
| Q3 2024 | 210 | $1.71B |
| Q2 2024 | 196 | $1.79B |
| Q1 2024 | 189 | $2.15B |
| Q4 2023 | 177 | $1.92B |
| Q3 2023 | 175 | $1.03B |
| Q2 2023 | 166 | $1.48B |
| Q1 2023 | 163 | $1.54B |
| Q4 2022 | 160 | $1.82B |
| Q3 2022 | 139 | $1.44B |
| Q2 2022 | 121 | $1.06B |
| Q1 2022 | 136 | $948.4M |
| Q4 2021 | 132 | $1.15B |
| Q3 2021 | 123 | $938.0M |
| Q2 2021 | 115 | $861.9M |
| Q1 2021 | 130 | $1.08B |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sterling Capital Management LLC | 857 | $18.0K | 0.00% | +271+46.2% | Added |
| Versant Capital Management, Inc | 844 | $17.7K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 791 | $16.6K | 0.00% | +740+1,451.0% | Added |
| Comerica Bank | 719 | $15.1K | 0.00% | 00.0% | Unchanged |
| Farther Finance Advisors, LLC | 541 | $11.4K | 0.00% | +504+1,362.2% | Added |
| Rockefeller Capital Management L.P. | 472 | $9.92K | 0.00% | +472 | New |
| Jefferies Financial Group Inc. | 413 | $8.68K | 0.00% | −8,587−95.4% | Reduced |
| Truvestments Capital LLC | 331 | $6.95K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 331 | $6.95K | 0.00% | +100+43.3% | Added |
| SRS Capital Advisors, Inc. | 317 | $6.66K | 0.00% | −4,580−93.5% | Reduced |
| C M Bidwell & Associates Ltd | 308 | $6.47K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 280 | $5.88K | 0.00% | +95+51.4% | Added |
| Jones Financial Companies LLLP | 275 | $5.78K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 269 | $5.64K | 0.00% | +111+70.3% | Added |
| True Wealth Design, LLC | 261 | $5.48K | 0.00% | +52+24.9% | Added |
| Sunbelt Securities, Inc. | 260 | $5.46K | 0.00% | +30+13.0% | Added |
| Daiwa Securities Group Inc. | 244 | $5.00K | 0.00% | −70−22.3% | Reduced |
| SBI Securities Co., Ltd. | 203 | $4.26K | 0.00% | +1+0.5% | Added |
| Optiver Holding B.V. | 168 | $3.53K | 0.00% | −551−76.6% | Reduced |
| Brown Brothers Harriman & Co | 128 | $2.69K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 125 | $2.63K | 0.00% | +30+31.6% | Added |
| Avion Wealth | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 79 | $1.66K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 71 | $1.49K | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 55 | $1.16K | 0.00% | +55 | New |
| Assetmark, Inc | 40 | $840 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 35 | $736 | 0.00% | −53−60.2% | Reduced |
| Basecamp Wealth Advisors LLC | 9 | $189 | 0.00% | +9 | New |
| Quadrant Capital Group LLC | 3 | $64 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 8 | $0 | 0.00% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −3,311,963−100.0% | Sold out |
| Zimmer Partners, LP | 0 | $0 | 0.00% | −383,100−100.0% | Sold out |
| Ikarian Capital, LLC | 0 | $0 | 0.00% | −333,733−100.0% | Sold out |
| Boothbay Fund Management, LLC | 0 | $0 | 0.00% | −261,933−100.0% | Sold out |
| Marshall Wace, LLP | 0 | $0 | 0.00% | −233,973−100.0% | Sold out |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −200,000−100.0% | Sold out |
| Macquarie Group Ltd | 0 | $0 | 0.00% | −180,000−100.0% | Sold out |
| Keybank National Association | 0 | $0 | 0.00% | −150,000−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −148,139−100.0% | Sold out |
| Schroder Investment Management Group | 0 | $0 | 0.00% | −123,404−100.0% | Sold out |
| Exome Asset Management LLC | 0 | $0 | 0.00% | −117,783−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −48,246−100.0% | Sold out |
| Stonepine Capital Management, LLC | 0 | $0 | 0.00% | −37,200−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −32,739−100.0% | Sold out |
| Phoenix Holdings Ltd. | 0 | $0 | 0.00% | −31,740−100.0% | Sold out |
| Scientech Research LLC | 0 | $0 | 0.00% | −30,875−100.0% | Sold out |
| Cinctive Capital Management LP | 0 | $0 | 0.00% | −30,440−100.0% | Sold out |
| Concentric Capital Strategies, LP | 0 | $0 | 0.00% | −21,944−100.0% | Sold out |
| Allianz Asset Management GmbH | 0 | $0 | 0.00% | −15,200−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −10,906−100.0% | Sold out |
| Prudential Financial Inc | 0 | $0 | 0.00% | −10,395−100.0% | Sold out |
| Clear Street Markets LLC | 0 | $0 | 0.00% | −688−100.0% | Sold out |
| Principal Securities, Inc. | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Washington Trust Advisors, Inc. | 0 | $0 | 0.00% | −209−100.0% | Sold out |
| Crowley Wealth Management, Inc. | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −47−100.0% | Sold out |
| Parkside Financial Bank & Trust | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | – | – | – | – | Not filed |
| Point72 Hong Kong Ltd | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |
| Corton Capital Inc. | – | – | – | – | Not filed |