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 |
|---|---|---|---|---|---|
| Covestor Ltd | 8 | $0 | 0.00% | 00.0% | Unchanged |
| Quadrant Capital Group LLC | 3 | $64 | 0.00% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 9 | $189 | 0.00% | +9 | New |
| Clearstead Advisors, LLC | 35 | $736 | 0.00% | −53−60.2% | Reduced |
| Assetmark, Inc | 40 | $840 | 0.00% | 00.0% | Unchanged |
| SJS Investment Consulting Inc. | 55 | $1.16K | 0.00% | +55 | New |
| Massmutual Trust Co FSB | 71 | $1.49K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 79 | $1.66K | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 125 | $2.63K | 0.00% | +30+31.6% | Added |
| Brown Brothers Harriman & Co | 128 | $2.69K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 168 | $3.53K | 0.00% | −551−76.6% | Reduced |
| SBI Securities Co., Ltd. | 203 | $4.26K | 0.00% | +1+0.5% | Added |
| Daiwa Securities Group Inc. | 244 | $5.00K | 0.00% | −70−22.3% | Reduced |
| Sunbelt Securities, Inc. | 260 | $5.46K | 0.00% | +30+13.0% | Added |
| True Wealth Design, LLC | 261 | $5.48K | 0.00% | +52+24.9% | Added |
| Global Retirement Partners, LLC | 269 | $5.64K | 0.00% | +111+70.3% | Added |
| Jones Financial Companies LLLP | 275 | $5.78K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 280 | $5.88K | 0.00% | +95+51.4% | Added |
| C M Bidwell & Associates Ltd | 308 | $6.47K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 317 | $6.66K | 0.00% | −4,580−93.5% | Reduced |
| Truvestments Capital LLC | 331 | $6.95K | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 331 | $6.95K | 0.00% | +100+43.3% | Added |
| Jefferies Financial Group Inc. | 413 | $8.68K | 0.00% | −8,587−95.4% | Reduced |
| Rockefeller Capital Management L.P. | 472 | $9.92K | 0.00% | +472 | New |
| Farther Finance Advisors, LLC | 541 | $11.4K | 0.00% | +504+1,362.2% | Added |
| Comerica Bank | 719 | $15.1K | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 791 | $16.6K | 0.00% | +740+1,451.0% | Added |
| Versant Capital Management, Inc | 844 | $17.7K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 857 | $18.0K | 0.00% | +271+46.2% | Added |
| EverSource Wealth Advisors, LLC | 987 | $20.7K | 0.00% | +374+61.0% | Added |
| MAI Capital Management | 1,029 | $21.6K | 0.00% | +29+2.9% | Added |
| Nisa Investment Advisors, LLC | 1,112 | $23.4K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 1,129 | $23.7K | 0.00% | +384+51.5% | Added |
| Quantbot Technologies LP | 1,189 | $25.0K | 0.00% | −2,282−65.7% | Reduced |
| Essential Partners LLC | 1,455 | $30.6K | 0.01% | +532+57.6% | Added |
| GF Fund Management Co. Ltd. | 1,708 | $35.9K | 0.00% | −145−7.8% | Reduced |
| Aquatic Capital Management LLC | 2,043 | $42.9K | 0.00% | +2,043 | New |
| The PNC Financial Services Group, Inc. | 2,079 | $43.7K | 0.00% | −59−2.8% | Reduced |
| Larson Financial Group LLC | 2,370 | $49.8K | 0.00% | −552−18.9% | Reduced |
| Advisor Group Holdings, Inc. | 2,612 | $54.9K | 0.00% | −2−0.1% | Reduced |
| Smartleaf Asset Management LLC | 2,659 | $55.1K | 0.00% | +2,564+2,698.9% | Added |
| Amalgamated Bank | 2,677 | $56.0K | 0.00% | −98−3.5% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 4,223 | $88.7K | 0.00% | +893+26.8% | Added |
| US Bancorp | 4,521 | $95.0K | 0.00% | 00.0% | Unchanged |
| Cape Investment Advisory, Inc. | 4,663 | $98.0K | 0.03% | −1,778−27.6% | Reduced |
| Tower Research Capital LLC (TRC) | 4,844 | $101.8K | 0.00% | −8,396−63.4% | Reduced |
| KBC Group NV | 5,180 | $109.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 7,119 | $149.6K | 0.00% | 00.0% | Unchanged |
| Great West Life Assurance Co | 7,182 | $151.0K | 0.00% | 00.0% | Unchanged |
| Victory Capital Management Inc | 9,707 | $203.9K | 0.00% | +9,707 | New |
| 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 |
| Acadian Asset Management LLC | 10,169 | $213.0K | 0.00% | +8,477+501.0% | Added |
| Inceptionr LLC | 10,747 | $225.8K | 0.06% | +10,747 | New |
| Pallas Capital Advisors LLC | 10,985 | $230.8K | 0.01% | +875+8.7% | Added |
| Diversified Trust Co | 11,109 | $233.4K | 0.00% | +11,109 | New |
| Raymond James Financial Inc | 11,127 | $233.8K | 0.00% | +158+1.4% | Added |
| Group One Trading, L.P. | 11,792 | $247.8K | 0.01% | +11,792 | New |
| ADAR1 Capital Management, LLC | 12,000 | $252.1K | 0.02% | +12,000 | New |
| Teacher Retirement System of Texas | 12,117 | $254.6K | 0.00% | −7,920−39.5% | Reduced |
| Pictet Asset Management Holding SA | 12,356 | $259.6K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 13,100 | $275.2K | 0.00% | −119,023−90.1% | Reduced |
| Public Employees Retirement Association of Colorado | 13,746 | $289.0K | 0.00% | 00.0% | Unchanged |
| Quest Partners LLC | 13,921 | $292.5K | 0.02% | −45,420−76.5% | Reduced |
| Lazard Asset Management LLC | 14,140 | $297.1K | 0.00% | +14,140 | New |
| China Universal Asset Management Co., Ltd. | 14,163 | $297.6K | 0.02% | −936−6.2% | Reduced |
| BNP Paribas Arbitrage, SA | 14,228 | $298.9K | 0.00% | −585,643−97.6% | Reduced |
| Guggenheim Capital LLC | 14,538 | $305.4K | 0.00% | +2,395+19.7% | Added |
| Winton Group Ltd | 14,574 | $306.2K | 0.01% | −7,947−35.3% | Reduced |
| Quadrature Capital Ltd | 14,886 | $312.8K | 0.00% | −17,474−54.0% | Reduced |
| Marex Group plc | 15,060 | $316.4K | 0.00% | +15,060 | New |
| Entropy Technologies, LP | 15,064 | $316.5K | 0.02% | +15,064 | New |
| KLP Kapitalforvaltning AS | 17,600 | $369.8K | 0.00% | +1,000+6.0% | Added |
| Allspring Global Investments Holdings, LLC | 17,562 | $374.1K | 0.00% | +1,455+9.0% | Added |
| Mercer Global Advisors Inc | 17,805 | $374.1K | 0.00% | +17,805 | New |
| Susquehanna International Group, LLP | 18,153 | $381.4K | 0.00% | −16,597−47.8% | Reduced |
| Verition Fund Management LLC | 18,460 | $387.8K | 0.00% | +1,281+7.5% | Added |
| XTX Topco Ltd | 18,476 | $388.2K | 0.01% | −11,917−39.2% | Reduced |
| HighTower Advisors, LLC | 18,940 | $397.9K | 0.00% | +1,517+8.7% | Added |
| State Board of Administration of Florida Retirement System | 18,968 | $398.5K | 0.00% | 00.0% | Unchanged |
| ProShare Advisors LLC | 19,388 | $407.3K | 0.00% | +1,749+9.9% | Added |
| Wealth Enhancement Advisory Services, LLC | 20,195 | $410.8K | 0.00% | +7,310+56.7% | Added |
| Bridgefront Capital, LLC | 19,752 | $415.0K | 0.10% | −2,096−9.6% | Reduced |
| Squarepoint Ops LLC | 19,814 | $416.3K | 0.00% | −15,705−44.2% | Reduced |
| Quantinno Capital Management LP | 20,339 | $427.3K | 0.00% | +20,339 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 20,541 | $431.6K | 0.00% | 00.0% | Unchanged |
| CWM Advisors, LLC | 22,142 | $465.2K | 0.04% | −6,691−23.2% | Reduced |
| Gsa Capital Partners LLP | 22,523 | $473.0K | 0.04% | +5,615+33.2% | Added |
| Post Resch Tallon Group Inc. | 22,800 | $479.0K | 0.40% | −3,000−11.6% | Reduced |
| Arizona State Retirement System | 22,813 | $479.3K | 0.00% | −1,345−5.6% | Reduced |
| HSBC Holdings PLC | 22,731 | $481.7K | 0.00% | −33,793−59.8% | Reduced |
| Cetera Investment Advisers | 23,116 | $485.7K | 0.00% | +23,116 | New |
| Police & Firemen's Retirement System of New Jersey | 23,371 | $491.0K | 0.00% | −597−2.5% | Reduced |
| Citigroup Inc | 23,741 | $498.8K | 0.00% | +12,071+103.4% | Added |
| Walleye Capital LLC | 24,205 | $508.5K | 0.00% | −273,453−91.9% | Reduced |
| Creative Planning | 24,711 | $519.2K | 0.00% | +6,741+37.5% | Added |
| PSP Research LLC | 24,716 | $519.3K | 0.45% | +24,716 | New |
| Envestnet Asset Management Inc | 24,806 | $521.2K | 0.00% | +24,806 | New |
| Royal Bank of Canada | 25,340 | $532.0K | 0.00% | −202,660−88.9% | Reduced |