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 |
|---|---|---|---|---|---|
| SummitTX Capital, L.P. | 66,340 | $1.55M | 0.05% | +27,213+69.6% | Added |
| Toroso Investments, LLC | 65,326 | $1.53M | 0.00% | +65,326 | New |
| Hudson Bay Capital Management LP | 62,330 | $1.46M | 0.01% | −102,670−62.2% | Reduced |
| Pavaki Capital Management LLC | 60,000 | $1.40M | 0.98% | 00.0% | Unchanged |
| Legal & General Group Plc | 59,058 | $1.38M | 0.00% | −19,178−24.5% | Reduced |
| Tema ETFs LLC | 58,348 | $1.36M | 0.09% | −41,705−41.7% | Reduced |
| Profund Advisors LLC | 55,904 | $1.31M | 0.05% | −4,134−6.9% | Reduced |
| Marshall Wace, LLP | 54,274 | $1.27M | 0.00% | +54,274 | New |
| Neo Ivy Capital Management | 53,149 | $1.24M | 0.33% | +53,149 | New |
| Voya Investment Management LLC | 53,077 | $1.24M | 0.00% | −505−0.9% | Reduced |
| Vanguard Asset Management, Ltd | 52,097 | $1.22M | 0.00% | +52,097 | New |
| Barclays PLC | 50,323 | $1.18M | 0.00% | −264,349−84.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 49,227 | $1.14M | 0.00% | +182+0.4% | Added |
| Gsa Capital Partners LLP | 48,554 | $1.13M | 0.07% | +26,031+115.6% | Added |
| MetLife Investment Management | 46,838 | $1.09M | 0.01% | −2,894−5.8% | Reduced |
| State of Wisconsin Investment Board | 45,846 | $1.07M | 0.00% | +5,085+12.5% | Added |
| Clearline Capital LP | 43,413 | $1.01M | 0.08% | 00.0% | Unchanged |
| Envestnet Asset Management Inc | 41,872 | $978.1K | 0.00% | +17,066+68.8% | Added |
| Assenagon Asset Management S.A. | 41,737 | $975.0K | 0.00% | 00.0% | Unchanged |
| Stifel Financial Corp | 41,714 | $974.4K | 0.00% | −34,200−45.1% | Reduced |
| Virtus Investment Advisers, Inc. | 41,445 | $968.2K | 0.27% | +7,896+23.5% | Added |
| Legato Capital Management LLC | 41,376 | $966.5K | 0.09% | +41,376 | New |
| BNP Paribas Arbitrage, SA | 40,381 | $943.3K | 0.00% | +26,153+183.8% | Added |
| Manufacturers Life Insurance Company, The | 39,904 | $932.2K | 0.00% | +14,443+56.7% | Added |
| Janus Henderson Group PLC | 39,335 | $920.0K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 39,083 | $913.0K | 0.00% | +10,227+35.4% | Added |
| SG Americas Securities, LLC | 38,548 | $900.0K | 0.00% | −90,679−70.2% | Reduced |
| Engineers Gate Manager LP | 38,408 | $897.2K | 0.01% | +12,143+46.2% | Added |
| Victory Capital Management Inc | 38,331 | $895.4K | 0.00% | +28,624+294.9% | Added |
| Vanguard Global Advisers, LLC | 37,415 | $874.0K | 0.00% | +37,415 | New |
| Palumbo Wealth Management LLC | 37,183 | $868.6K | 0.21% | −14,185−27.6% | Reduced |
| CWM, LLC | 37,046 | $865.4K | 0.00% | +5,134+16.1% | Added |
| HighTower Advisors, LLC | 37,031 | $865.0K | 0.00% | +18,091+95.5% | Added |
| Wesbanco Bank Inc | 37,000 | $864.3K | 0.02% | 00.0% | Unchanged |
| Voleon Capital Management LP | 36,633 | $855.7K | 0.02% | +36,633 | New |
| Qube Research & Technologies Ltd | 36,047 | $842.1K | 0.00% | −652,090−94.8% | Reduced |
| Lion Point Capital, LP | 36,000 | $841.0K | 5.03% | 00.0% | Unchanged |
| Sectoral Asset Management Inc | 31,680 | $787.5K | 0.65% | −29,520−48.2% | Reduced |
| Caitong International Asset Management Co., Ltd | 33,197 | $775.5K | 0.14% | +33,197 | New |
| Creative Planning | 31,902 | $745.2K | 0.00% | +7,191+29.1% | Added |
| Bridgefront Capital, LLC | 31,101 | $726.5K | 0.18% | +11,349+57.5% | Added |
| Intech Investment Management LLC | 30,300 | $707.8K | 0.01% | −10,493−25.7% | Reduced |
| Los Angeles Capital Management LLC | 28,538 | $666.6K | 0.00% | −36,742−56.3% | Reduced |
| State of New Jersey Common Pension Fund D | 27,968 | $653.3K | 0.00% | +27,968 | New |
| Headlands Technologies LLC | 25,392 | $593.2K | 0.07% | +25,392 | New |
| New York State Common Retirement Fund | 25,384 | $593.0K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 24,739 | $577.9K | 0.00% | +4,198+20.4% | Added |
| Wealth Enhancement Advisory Services, LLC | 22,545 | $567.0K | 0.00% | +2,350+11.6% | Added |
| HSBC Holdings PLC | 23,461 | $555.6K | 0.00% | +730+3.2% | Added |
| Mercer Global Advisors Inc | 23,637 | $552.2K | 0.00% | +5,832+32.8% | Added |
| Royal Bank of Canada | 23,381 | $546.0K | 0.00% | −1,959−7.7% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 23,371 | $545.9K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 22,759 | $531.6K | 0.00% | −357−1.5% | Reduced |
| Quantinno Capital Management LP | 22,576 | $527.4K | 0.00% | +2,237+11.0% | Added |
| Arizona State Retirement System | 22,478 | $525.1K | 0.00% | −335−1.5% | Reduced |
| CWM Advisors, LLC | 22,031 | $514.6K | 0.03% | −111−0.5% | Reduced |
| Fox Run Management, L.L.C. | 21,993 | $494.4K | 0.09% | −18,309−45.4% | Reduced |
| Simplex Trading, LLC | 20,825 | $486.5K | 0.02% | −4,835−18.8% | Reduced |
| Citigroup Inc | 20,332 | $475.0K | 0.00% | −3,409−14.4% | Reduced |
| Marex Group plc | 20,060 | $468.6K | 0.00% | +5,000+33.2% | Added |
| PSP Research LLC | 20,000 | $467.2K | 0.33% | −4,716−19.1% | Reduced |
| Allspring Global Investments Holdings, LLC | 19,564 | $467.2K | 0.00% | +2,002+11.4% | Added |
| Vanguard Investments Australia, Ltd. | 19,585 | $457.5K | 0.00% | +19,585 | New |
| State Board of Administration of Florida Retirement System | 18,968 | $443.1K | 0.00% | 00.0% | Unchanged |
| Axq Capital, LP | 18,340 | $428.4K | 0.06% | +18,340 | New |
| KLP Kapitalforvaltning AS | 17,600 | $411.1K | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 17,500 | $408.8K | 0.02% | +5,500+45.8% | Added |
| DnB Asset Management AS | 16,652 | $389.0K | 0.00% | −13,108−44.0% | Reduced |
| ProShare Advisors LLC | 16,422 | $383.6K | 0.00% | −2,966−15.3% | Reduced |
| Guggenheim Capital LLC | 16,056 | $375.1K | 0.00% | +1,518+10.4% | Added |
| E Fund Management Co., Ltd. | 15,678 | $366.2K | 0.01% | +15,678 | New |
| China Universal Asset Management Co., Ltd. | 15,652 | $365.6K | 0.03% | +1,489+10.5% | Added |
| Bank of Montreal | 15,242 | $356.1K | 0.00% | +15,242 | New |
| Tower Research Capital LLC (TRC) | 14,432 | $337.1K | 0.01% | +9,588+197.9% | Added |
| Raymond James Financial Inc | 13,841 | $323.3K | 0.00% | +2,714+24.4% | Added |
| Public Employees Retirement Association of Colorado | 13,746 | $321.0K | 0.00% | 00.0% | Unchanged |
| Diversified Trust Co | 13,660 | $319.1K | 0.01% | +2,551+23.0% | Added |
| Prudential Financial Inc | 13,410 | $313.3K | 0.00% | +13,410 | New |
| Two Sigma Securities, LLC | 13,009 | $303.9K | 0.04% | +13,009 | New |
| Post Resch Tallon Group Inc. | 12,500 | $302.4K | 0.24% | −10,300−45.2% | Reduced |
| Harbour Capital Advisors, LLC | 13,650 | $301.4K | 0.06% | +13,650 | New |
| Bleakley Financial Group, LLC | 12,488 | $291.7K | 0.00% | +12,488 | New |
| Pictet Asset Management Holding SA | 12,356 | $288.6K | 0.00% | 00.0% | Unchanged |
| Quadrature Capital Ltd | 12,129 | $283.3K | 0.00% | −2,757−18.5% | Reduced |
| Merit Financial Group, LLC | 10,954 | $255.9K | 0.00% | +10,954 | New |
| Magnetar Financial LLC | 10,791 | $252.1K | 0.00% | +10,791 | New |
| Teacher Retirement System of Texas | 10,540 | $246.2K | 0.00% | −1,577−13.0% | Reduced |
| Winton Group Ltd | 10,300 | $240.6K | 0.01% | −4,274−29.3% | Reduced |
| Velan Capital Investment Management LP | 10,000 | $233.6K | 0.15% | −120,000−92.3% | Reduced |
| Farallon Capital Management, L.L.C. | 10,000 | $233.6K | 0.00% | 00.0% | Unchanged |
| Commonwealth Equity Services, LLC | 9,775 | $228.3K | 0.00% | +9,775 | New |
| Pallas Capital Advisors LLC | 9,716 | $227.0K | 0.01% | −1,269−11.6% | Reduced |
| Captrust Financial Advisors | 9,563 | $223.3K | 0.00% | +9,563 | New |
| Wedbush Securities Inc | 9,054 | $212.0K | 0.01% | +9,054 | New |
| Great West Life Assurance Co | 7,182 | $169.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 7,119 | $166.3K | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 4,600 | $107.5K | 0.00% | +377+8.9% | Added |
| US Bancorp | 4,573 | $106.8K | 0.00% | +52+1.2% | Added |
| Rockefeller Capital Management L.P. | 3,209 | $75.0K | 0.00% | +2,737+579.9% | Added |
| KBC Group NV | 3,062 | $72.0K | 0.00% | −2,118−40.9% | Reduced |