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, Q3 2025
Institutional positions in Syndax Pharmaceuticals Inc as of Sep 30, 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
- 227
- +12 vs. Q2 2025
- Shares held
- 101.1M
- −592.2K (−0.6%) vs. Q2 2025
- Total value
- $1.56B
- +$603.3M (+63.3%) vs. Q2 2025
- New holders
- 40
- 82 more added
- Sold out
- 28
- 72 more reduced
2 institutions that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Prelude Capital Management, LLC | 32,739 | $503.7K | 0.04% | −57,094−63.6% | Reduced |
| Intech Investment Management LLC | 33,875 | $521.2K | 0.00% | −11,878−26.0% | Reduced |
| Clearline Capital LP | 34,177 | $525.8K | 0.05% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 34,750 | $534.6K | 0.00% | −336,713−90.6% | Reduced |
| Quarry LP | 35,365 | $544.1K | 0.13% | −23,635−40.1% | Reduced |
| Squarepoint Ops LLC | 35,519 | $546.5K | 0.00% | −1,738−4.7% | Reduced |
| Fox Run Management, L.L.C. | 35,656 | $548.6K | 0.09% | +17,293+94.2% | Added |
| Stonepine Capital Management, LLC | 37,200 | $572.3K | 0.47% | −55,700−60.0% | Reduced |
| Wellington Management Group LLP | 38,226 | $588.1K | 0.00% | +4,141+12.1% | Added |
| Janus Henderson Group PLC | 39,335 | $605.2K | 0.00% | 00.0% | Unchanged |
| SEI Investments Co | 43,448 | $668.4K | 0.00% | +29,894+220.6% | Added |
| Point72 Hong Kong Ltd | 43,809 | $674.0K | 0.03% | +43,809 | New |
| Twinbeech Capital LP | 44,294 | $681.5K | 0.03% | −68,500−60.7% | Reduced |
| SG Americas Securities, LLC | 45,426 | $699.0K | 0.00% | +45,426 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 46,841 | $721.9K | 0.00% | −6,004−11.4% | Reduced |
| Gotham Asset Management, LLC | 48,246 | $742.3K | 0.00% | +48,246 | New |
| MetLife Investment Management | 49,732 | $765.1K | 0.00% | 00.0% | Unchanged |
| Tudor Investment Corp Et Al | 50,184 | $772.1K | 0.01% | −2,872−5.4% | Reduced |
| State of Wisconsin Investment Board | 50,330 | $774.3K | 0.00% | −90,783−64.3% | Reduced |
| Hennion & Walsh Asset Management, Inc. | 54,698 | $841.5K | 0.03% | +22,513+69.9% | Added |
| Lion Point Capital, LP | 55,000 | $846.2K | 4.81% | 00.0% | Unchanged |
| Ieq Capital, LLC | 55,204 | $849.3K | 0.00% | +42,044+319.5% | Added |
| Los Angeles Capital Management LLC | 55,214 | $849.5K | 0.00% | +55,214 | New |
| Wells Fargo & Company | 56,916 | $875.7K | 0.00% | −97,490−63.1% | Reduced |
| HSBC Holdings PLC | 56,524 | $884.0K | 0.00% | −50,263−47.1% | Reduced |
| Quest Partners LLC | 59,341 | $913.0K | 0.06% | +38,394+183.3% | Added |
| ExodusPoint Capital Management, LP | 72,464 | $1.11M | 0.02% | +72,464 | New |
| Deutsche Bank AG | 72,470 | $1.12M | 0.00% | +7,699+11.9% | Added |
| California State Teachers Retirement System | 78,287 | $1.20M | 0.00% | +6,268+8.7% | Added |
| Sectoral Asset Management Inc | 79,430 | $1.22M | 0.75% | +16,130+25.5% | Added |
| Russell Investments Group, Ltd. | 79,538 | $1.22M | 0.00% | −46,620−37.0% | Reduced |
| Voya Investment Management LLC | 83,207 | $1.28M | 0.00% | −7,648−8.4% | Reduced |
| Legal & General Group Plc | 84,546 | $1.30M | 0.00% | −290.0% | Reduced |
| Price T Rowe Associates Inc | 91,134 | $1.40M | 0.00% | +15,730+20.9% | Added |
| Ameriprise Financial Inc | 95,443 | $1.47M | 0.00% | −1,231−1.3% | Reduced |
| Stifel Financial Corp | 98,341 | $1.51M | 0.00% | +9,239+10.4% | Added |
| SummitTX Capital, L.P. | 100,586 | $1.55M | 0.06% | −110,658−52.4% | Reduced |
| Y-Intercept (Hong Kong) Ltd | 100,851 | $1.55M | 0.04% | −176,081−63.6% | Reduced |
| Yelin Lapidot Holdings Management Ltd. | 108,377 | $1.67M | 0.35% | 00.0% | Unchanged |
| NEOS Investment Management LLC | 110,066 | $1.69M | 0.01% | +23,765+27.5% | Added |
| Tema ETFs LLC | 110,066 | $1.69M | 0.14% | +23,765+27.5% | Added |
| Exome Asset Management LLC | 117,783 | $1.81M | 1.20% | −190,515−61.8% | Reduced |
| Dimensional Fund Advisors LP | 121,467 | $1.87M | 0.00% | −366,180−75.1% | Reduced |
| Brevan Howard Capital Management LP | 124,575 | $1.92M | 0.03% | +96,348+341.3% | Added |
| Schroder Investment Management Group | 123,404 | $1.92M | 0.00% | +1,241+1.0% | Added |
| Alliancebernstein L.P. | 126,649 | $1.95M | 0.00% | +9,000+7.6% | Added |
| Velan Capital Investment Management LP | 130,000 | $2.00M | 1.88% | +130,000 | New |
| Rhumbline Advisers | 131,669 | $2.03M | 0.00% | +2,937+2.3% | Added |
| Schonfeld Strategic Advisors LLC | 132,123 | $2.03M | 0.01% | −132,621−50.1% | Reduced |
| Jump Financial, LLC | 132,701 | $2.04M | 0.03% | −248,334−65.2% | Reduced |
| Invesco Ltd. | 133,091 | $2.05M | 0.00% | +27,934+26.6% | Added |
| UBS Asset Management Americas Inc | 134,261 | $2.07M | 0.00% | −121,877−47.6% | Reduced |
| Rafferty Asset Management, LLC | 141,822 | $2.18M | 0.01% | +15,777+12.5% | Added |
| HRT Financial LP | 148,139 | $2.28M | 0.01% | +21,028+16.5% | Added |
| Keybank National Association | 150,000 | $2.31M | 0.01% | +150,000 | New |
| Panagora Asset Management Inc | 155,316 | $2.39M | 0.01% | +155,316 | New |
| Swiss National Bank | 158,500 | $2.44M | 0.00% | −5,800−3.5% | Reduced |
| Man Group plc | 174,951 | $2.69M | 0.01% | −53,216−23.3% | Reduced |
| Engineers Gate Manager LP | 179,366 | $2.76M | 0.03% | +90+0.1% | Added |
| Macquarie Group Ltd | 180,000 | $2.77M | 0.00% | 00.0% | Unchanged |
| Tang Capital Management LLC | 200,000 | $3.08M | 0.12% | 00.0% | Unchanged |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group | 200,000 | $3.08M | 1.82% | 00.0% | Unchanged |
| Sector Gamma AS | 210,814 | $3.24M | 0.80% | +210,814 | New |
| Royal Bank of Canada | 228,000 | $3.51M | 0.00% | −123,263−35.1% | Reduced |
| Canada Pension Plan Investment Board | 229,600 | $3.53M | 0.00% | +229,600 | New |
| Marshall Wace, LLP | 233,973 | $3.60M | 0.00% | +1,850+0.8% | Added |
| Cubist Systematic Strategies, LLC | 246,779 | $3.80M | 0.05% | +70,749+40.2% | Added |
| Hudson Bay Capital Management LP | 250,000 | $3.85M | 0.02% | −193,300−43.6% | Reduced |
| JPMorgan Chase & Co | 253,850 | $3.91M | 0.00% | −19,024−7.0% | Reduced |
| PFM Health Sciences, LP | 256,488 | $3.95M | 0.34% | +256,488 | New |
| Boothbay Fund Management, LLC | 261,933 | $4.03M | 0.10% | +133,088+103.3% | Added |
| Walleye Capital LLC | 297,658 | $4.58M | 0.04% | +71,643+31.7% | Added |
| Ikarian Capital, LLC | 333,733 | $5.13M | 1.16% | +333,733 | New |
| Capital Fund Management S.A. | 341,194 | $5.25M | 0.05% | +162,905+91.4% | Added |
| Barclays PLC | 348,061 | $5.35M | 0.00% | −34,905−9.1% | Reduced |
| Standard Life Aberdeen plc | 372,792 | $5.74M | 0.01% | +69,366+22.9% | Added |
| Two Sigma Advisers, LP | 383,052 | $5.89M | 0.01% | −9,400−2.4% | Reduced |
| Zimmer Partners, LP | 383,100 | $5.89M | 0.14% | −222,700−36.8% | Reduced |
| Sphera Funds Management Ltd. | 387,716 | $5.97M | 1.41% | −1,183,848−75.3% | Reduced |
| Granahan Investment Management Inc | 396,336 | $6.10M | 0.25% | −595,052−60.0% | Reduced |
| Knott David M Jr | 428,000 | $6.58M | 2.76% | +75,222+21.3% | Added |
| Silverarc Capital Management, LLC | 463,708 | $7.13M | 1.03% | +60,744+15.1% | Added |
| DAFNA Capital Management LLC | 500,702 | $7.70M | 1.90% | −42,900−7.9% | Reduced |
| Citadel Advisors LLC | 546,268 | $8.40M | 0.01% | −93,732−14.6% | Reduced |
| AQR Capital Management LLC | 558,076 | $8.59M | 0.01% | +327,499+142.0% | Added |
| Rhenman & Partners Asset Management AB | 574,000 | $8.83M | 0.98% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 599,871 | $9.23M | 0.01% | +99,968+20.0% | Added |
| Apis Capital Advisors, LLC | 638,000 | $9.82M | 2.17% | +638,000 | New |
| Palo Alto Investors LP | 654,930 | $10.1M | 1.86% | +210,563+47.4% | Added |
| Two Sigma Investments, LP | 712,659 | $11.0M | 0.02% | +155,688+28.0% | Added |
| Charles Schwab Investment Management Inc | 719,034 | $11.1M | 0.00% | +6,724+0.9% | Added |
| Jane Street Group, LLC | 738,266 | $11.4M | 0.01% | +570,773+340.8% | Added |
| Northern Trust Corp | 776,686 | $11.9M | 0.00% | +6,235+0.8% | Added |
| Ensign Peak Advisors, Inc | 809,064 | $12.4M | 0.02% | +120,000+17.4% | Added |
| Parkman Healthcare Partners LLC | 846,899 | $13.0M | 1.43% | −20,914−2.4% | Reduced |
| Renaissance Technologies LLC | 860,500 | $13.2M | 0.02% | +22,800+2.7% | Added |
| Candriam Luxembourg S.C.A. | 925,332 | $14.2M | 0.07% | +250,247+37.1% | Added |
| Algert Global LLC | 930,766 | $14.3M | 0.24% | −90,514−8.9% | Reduced |
| Eventide Asset Management, LLC | 988,486 | $15.2M | 0.25% | −425,595−30.1% | Reduced |
| Prosight Management, LP | 1,003,400 | $15.4M | 3.71% | −76,273−7.1% | Reduced |