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 |
|---|---|---|---|---|---|
| Walleye Capital LLC | 384,973 | $8.99M | 0.06% | +360,768+1,490.5% | Added |
| Knott David M Jr | 422,000 | $9.86M | 5.87% | +7,000+1.7% | Added |
| Renaissance Technologies LLC | 498,200 | $11.6M | 0.02% | −46,600−8.6% | Reduced |
| Apis Capital Advisors, LLC | 550,000 | $12.8M | 1.98% | −174,000−24.0% | Reduced |
| Vanguard Fiduciary Trust Co | 600,517 | $14.0M | 0.00% | +600,517 | New |
| Citadel Advisors LLC | 630,942 | $14.7M | 0.01% | +446,939+242.9% | Added |
| Trails Edge Capital Partners, LP | 701,821 | $16.4M | 3.86% | +701,821 | New |
| Charles Schwab Investment Management Inc | 715,153 | $16.7M | 0.00% | −12,271−1.7% | Reduced |
| Sphera Funds Management Ltd. | 724,563 | $16.9M | 2.91% | −38,000−5.0% | Reduced |
| Northern Trust Corp | 755,719 | $17.7M | 0.00% | +26,798+3.7% | Added |
| Prosight Management, LP | 770,000 | $18.0M | 2.95% | +105,000+15.8% | Added |
| Palo Alto Investors LP | 864,986 | $20.2M | 3.09% | +70,479+8.9% | Added |
| Silverarc Capital Management, LLC | 888,987 | $20.8M | 2.45% | +246,088+38.3% | Added |
| Morgan Stanley | 893,933 | $20.9M | 0.00% | −181,568−16.9% | Reduced |
| Parkman Healthcare Partners LLC | 901,511 | $21.1M | 2.18% | +327,488+57.1% | Added |
| Candriam Luxembourg S.C.A. | 925,332 | $21.6M | 0.11% | 00.0% | Unchanged |
| Algert Global LLC | 928,568 | $21.7M | 0.33% | +480+0.1% | Added |
| OrbiMed Advisors LLC | 962,300 | $22.5M | 0.51% | +962,300 | New |
| AQR Capital Management LLC | 980,314 | $22.9M | 0.01% | +54,340+5.9% | Added |
| Ensign Peak Advisors, Inc | 990,969 | $23.1M | 0.04% | −607,575−38.0% | Reduced |
| Bank of New York Mellon Corp | 1,004,498 | $23.5M | 0.00% | −89,653−8.2% | Reduced |
| Catalio Capital Management, LP | 1,043,670 | $24.4M | 5.09% | −153,137−12.8% | Reduced |
| UBS Group AG | 1,153,662 | $26.9M | 0.00% | +437,443+61.1% | Added |
| StemPoint Capital LP | 1,215,743 | $28.4M | 5.46% | −123,636−9.2% | Reduced |
| Woodline Partners LP | 1,250,760 | $29.2M | 0.11% | +920.0% | Added |
| Aisling Capital Management LP | 1,316,806 | $30.8M | 6.46% | 00.0% | Unchanged |
| MPM Oncology Impact Management LP | 1,340,733 | $31.3M | 2.42% | +3,031+0.2% | Added |
| Nuveen, LLC | 1,494,645 | $34.9M | 0.01% | +11,643+0.8% | Added |
| Two Sigma Investments, LP | 1,579,596 | $36.9M | 0.03% | +432,660+37.7% | Added |
| D. E. Shaw & Co., Inc. | 1,601,896 | $37.4M | 0.03% | +382,287+31.3% | Added |
| Soleus Capital Management, L.P. | 1,726,908 | $40.3M | 1.63% | −520,202−23.1% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,732,541 | $40.5M | 0.05% | +356,860+25.9% | Added |
| Vanguard Portfolio Management LLC | 1,737,141 | $40.6M | 0.00% | +1,737,141 | New |
| Elmind Capital, LP | 1,855,000 | $43.3M | 12.30% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 1,985,547 | $46.4M | 0.08% | −2,896,506−59.3% | Reduced |
| Franklin Resources Inc | 2,150,079 | $50.2M | 0.01% | −271,587−11.2% | Reduced |
| Geode Capital Management, LLC | 2,157,058 | $50.4M | 0.00% | +66,126+3.2% | Added |
| Hood River Capital Management LLC | 2,354,285 | $55.0M | 0.55% | +37,732+1.6% | Added |
| Kingdon Capital Management, L.L.C. | 2,500,000 | $58.4M | 9.78% | +150,000+6.4% | Added |
| Eversept Partners, LP | 2,885,622 | $67.4M | 4.44% | −428,786−12.9% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 3,779,900 | $88.3M | 1.04% | +3,779,900 | New |
| Vanguard Capital Management LLC | 3,822,579 | $89.3M | 0.00% | +3,822,579 | New |
| Bank of America Corp | 4,249,836 | $99.3M | 0.01% | −460,910−9.8% | Reduced |
| State Street Corp | 4,430,076 | $103.5M | 0.00% | −166,476−3.6% | Reduced |
| Goldman Sachs Group Inc | 4,996,787 | $116.7M | 0.02% | −698,588−12.3% | Reduced |
| Kynam Capital Management, LP | 8,050,959 | $188.1M | 11.94% | 00.0% | Unchanged |
| BlackRock, Inc. | 8,254,426 | $192.8M | 0.00% | +15,424+0.2% | Added |
| 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 |