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, Q1 2026
Institutional positions in Syndax Pharmaceuticals Inc as of Mar 31, 2026. 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
- 247
- +20 vs. Q4 2025
- Shares held
- 99.4M
- +5.70M (+6.1%) vs. Q4 2025
- Total value
- $2.32B
- +$352.9M (+17.9%) vs. Q4 2025
- New holders
- 45
- 99 more added
- Sold out
- 25
- 68 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Covestor Ltd | 8 | $0 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 2 | $47 | 0.00% | −201−99.0% | Reduced |
| Hughes Financial Services, LLC | 2 | $47 | 0.00% | +2 | New |
| Quadrant Capital Group LLC | 3 | $71 | 0.00% | 00.0% | Unchanged |
| Keating Financial Advisory Services, Inc. | 4 | $93 | 0.00% | +4 | New |
| JPL Wealth Management, LLC | 5 | $117 | 0.00% | +5 | New |
| Financial Consulate, Inc | 15 | $351 | 0.00% | +15 | New |
| Bare Financial Services, Inc | 23 | $537 | 0.00% | +23 | New |
| Assetmark, Inc | 40 | $934 | 0.00% | 00.0% | Unchanged |
| Basecamp Wealth Advisors LLC | 59 | $1.38K | 0.00% | +50+555.6% | Added |
| Massmutual Trust Co FSB | 71 | $1.66K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 74 | $1.73K | 0.00% | +74 | New |
| Stone House Investment Management, LLC | 78 | $1.82K | 0.00% | +78 | New |
| SJS Investment Consulting Inc. | 82 | $1.92K | 0.00% | +27+49.1% | Added |
| Avion Wealth | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| Wealth Preservation Advisors, LLC | 104 | $2.43K | 0.00% | +104 | New |
| Brown Brothers Harriman & Co | 128 | $2.99K | 0.00% | 00.0% | Unchanged |
| Root Financial Partners, LLC | 171 | $4.00K | 0.00% | +171 | New |
| Truvestments Capital LLC | 177 | $4.13K | 0.00% | −154−46.5% | Reduced |
| Sunbelt Securities, Inc. | 260 | $6.07K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 261 | $6.10K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 295 | $6.89K | 0.00% | +170+136.0% | Added |
| Steward Partners Investment Advisory, LLC | 331 | $7.73K | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 343 | $8.01K | 0.00% | +175+104.2% | Added |
| GAMMA Investing LLC | 392 | $9.16K | 0.00% | +112+40.0% | Added |
| Walleye Trading LLC | 416 | $9.72K | 0.00% | +416 | New |
| SRS Capital Advisors, Inc. | 585 | $13.6K | 0.00% | +268+84.5% | Added |
| Farther Finance Advisors, LLC | 578 | $13.8K | 0.00% | +37+6.8% | Added |
| Jones Financial Companies LLLP | 589 | $13.8K | 0.00% | +314+114.2% | Added |
| Sterling Capital Management LLC | 710 | $16.6K | 0.00% | −147−17.2% | Reduced |
| Kemnay Advisory Services Inc. | 717 | $16.7K | 0.00% | +717 | New |
| Hickory Point Bank & Trust | 750 | $17.5K | 0.01% | +750 | New |
| IFP Advisors, Inc | 791 | $18.5K | 0.00% | 00.0% | Unchanged |
| Versant Capital Management, Inc | 844 | $19.7K | 0.00% | 00.0% | Unchanged |
| Fifth Third Bancorp | 998 | $23.3K | 0.00% | +998 | New |
| EverSource Wealth Advisors, LLC | 1,015 | $23.7K | 0.00% | +28+2.8% | Added |
| Nisa Investment Advisors, LLC | 1,133 | $26.5K | 0.00% | +21+1.9% | Added |
| Essential Partners LLC | 1,447 | $33.8K | 0.01% | −8−0.5% | Reduced |
| Allworth Financial LP | 1,686 | $39.4K | 0.00% | +557+49.3% | Added |
| GF Fund Management Co. Ltd. | 1,952 | $45.6K | 0.00% | +244+14.3% | Added |
| The PNC Financial Services Group, Inc. | 2,086 | $48.7K | 0.00% | +7+0.3% | Added |
| MAI Capital Management | 2,161 | $50.5K | 0.00% | +1,132+110.0% | Added |
| Advisor Group Holdings, Inc. | 2,260 | $52.8K | 0.00% | −352−13.5% | Reduced |
| Quantbot Technologies LP | 2,350 | $54.9K | 0.00% | +1,161+97.6% | Added |
| Smartleaf Asset Management LLC | 2,579 | $58.0K | 0.00% | −80−3.0% | Reduced |
| Larson Financial Group LLC | 2,594 | $60.6K | 0.00% | +224+9.5% | Added |
| Acadian Asset Management LLC | 2,892 | $67.0K | 0.00% | −7,277−71.6% | Reduced |
| KBC Group NV | 3,062 | $72.0K | 0.00% | −2,118−40.9% | Reduced |
| Rockefeller Capital Management L.P. | 3,209 | $75.0K | 0.00% | +2,737+579.9% | Added |
| US Bancorp | 4,573 | $106.8K | 0.00% | +52+1.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 4,600 | $107.5K | 0.00% | +377+8.9% | Added |
| Ameritas Investment Partners, Inc. | 7,119 | $166.3K | 0.01% | 00.0% | Unchanged |
| Great West Life Assurance Co | 7,182 | $169.0K | 0.00% | 00.0% | Unchanged |
| Wedbush Securities Inc | 9,054 | $212.0K | 0.01% | +9,054 | New |
| Captrust Financial Advisors | 9,563 | $223.3K | 0.00% | +9,563 | New |
| Pallas Capital Advisors LLC | 9,716 | $227.0K | 0.01% | −1,269−11.6% | Reduced |
| Commonwealth Equity Services, LLC | 9,775 | $228.3K | 0.00% | +9,775 | New |
| Velan Capital Investment Management LP | 10,000 | $233.6K | 0.15% | −120,000−92.3% | Reduced |
| Farallon Capital Management, L.L.C. | 10,000 | $233.6K | 0.00% | 00.0% | Unchanged |
| Winton Group Ltd | 10,300 | $240.6K | 0.01% | −4,274−29.3% | Reduced |
| Teacher Retirement System of Texas | 10,540 | $246.2K | 0.00% | −1,577−13.0% | Reduced |
| Magnetar Financial LLC | 10,791 | $252.1K | 0.00% | +10,791 | New |
| Merit Financial Group, LLC | 10,954 | $255.9K | 0.00% | +10,954 | New |
| Quadrature Capital Ltd | 12,129 | $283.3K | 0.00% | −2,757−18.5% | Reduced |
| Pictet Asset Management Holding SA | 12,356 | $288.6K | 0.00% | 00.0% | Unchanged |
| Bleakley Financial Group, LLC | 12,488 | $291.7K | 0.00% | +12,488 | New |
| Harbour Capital Advisors, LLC | 13,650 | $301.4K | 0.06% | +13,650 | New |
| Post Resch Tallon Group Inc. | 12,500 | $302.4K | 0.24% | −10,300−45.2% | Reduced |
| Two Sigma Securities, LLC | 13,009 | $303.9K | 0.04% | +13,009 | New |
| Prudential Financial Inc | 13,410 | $313.3K | 0.00% | +13,410 | New |
| Diversified Trust Co | 13,660 | $319.1K | 0.01% | +2,551+23.0% | Added |
| Public Employees Retirement Association of Colorado | 13,746 | $321.0K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 13,841 | $323.3K | 0.00% | +2,714+24.4% | Added |
| Tower Research Capital LLC (TRC) | 14,432 | $337.1K | 0.01% | +9,588+197.9% | Added |
| Bank of Montreal | 15,242 | $356.1K | 0.00% | +15,242 | New |
| China Universal Asset Management Co., Ltd. | 15,652 | $365.6K | 0.03% | +1,489+10.5% | Added |
| E Fund Management Co., Ltd. | 15,678 | $366.2K | 0.01% | +15,678 | New |
| Guggenheim Capital LLC | 16,056 | $375.1K | 0.00% | +1,518+10.4% | Added |
| ProShare Advisors LLC | 16,422 | $383.6K | 0.00% | −2,966−15.3% | Reduced |
| DnB Asset Management AS | 16,652 | $389.0K | 0.00% | −13,108−44.0% | Reduced |
| ADAR1 Capital Management, LLC | 17,500 | $408.8K | 0.02% | +5,500+45.8% | Added |
| KLP Kapitalforvaltning AS | 17,600 | $411.1K | 0.00% | 00.0% | Unchanged |
| Axq Capital, LP | 18,340 | $428.4K | 0.06% | +18,340 | New |
| State Board of Administration of Florida Retirement System | 18,968 | $443.1K | 0.00% | 00.0% | Unchanged |
| Vanguard Investments Australia, Ltd. | 19,585 | $457.5K | 0.00% | +19,585 | New |
| Allspring Global Investments Holdings, LLC | 19,564 | $467.2K | 0.00% | +2,002+11.4% | Added |
| PSP Research LLC | 20,000 | $467.2K | 0.33% | −4,716−19.1% | Reduced |
| Marex Group plc | 20,060 | $468.6K | 0.00% | +5,000+33.2% | Added |
| Citigroup Inc | 20,332 | $475.0K | 0.00% | −3,409−14.4% | Reduced |
| Simplex Trading, LLC | 20,825 | $486.5K | 0.02% | −4,835−18.8% | Reduced |
| Fox Run Management, L.L.C. | 21,993 | $494.4K | 0.09% | −18,309−45.4% | Reduced |
| CWM Advisors, LLC | 22,031 | $514.6K | 0.03% | −111−0.5% | Reduced |
| Arizona State Retirement System | 22,478 | $525.1K | 0.00% | −335−1.5% | Reduced |
| Quantinno Capital Management LP | 22,576 | $527.4K | 0.00% | +2,237+11.0% | Added |
| Cetera Investment Advisers | 22,759 | $531.6K | 0.00% | −357−1.5% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 23,371 | $545.9K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 23,381 | $546.0K | 0.00% | −1,959−7.7% | Reduced |
| Mercer Global Advisors Inc | 23,637 | $552.2K | 0.00% | +5,832+32.8% | Added |
| HSBC Holdings PLC | 23,461 | $555.6K | 0.00% | +730+3.2% | Added |
| Wealth Enhancement Advisory Services, LLC | 22,545 | $567.0K | 0.00% | +2,350+11.6% | Added |