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, Q4 2025
Institutional positions in Syndax Pharmaceuticals Inc as of Dec 31, 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
- 230
- +7 vs. Q3 2025
- Shares held
- 100.0M
- −831.4K (−0.8%) vs. Q3 2025
- Total value
- $2.10B
- +$549.0M (+35.4%) vs. Q3 2025
- New holders
- 34
- 83 more added
- Sold out
- 27
- 80 more reduced
4 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| New York State Common Retirement Fund | 25,384 | $533.3K | 0.00% | 00.0% | Unchanged |
| Manufacturers Life Insurance Company, The | 25,461 | $534.9K | 0.00% | −3,303−11.5% | Reduced |
| Simplex Trading, LLC | 25,660 | $539.1K | 0.02% | +25,660 | New |
| Engineers Gate Manager LP | 26,265 | $551.8K | 0.01% | −153,101−85.4% | Reduced |
| Dimensional Fund Advisors LP | 28,312 | $594.8K | 0.00% | −93,155−76.7% | Reduced |
| Cerity Partners LLC | 28,856 | $606.3K | 0.00% | +2,082+7.8% | Added |
| DnB Asset Management AS | 29,760 | $625.3K | 0.00% | +6,466+27.8% | Added |
| CWM, LLC | 31,912 | $670.0K | 0.00% | +10,737+50.7% | Added |
| Virtus Investment Advisers, Inc. | 33,549 | $704.9K | 0.19% | +22,885+214.6% | Added |
| DekaBank Deutsche Girozentrale | 28,300 | $710.0K | 0.00% | 00.0% | Unchanged |
| Wellington Management Group LLP | 35,630 | $748.6K | 0.00% | −2,596−6.8% | Reduced |
| Lion Point Capital, LP | 36,000 | $756.4K | 3.91% | −19,000−34.5% | Reduced |
| Wesbanco Bank Inc | 37,000 | $777.4K | 0.02% | +37,000 | New |
| SummitTX Capital, L.P. | 39,127 | $822.1K | 0.02% | −61,459−61.1% | Reduced |
| Janus Henderson Group PLC | 39,335 | $827.0K | 0.00% | 00.0% | Unchanged |
| Fox Run Management, L.L.C. | 40,302 | $846.7K | 0.13% | +4,646+13.0% | Added |
| State of Wisconsin Investment Board | 40,761 | $856.4K | 0.00% | −9,569−19.0% | Reduced |
| Intech Investment Management LLC | 40,793 | $857.1K | 0.01% | +6,918+20.4% | Added |
| Los Angeles Capital Management LLC | 65,280 | $874.1K | 0.00% | +10,066+18.2% | Added |
| Assenagon Asset Management S.A. | 41,737 | $876.9K | 0.00% | −1,742,402−97.7% | Reduced |
| Clearline Capital LP | 43,413 | $912.1K | 0.07% | +9,236+27.0% | Added |
| Man Group plc | 44,638 | $937.8K | 0.00% | −130,313−74.5% | Reduced |
| Tudor Investment Corp Et Al | 47,421 | $996.3K | 0.01% | −2,763−5.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 49,045 | $1.03M | 0.00% | +2,204+4.7% | Added |
| MetLife Investment Management | 49,732 | $1.04M | 0.01% | 00.0% | Unchanged |
| Palumbo Wealth Management LLC | 51,368 | $1.08M | 0.27% | +51,368 | New |
| Millennium Management LLC | 51,937 | $1.09M | 0.00% | −994,519−95.0% | Reduced |
| Twinbeech Capital LP | 52,900 | $1.11M | 0.08% | +8,606+19.4% | Added |
| Voya Investment Management LLC | 53,582 | $1.13M | 0.00% | −29,625−35.6% | Reduced |
| Simplify Asset Management Inc. | 54,715 | $1.15M | 0.02% | +26,210+91.9% | Added |
| Mariner, LLC | 54,987 | $1.15M | 0.00% | +31,547+134.6% | Added |
| Pavaki Capital Management LLC | 60,000 | $1.26M | 0.88% | +60,000 | New |
| Profund Advisors LLC | 60,038 | $1.26M | 0.04% | +29,221+94.8% | Added |
| Sectoral Asset Management Inc | 61,200 | $1.29M | 1.03% | −18,230−23.0% | Reduced |
| Deutsche Bank AG | 66,608 | $1.40M | 0.00% | −5,862−8.1% | Reduced |
| Dark Forest Capital Management LP | 72,703 | $1.53M | 0.07% | +72,703 | New |
| Stifel Financial Corp | 75,914 | $1.59M | 0.00% | −22,427−22.8% | Reduced |
| California State Teachers Retirement System | 78,199 | $1.64M | 0.00% | −88−0.1% | Reduced |
| Legal & General Group Plc | 78,236 | $1.64M | 0.00% | −6,310−7.5% | Reduced |
| Trexquant Investment LP | 87,514 | $1.84M | 0.02% | +87,514 | New |
| Russell Investments Group, Ltd. | 89,639 | $1.88M | 0.00% | +10,101+12.7% | Added |
| Price T Rowe Associates Inc | 94,829 | $1.99M | 0.00% | +3,695+4.1% | Added |
| Alliancebernstein L.P. | 94,880 | $1.99M | 0.00% | −31,769−25.1% | Reduced |
| Torray LLC | 97,802 | $2.05M | 0.29% | +97,802 | New |
| Ieq Capital, LLC | 99,876 | $2.10M | 0.01% | +44,672+80.9% | Added |
| Ishara Investments LP | 100,000 | $2.10M | 2.45% | +100,000 | New |
| Tema ETFs LLC | 100,053 | $2.10M | 0.16% | −10,013−9.1% | Reduced |
| NEOS Investment Management LLC | 101,553 | $2.13M | 0.01% | −8,513−7.7% | Reduced |
| Yelin Lapidot Holdings Management Ltd. | 108,377 | $2.28M | 0.46% | 00.0% | Unchanged |
| Rhumbline Advisers | 118,799 | $2.50M | 0.00% | −12,870−9.8% | Reduced |
| Voss Capital, LLC | 125,000 | $2.63M | 0.14% | +125,000 | New |
| Panagora Asset Management Inc | 125,099 | $2.63M | 0.01% | −30,217−19.5% | Reduced |
| SG Americas Securities, LLC | 129,227 | $2.71M | 0.00% | +83,801+184.5% | Added |
| Velan Capital Investment Management LP | 130,000 | $2.73M | 1.59% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 137,629 | $2.89M | 0.00% | +137,629 | New |
| FMR LLC | 140,560 | $2.95M | 0.00% | +135,459+2,655.5% | Added |
| Atom Investors LP | 141,666 | $2.98M | 0.24% | +141,666 | New |
| UBS Asset Management Americas Inc | 142,407 | $2.99M | 0.00% | +8,146+6.1% | Added |
| Y-Intercept (Hong Kong) Ltd | 155,916 | $3.28M | 0.07% | +55,065+54.6% | Added |
| SEI Investments Co | 159,638 | $3.35M | 0.00% | +116,190+267.4% | Added |
| Invesco Ltd. | 160,525 | $3.37M | 0.00% | +27,434+20.6% | Added |
| Wells Fargo & Company | 160,850 | $3.38M | 0.00% | +103,934+182.6% | Added |
| Swiss National Bank | 161,400 | $3.39M | 0.00% | +2,900+1.8% | Added |
| Rafferty Asset Management, LLC | 161,943 | $3.40M | 0.01% | +20,121+14.2% | Added |
| Jump Financial, LLC | 163,915 | $3.44M | 0.04% | +31,214+23.5% | Added |
| Hudson Bay Capital Management LP | 165,000 | $3.47M | 0.02% | −85,000−34.0% | Reduced |
| Nomura Asset Management International Inc. | 180,000 | $3.78M | 0.01% | +180,000 | New |
| Hennion & Walsh Asset Management, Inc. | 183,802 | $3.86M | 0.13% | +129,104+236.0% | Added |
| Citadel Advisors LLC | 184,003 | $3.87M | 0.00% | −362,265−66.3% | Reduced |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group | 200,000 | $4.20M | 2.05% | 00.0% | Unchanged |
| Integral Health Asset Management, LLC | 200,000 | $4.20M | 0.21% | +200,000 | New |
| Pinnacle Financial Partners, Inc. | 206,601 | $4.34M | 0.03% | +206,601 | New |
| Canada Pension Plan Investment Board | 229,600 | $4.82M | 0.00% | 00.0% | Unchanged |
| Capital Fund Management S.A. | 233,871 | $4.91M | 0.05% | −107,323−31.5% | Reduced |
| PFM Health Sciences, LP | 242,967 | $5.10M | 0.52% | −13,521−5.3% | Reduced |
| Sector Gamma AS | 252,062 | $5.30M | 1.21% | +41,248+19.6% | Added |
| DAFNA Capital Management LLC | 277,855 | $5.84M | 1.36% | −222,847−44.5% | Reduced |
| Ameriprise Financial Inc | 282,587 | $5.94M | 0.00% | +187,144+196.1% | Added |
| Pale Fire Capital SE | 284,460 | $5.98M | 0.77% | +284,460 | New |
| Barclays PLC | 314,672 | $6.61M | 0.00% | −33,389−9.6% | Reduced |
| Granahan Investment Management Inc | 366,793 | $7.71M | 0.33% | −29,543−7.5% | Reduced |
| Standard Life Aberdeen plc | 372,792 | $7.83M | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 378,504 | $7.95M | 0.00% | +124,654+49.1% | Added |
| Knott David M Jr | 415,000 | $8.72M | 4.04% | −13,000−3.0% | Reduced |
| Rhenman & Partners Asset Management AB | 487,000 | $10.2M | 0.96% | −87,000−15.2% | Reduced |
| Brevan Howard Capital Management LP | 515,129 | $10.8M | 0.21% | +390,554+313.5% | Added |
| Renaissance Technologies LLC | 544,800 | $11.4M | 0.02% | −315,700−36.7% | Reduced |
| ExodusPoint Capital Management, LP | 554,761 | $11.7M | 0.13% | +482,297+665.6% | Added |
| Parkman Healthcare Partners LLC | 574,023 | $12.1M | 1.15% | −272,876−32.2% | Reduced |
| Two Sigma Advisers, LP | 632,752 | $13.3M | 0.03% | +249,700+65.2% | Added |
| Silverarc Capital Management, LLC | 642,899 | $13.5M | 1.95% | +179,191+38.6% | Added |
| Prosight Management, LP | 665,000 | $14.0M | 2.89% | −338,400−33.7% | Reduced |
| Qube Research & Technologies Ltd | 688,137 | $14.5M | 0.02% | −956,707−58.2% | Reduced |
| UBS Group AG | 716,219 | $15.0M | 0.00% | −958,294−57.2% | Reduced |
| Apis Capital Advisors, LLC | 724,000 | $15.2M | 2.65% | +86,000+13.5% | Added |
| Charles Schwab Investment Management Inc | 727,424 | $15.3M | 0.00% | +8,390+1.2% | Added |
| Northern Trust Corp | 728,921 | $15.3M | 0.00% | −47,765−6.1% | Reduced |
| Jane Street Group, LLC | 748,920 | $15.7M | 0.02% | +10,654+1.4% | Added |
| Sphera Funds Management Ltd. | 762,563 | $16.0M | 3.35% | +374,847+96.7% | Added |
| Palo Alto Investors LP | 794,507 | $16.7M | 2.32% | +139,577+21.3% | Added |