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, Q1 2026
Institutional positions in Syndax Pharmaceuticals Inc as of Mar 31, 2026. 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
- 247
- +20 vs. Q4 2025
- Shares held
- 99.4M
- +5.70M (+6.1%) vs. Q4 2025
- Total value
- $2.32B
- +$352.9M (+17.9%) vs. Q4 2025
- New holders
- 45
- 99 more added
- Sold out
- 25
- 68 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Acadian Asset Management LLC | 2,892 | $67.0K | 0.00% | −7,277−71.6% | Reduced |
| Larson Financial Group LLC | 2,594 | $60.6K | 0.00% | +224+9.5% | Added |
| Smartleaf Asset Management LLC | 2,579 | $58.0K | 0.00% | −80−3.0% | Reduced |
| Quantbot Technologies LP | 2,350 | $54.9K | 0.00% | +1,161+97.6% | Added |
| Advisor Group Holdings, Inc. | 2,260 | $52.8K | 0.00% | −352−13.5% | Reduced |
| MAI Capital Management | 2,161 | $50.5K | 0.00% | +1,132+110.0% | Added |
| The PNC Financial Services Group, Inc. | 2,086 | $48.7K | 0.00% | +7+0.3% | Added |
| GF Fund Management Co. Ltd. | 1,952 | $45.6K | 0.00% | +244+14.3% | Added |
| Allworth Financial LP | 1,686 | $39.4K | 0.00% | +557+49.3% | Added |
| Essential Partners LLC | 1,447 | $33.8K | 0.01% | −8−0.5% | Reduced |
| Nisa Investment Advisors, LLC | 1,133 | $26.5K | 0.00% | +21+1.9% | Added |
| EverSource Wealth Advisors, LLC | 1,015 | $23.7K | 0.00% | +28+2.8% | Added |
| Fifth Third Bancorp | 998 | $23.3K | 0.00% | +998 | New |
| Versant Capital Management, Inc | 844 | $19.7K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 791 | $18.5K | 0.00% | 00.0% | Unchanged |
| Hickory Point Bank & Trust | 750 | $17.5K | 0.01% | +750 | New |
| Kemnay Advisory Services Inc. | 717 | $16.7K | 0.00% | +717 | New |
| Sterling Capital Management LLC | 710 | $16.6K | 0.00% | −147−17.2% | Reduced |
| Jones Financial Companies LLLP | 589 | $13.8K | 0.00% | +314+114.2% | Added |
| Farther Finance Advisors, LLC | 578 | $13.8K | 0.00% | +37+6.8% | Added |
| SRS Capital Advisors, Inc. | 585 | $13.6K | 0.00% | +268+84.5% | Added |
| Walleye Trading LLC | 416 | $9.72K | 0.00% | +416 | New |
| GAMMA Investing LLC | 392 | $9.16K | 0.00% | +112+40.0% | Added |
| Optiver Holding B.V. | 343 | $8.01K | 0.00% | +175+104.2% | Added |
| Steward Partners Investment Advisory, LLC | 331 | $7.73K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 295 | $6.89K | 0.00% | +170+136.0% | Added |
| True Wealth Design, LLC | 261 | $6.10K | 0.00% | 00.0% | Unchanged |
| Sunbelt Securities, Inc. | 260 | $6.07K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 177 | $4.13K | 0.00% | −154−46.5% | Reduced |
| Root Financial Partners, LLC | 171 | $4.00K | 0.00% | +171 | New |
| Brown Brothers Harriman & Co | 128 | $2.99K | 0.00% | 00.0% | Unchanged |
| Wealth Preservation Advisors, LLC | 104 | $2.43K | 0.00% | +104 | New |
| Avion Wealth | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 82 | $1.92K | 0.00% | +27+49.1% | Added |
| Stone House Investment Management, LLC | 78 | $1.82K | 0.00% | +78 | New |
| Northwestern Mutual Wealth Management Co | 74 | $1.73K | 0.00% | +74 | New |
| Massmutual Trust Co FSB | 71 | $1.66K | 0.00% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 59 | $1.38K | 0.00% | +50+555.6% | Added |
| Assetmark, Inc | 40 | $934 | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 23 | $537 | 0.00% | +23 | New |
| Financial Consulate, Inc | 15 | $351 | 0.00% | +15 | New |
| JPL Wealth Management, LLC | 5 | $117 | 0.00% | +5 | New |
| Keating Financial Advisory Services, Inc. | 4 | $93 | 0.00% | +4 | New |
| Quadrant Capital Group LLC | 3 | $71 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 2 | $47 | 0.00% | −201−99.0% | Reduced |
| Hughes Financial Services, LLC | 2 | $47 | 0.00% | +2 | New |
| Covestor Ltd | 8 | $0 | 0.00% | 00.0% | Unchanged |
| Eventide Asset Management, LLC | 0 | $0 | 0.00% | −1,238,196−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −632,752−100.0% | Sold out |
| Jump Financial, LLC | 0 | $0 | 0.00% | −163,915−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −155,916−100.0% | Sold out |
| Voss Capital, LLC | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −101,553−100.0% | Sold out |
| Ishara Investments LP | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −72,703−100.0% | Sold out |
| Simplify Asset Management Inc. | 0 | $0 | 0.00% | −54,715−100.0% | Sold out |
| DekaBank Deutsche Girozentrale | 0 | $0 | 0.00% | −28,300−100.0% | Sold out |
| Dimensional Fund Advisors LP | 0 | $0 | 0.00% | −28,312−100.0% | Sold out |
| Verition Fund Management LLC | 0 | $0 | 0.00% | −18,460−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −15,064−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −14,140−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −13,921−100.0% | Sold out |
| Group One Trading, L.P. | 0 | $0 | 0.00% | −11,792−100.0% | Sold out |
| Inceptionr LLC | 0 | $0 | 0.00% | −10,747−100.0% | Sold out |
| Quarry LP | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Cape Investment Advisory, Inc. | 0 | $0 | 0.00% | −4,663−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −2,677−100.0% | Sold out |
| Jefferies Financial Group Inc. | 0 | $0 | 0.00% | −413−100.0% | Sold out |
| C M Bidwell & Associates Ltd | 0 | $0 | 0.00% | −308−100.0% | Sold out |
| Daiwa Securities Group Inc. | 0 | $0 | 0.00% | −244−100.0% | Sold out |
| Bellevue Asset Management, LLC | 0 | $0 | 0.00% | −79−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −35−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |