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 |
|---|---|---|---|---|---|
| Simplify Asset Management Inc. | 54,715 | $1.15M | 0.02% | +26,210+91.9% | Added |
| Voya Investment Management LLC | 53,582 | $1.13M | 0.00% | −29,625−35.6% | Reduced |
| Twinbeech Capital LP | 52,900 | $1.11M | 0.08% | +8,606+19.4% | Added |
| Millennium Management LLC | 51,937 | $1.09M | 0.00% | −994,519−95.0% | Reduced |
| Palumbo Wealth Management LLC | 51,368 | $1.08M | 0.27% | +51,368 | New |
| MetLife Investment Management | 49,732 | $1.04M | 0.01% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 49,045 | $1.03M | 0.00% | +2,204+4.7% | Added |
| Tudor Investment Corp Et Al | 47,421 | $996.3K | 0.01% | −2,763−5.5% | Reduced |
| Man Group plc | 44,638 | $937.8K | 0.00% | −130,313−74.5% | Reduced |
| Clearline Capital LP | 43,413 | $912.1K | 0.07% | +9,236+27.0% | Added |
| Assenagon Asset Management S.A. | 41,737 | $876.9K | 0.00% | −1,742,402−97.7% | Reduced |
| Los Angeles Capital Management LLC | 65,280 | $874.1K | 0.00% | +10,066+18.2% | Added |
| Intech Investment Management LLC | 40,793 | $857.1K | 0.01% | +6,918+20.4% | Added |
| State of Wisconsin Investment Board | 40,761 | $856.4K | 0.00% | −9,569−19.0% | Reduced |
| Fox Run Management, L.L.C. | 40,302 | $846.7K | 0.13% | +4,646+13.0% | Added |
| Janus Henderson Group PLC | 39,335 | $827.0K | 0.00% | 00.0% | Unchanged |
| SummitTX Capital, L.P. | 39,127 | $822.1K | 0.02% | −61,459−61.1% | Reduced |
| Wesbanco Bank Inc | 37,000 | $777.4K | 0.02% | +37,000 | New |
| Lion Point Capital, LP | 36,000 | $756.4K | 3.91% | −19,000−34.5% | Reduced |
| Wellington Management Group LLP | 35,630 | $748.6K | 0.00% | −2,596−6.8% | Reduced |
| DekaBank Deutsche Girozentrale | 28,300 | $710.0K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 33,549 | $704.9K | 0.19% | +22,885+214.6% | Added |
| CWM, LLC | 31,912 | $670.0K | 0.00% | +10,737+50.7% | Added |
| DnB Asset Management AS | 29,760 | $625.3K | 0.00% | +6,466+27.8% | Added |
| Cerity Partners LLC | 28,856 | $606.3K | 0.00% | +2,082+7.8% | Added |
| Dimensional Fund Advisors LP | 28,312 | $594.8K | 0.00% | −93,155−76.7% | Reduced |
| Engineers Gate Manager LP | 26,265 | $551.8K | 0.01% | −153,101−85.4% | Reduced |
| Simplex Trading, LLC | 25,660 | $539.1K | 0.02% | +25,660 | New |
| Manufacturers Life Insurance Company, The | 25,461 | $534.9K | 0.00% | −3,303−11.5% | Reduced |
| New York State Common Retirement Fund | 25,384 | $533.3K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 25,340 | $532.0K | 0.00% | −202,660−88.9% | Reduced |
| Envestnet Asset Management Inc | 24,806 | $521.2K | 0.00% | +24,806 | New |
| PSP Research LLC | 24,716 | $519.3K | 0.45% | +24,716 | New |
| Creative Planning | 24,711 | $519.2K | 0.00% | +6,741+37.5% | Added |
| Walleye Capital LLC | 24,205 | $508.5K | 0.00% | −273,453−91.9% | Reduced |
| Citigroup Inc | 23,741 | $498.8K | 0.00% | +12,071+103.4% | Added |
| Police & Firemen's Retirement System of New Jersey | 23,371 | $491.0K | 0.00% | −597−2.5% | Reduced |
| Cetera Investment Advisers | 23,116 | $485.7K | 0.00% | +23,116 | New |
| HSBC Holdings PLC | 22,731 | $481.7K | 0.00% | −33,793−59.8% | Reduced |
| Arizona State Retirement System | 22,813 | $479.3K | 0.00% | −1,345−5.6% | Reduced |
| Post Resch Tallon Group Inc. | 22,800 | $479.0K | 0.40% | −3,000−11.6% | Reduced |
| Gsa Capital Partners LLP | 22,523 | $473.0K | 0.04% | +5,615+33.2% | Added |
| CWM Advisors, LLC | 22,142 | $465.2K | 0.04% | −6,691−23.2% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 20,541 | $431.6K | 0.00% | 00.0% | Unchanged |
| Quantinno Capital Management LP | 20,339 | $427.3K | 0.00% | +20,339 | New |
| Squarepoint Ops LLC | 19,814 | $416.3K | 0.00% | −15,705−44.2% | Reduced |
| Bridgefront Capital, LLC | 19,752 | $415.0K | 0.10% | −2,096−9.6% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 20,195 | $410.8K | 0.00% | +7,310+56.7% | Added |
| ProShare Advisors LLC | 19,388 | $407.3K | 0.00% | +1,749+9.9% | Added |
| State Board of Administration of Florida Retirement System | 18,968 | $398.5K | 0.00% | 00.0% | Unchanged |
| HighTower Advisors, LLC | 18,940 | $397.9K | 0.00% | +1,517+8.7% | Added |
| XTX Topco Ltd | 18,476 | $388.2K | 0.01% | −11,917−39.2% | Reduced |
| Verition Fund Management LLC | 18,460 | $387.8K | 0.00% | +1,281+7.5% | Added |
| Susquehanna International Group, LLP | 18,153 | $381.4K | 0.00% | −16,597−47.8% | Reduced |
| Mercer Global Advisors Inc | 17,805 | $374.1K | 0.00% | +17,805 | New |
| Allspring Global Investments Holdings, LLC | 17,562 | $374.1K | 0.00% | +1,455+9.0% | Added |
| KLP Kapitalforvaltning AS | 17,600 | $369.8K | 0.00% | +1,000+6.0% | Added |
| Entropy Technologies, LP | 15,064 | $316.5K | 0.02% | +15,064 | New |
| Marex Group plc | 15,060 | $316.4K | 0.00% | +15,060 | New |
| Quadrature Capital Ltd | 14,886 | $312.8K | 0.00% | −17,474−54.0% | Reduced |
| Winton Group Ltd | 14,574 | $306.2K | 0.01% | −7,947−35.3% | Reduced |
| Guggenheim Capital LLC | 14,538 | $305.4K | 0.00% | +2,395+19.7% | Added |
| BNP Paribas Arbitrage, SA | 14,228 | $298.9K | 0.00% | −585,643−97.6% | Reduced |
| China Universal Asset Management Co., Ltd. | 14,163 | $297.6K | 0.02% | −936−6.2% | Reduced |
| Lazard Asset Management LLC | 14,140 | $297.1K | 0.00% | +14,140 | New |
| Quest Partners LLC | 13,921 | $292.5K | 0.02% | −45,420−76.5% | Reduced |
| Public Employees Retirement Association of Colorado | 13,746 | $289.0K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 13,100 | $275.2K | 0.00% | −119,023−90.1% | Reduced |
| Pictet Asset Management Holding SA | 12,356 | $259.6K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 12,117 | $254.6K | 0.00% | −7,920−39.5% | Reduced |
| ADAR1 Capital Management, LLC | 12,000 | $252.1K | 0.02% | +12,000 | New |
| Group One Trading, L.P. | 11,792 | $247.8K | 0.01% | +11,792 | New |
| Raymond James Financial Inc | 11,127 | $233.8K | 0.00% | +158+1.4% | Added |
| Diversified Trust Co | 11,109 | $233.4K | 0.00% | +11,109 | New |
| Pallas Capital Advisors LLC | 10,985 | $230.8K | 0.01% | +875+8.7% | Added |
| Inceptionr LLC | 10,747 | $225.8K | 0.06% | +10,747 | New |
| Acadian Asset Management LLC | 10,169 | $213.0K | 0.00% | +8,477+501.0% | Added |
| Quarry LP | 10,000 | $210.1K | 0.03% | −25,365−71.7% | Reduced |
| Farallon Capital Management, L.L.C. | 10,000 | $210.1K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 9,707 | $203.9K | 0.00% | +9,707 | New |
| Great West Life Assurance Co | 7,182 | $151.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 7,119 | $149.6K | 0.00% | 00.0% | Unchanged |
| KBC Group NV | 5,180 | $109.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 4,844 | $101.8K | 0.00% | −8,396−63.4% | Reduced |
| Cape Investment Advisory, Inc. | 4,663 | $98.0K | 0.03% | −1,778−27.6% | Reduced |
| US Bancorp | 4,521 | $95.0K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 4,223 | $88.7K | 0.00% | +893+26.8% | Added |
| Amalgamated Bank | 2,677 | $56.0K | 0.00% | −98−3.5% | Reduced |
| Smartleaf Asset Management LLC | 2,659 | $55.1K | 0.00% | +2,564+2,698.9% | Added |
| Advisor Group Holdings, Inc. | 2,612 | $54.9K | 0.00% | −2−0.1% | Reduced |
| Larson Financial Group LLC | 2,370 | $49.8K | 0.00% | −552−18.9% | Reduced |
| The PNC Financial Services Group, Inc. | 2,079 | $43.7K | 0.00% | −59−2.8% | Reduced |
| Aquatic Capital Management LLC | 2,043 | $42.9K | 0.00% | +2,043 | New |
| GF Fund Management Co. Ltd. | 1,708 | $35.9K | 0.00% | −145−7.8% | Reduced |
| Essential Partners LLC | 1,455 | $30.6K | 0.01% | +532+57.6% | Added |
| Quantbot Technologies LP | 1,189 | $25.0K | 0.00% | −2,282−65.7% | Reduced |
| Allworth Financial LP | 1,129 | $23.7K | 0.00% | +384+51.5% | Added |
| Nisa Investment Advisors, LLC | 1,112 | $23.4K | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 1,029 | $21.6K | 0.00% | +29+2.9% | Added |
| EverSource Wealth Advisors, LLC | 987 | $20.7K | 0.00% | +374+61.0% | Added |