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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 8,625,244 | $132.7M | 0.00% | −1,831,663−17.5% | Reduced |
| Kynam Capital Management, LP | 8,520,000 | $131.1M | 9.76% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 5,486,434 | $84.4M | 0.01% | −310,761−5.4% | Reduced |
| Vanguard Group Inc | 5,138,617 | $79.1M | 0.00% | +104,683+2.1% | Added |
| Point72 Asset Management, L.P. | 4,255,047 | $65.5M | 0.14% | +2,127,580+100.0% | Added |
| State Street Corp | 3,853,549 | $59.3M | 0.00% | +410,797+11.9% | Added |
| Bank of America Corp | 3,697,753 | $56.9M | 0.00% | −141,119−3.7% | Reduced |
| Eversept Partners, LP | 3,467,314 | $53.3M | 4.09% | −598,041−14.7% | Reduced |
| Adage Capital Partners GP, L.L.C. | 3,311,963 | $51.0M | 0.08% | +1,879,523+131.2% | Added |
| Kingdon Capital Management, L.L.C. | 2,500,000 | $38.5M | 6.03% | +400,000+19.0% | Added |
| Franklin Resources Inc | 2,390,561 | $36.8M | 0.01% | +30,884+1.3% | Added |
| Geode Capital Management, LLC | 2,091,331 | $32.2M | 0.00% | +41,981+2.0% | Added |
| Soleus Capital Management, L.P. | 2,012,110 | $31.0M | 1.65% | +920,000+84.2% | Added |
| Assenagon Asset Management S.A. | 1,784,139 | $27.4M | 0.04% | −255,848−12.5% | Reduced |
| UBS Group AG | 1,674,513 | $25.8M | 0.01% | +239,098+16.7% | Added |
| Qube Research & Technologies Ltd | 1,644,844 | $25.3M | 0.04% | −21,072−1.3% | Reduced |
| Catalio Capital Management, LP | 1,614,717 | $24.8M | 4.59% | −489,795−23.3% | Reduced |
| Woodline Partners LP | 1,550,520 | $23.9M | 0.11% | −342,231−18.1% | Reduced |
| Nuveen, LLC | 1,475,798 | $22.7M | 0.01% | +1,209,755+454.7% | Added |
| MPM Oncology Impact Management LP | 1,375,674 | $21.2M | 3.46% | +1,375,674 | New |
| StemPoint Capital LP | 1,366,205 | $21.0M | 4.24% | −1,006,429−42.4% | Reduced |
| Aisling Capital Management LP | 1,316,806 | $20.3M | 4.44% | 00.0% | Unchanged |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 1,236,077 | $19.0M | 0.05% | −209,363−14.5% | Reduced |
| Morgan Stanley | 1,199,296 | $18.5M | 0.00% | +350,060+41.2% | Added |
| D. E. Shaw & Co., Inc. | 1,077,585 | $16.6M | 0.01% | +433,043+67.2% | Added |
| Bank of New York Mellon Corp | 1,052,335 | $16.2M | 0.00% | +815,234+343.8% | Added |
| Millennium Management LLC | 1,046,456 | $16.1M | 0.01% | −552,157−34.5% | Reduced |
| Prosight Management, LP | 1,003,400 | $15.4M | 3.71% | −76,273−7.1% | Reduced |
| Eventide Asset Management, LLC | 988,486 | $15.2M | 0.25% | −425,595−30.1% | Reduced |
| Algert Global LLC | 930,766 | $14.3M | 0.24% | −90,514−8.9% | Reduced |
| Candriam Luxembourg S.C.A. | 925,332 | $14.2M | 0.07% | +250,247+37.1% | Added |
| Renaissance Technologies LLC | 860,500 | $13.2M | 0.02% | +22,800+2.7% | Added |
| Parkman Healthcare Partners LLC | 846,899 | $13.0M | 1.43% | −20,914−2.4% | Reduced |
| Ensign Peak Advisors, Inc | 809,064 | $12.4M | 0.02% | +120,000+17.4% | Added |
| Northern Trust Corp | 776,686 | $11.9M | 0.00% | +6,235+0.8% | Added |
| Jane Street Group, LLC | 738,266 | $11.4M | 0.01% | +570,773+340.8% | Added |
| Charles Schwab Investment Management Inc | 719,034 | $11.1M | 0.00% | +6,724+0.9% | Added |
| Two Sigma Investments, LP | 712,659 | $11.0M | 0.02% | +155,688+28.0% | Added |
| Palo Alto Investors LP | 654,930 | $10.1M | 1.86% | +210,563+47.4% | Added |
| Apis Capital Advisors, LLC | 638,000 | $9.82M | 2.17% | +638,000 | New |
| BNP Paribas Arbitrage, SA | 599,871 | $9.23M | 0.01% | +99,968+20.0% | Added |
| Rhenman & Partners Asset Management AB | 574,000 | $8.83M | 0.98% | 00.0% | Unchanged |
| AQR Capital Management LLC | 558,076 | $8.59M | 0.01% | +327,499+142.0% | Added |
| Citadel Advisors LLC | 546,268 | $8.40M | 0.01% | −93,732−14.6% | Reduced |
| DAFNA Capital Management LLC | 500,702 | $7.70M | 1.90% | −42,900−7.9% | Reduced |
| Silverarc Capital Management, LLC | 463,708 | $7.13M | 1.03% | +60,744+15.1% | Added |
| Knott David M Jr | 428,000 | $6.58M | 2.76% | +75,222+21.3% | Added |
| Granahan Investment Management Inc | 396,336 | $6.10M | 0.25% | −595,052−60.0% | Reduced |
| Sphera Funds Management Ltd. | 387,716 | $5.97M | 1.41% | −1,183,848−75.3% | Reduced |
| Zimmer Partners, LP | 383,100 | $5.89M | 0.14% | −222,700−36.8% | Reduced |
| Two Sigma Advisers, LP | 383,052 | $5.89M | 0.01% | −9,400−2.4% | Reduced |
| Standard Life Aberdeen plc | 372,792 | $5.74M | 0.01% | +69,366+22.9% | Added |
| Barclays PLC | 348,061 | $5.35M | 0.00% | −34,905−9.1% | Reduced |
| Capital Fund Management S.A. | 341,194 | $5.25M | 0.05% | +162,905+91.4% | Added |
| Ikarian Capital, LLC | 333,733 | $5.13M | 1.16% | +333,733 | New |
| Walleye Capital LLC | 297,658 | $4.58M | 0.04% | +71,643+31.7% | Added |
| Boothbay Fund Management, LLC | 261,933 | $4.03M | 0.10% | +133,088+103.3% | Added |
| PFM Health Sciences, LP | 256,488 | $3.95M | 0.34% | +256,488 | New |
| JPMorgan Chase & Co | 253,850 | $3.91M | 0.00% | −19,024−7.0% | Reduced |
| Hudson Bay Capital Management LP | 250,000 | $3.85M | 0.02% | −193,300−43.6% | Reduced |
| Cubist Systematic Strategies, LLC | 246,779 | $3.80M | 0.05% | +70,749+40.2% | Added |
| Marshall Wace, LLP | 233,973 | $3.60M | 0.00% | +1,850+0.8% | Added |
| Canada Pension Plan Investment Board | 229,600 | $3.53M | 0.00% | +229,600 | New |
| Royal Bank of Canada | 228,000 | $3.51M | 0.00% | −123,263−35.1% | Reduced |
| Sector Gamma AS | 210,814 | $3.24M | 0.80% | +210,814 | New |
| 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 |
| Macquarie Group Ltd | 180,000 | $2.77M | 0.00% | 00.0% | Unchanged |
| Engineers Gate Manager LP | 179,366 | $2.76M | 0.03% | +90+0.1% | Added |
| Man Group plc | 174,951 | $2.69M | 0.01% | −53,216−23.3% | Reduced |
| Swiss National Bank | 158,500 | $2.44M | 0.00% | −5,800−3.5% | Reduced |
| Panagora Asset Management Inc | 155,316 | $2.39M | 0.01% | +155,316 | New |
| Keybank National Association | 150,000 | $2.31M | 0.01% | +150,000 | New |
| HRT Financial LP | 148,139 | $2.28M | 0.01% | +21,028+16.5% | Added |
| Rafferty Asset Management, LLC | 141,822 | $2.18M | 0.01% | +15,777+12.5% | Added |
| UBS Asset Management Americas Inc | 134,261 | $2.07M | 0.00% | −121,877−47.6% | Reduced |
| Invesco Ltd. | 133,091 | $2.05M | 0.00% | +27,934+26.6% | Added |
| Jump Financial, LLC | 132,701 | $2.04M | 0.03% | −248,334−65.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 132,123 | $2.03M | 0.01% | −132,621−50.1% | Reduced |
| Rhumbline Advisers | 131,669 | $2.03M | 0.00% | +2,937+2.3% | Added |
| Velan Capital Investment Management LP | 130,000 | $2.00M | 1.88% | +130,000 | New |
| Alliancebernstein L.P. | 126,649 | $1.95M | 0.00% | +9,000+7.6% | Added |
| Schroder Investment Management Group | 123,404 | $1.92M | 0.00% | +1,241+1.0% | Added |
| Brevan Howard Capital Management LP | 124,575 | $1.92M | 0.03% | +96,348+341.3% | Added |
| Dimensional Fund Advisors LP | 121,467 | $1.87M | 0.00% | −366,180−75.1% | Reduced |
| Exome Asset Management LLC | 117,783 | $1.81M | 1.20% | −190,515−61.8% | Reduced |
| 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 |
| Yelin Lapidot Holdings Management Ltd. | 108,377 | $1.67M | 0.35% | 00.0% | Unchanged |
| Y-Intercept (Hong Kong) Ltd | 100,851 | $1.55M | 0.04% | −176,081−63.6% | Reduced |
| SummitTX Capital, L.P. | 100,586 | $1.55M | 0.06% | −110,658−52.4% | Reduced |
| Stifel Financial Corp | 98,341 | $1.51M | 0.00% | +9,239+10.4% | Added |
| Ameriprise Financial Inc | 95,443 | $1.47M | 0.00% | −1,231−1.3% | Reduced |
| Price T Rowe Associates Inc | 91,134 | $1.40M | 0.00% | +15,730+20.9% | Added |
| Legal & General Group Plc | 84,546 | $1.30M | 0.00% | −290.0% | Reduced |
| Voya Investment Management LLC | 83,207 | $1.28M | 0.00% | −7,648−8.4% | Reduced |
| Russell Investments Group, Ltd. | 79,538 | $1.22M | 0.00% | −46,620−37.0% | Reduced |
| Sectoral Asset Management Inc | 79,430 | $1.22M | 0.75% | +16,130+25.5% | Added |
| California State Teachers Retirement System | 78,287 | $1.20M | 0.00% | +6,268+8.7% | Added |
| Deutsche Bank AG | 72,470 | $1.12M | 0.00% | +7,699+11.9% | Added |