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 |
|---|---|---|---|---|---|
| Covestor Ltd | 8 | $0 | 0.00% | −29−78.4% | Reduced |
| Quadrant Capital Group LLC | 3 | $47 | 0.00% | +3 | New |
| Parkside Financial Bank & Trust | 35 | $539 | 0.00% | +35 | New |
| Farther Finance Advisors, LLC | 37 | $569 | 0.00% | +14+60.9% | Added |
| Assetmark, Inc | 40 | $615 | 0.00% | +40 | New |
| Caitong International Asset Management Co., Ltd | 47 | $723 | 0.00% | −1,230−96.3% | Reduced |
| IFP Advisors, Inc | 51 | $785 | 0.00% | +51 | Added |
| Avion Wealth | 100 | $1.00K | 0.00% | 00.0% | Unchanged |
| Massmutual Trust Co FSB | 71 | $1.09K | 0.00% | 00.0% | Unchanged |
| Bellevue Asset Management, LLC | 79 | $1.22K | 0.00% | +79 | New |
| Clearstead Advisors, LLC | 88 | $1.35K | 0.00% | +88 | New |
| Rothschild Investment LLC | 95 | $1.46K | 0.00% | +40+72.7% | Added |
| Smartleaf Asset Management LLC | 95 | $1.48K | 0.00% | +44+86.3% | Added |
| Brown Brothers Harriman & Co | 128 | $1.97K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 158 | $2.42K | 0.00% | −157−49.8% | Reduced |
| GAMMA Investing LLC | 185 | $2.85K | 0.00% | +142+330.2% | Added |
| Crowley Wealth Management, Inc. | 200 | $3.08K | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 202 | $3.11K | 0.00% | −1−0.5% | Reduced |
| Washington Trust Advisors, Inc. | 209 | $3.21K | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 209 | $3.22K | 0.00% | +184+736.0% | Added |
| Sunbelt Securities, Inc. | 230 | $3.54K | 0.00% | +230 | New |
| Steward Partners Investment Advisory, LLC | 231 | $3.55K | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 275 | $4.31K | 0.00% | 00.0% | Unchanged |
| C M Bidwell & Associates Ltd | 308 | $4.74K | 0.00% | +308 | New |
| Daiwa Securities Group Inc. | 314 | $5.00K | 0.00% | 00.0% | Unchanged |
| Truvestments Capital LLC | 331 | $5.09K | 0.00% | −495−59.9% | Reduced |
| Principal Securities, Inc. | 400 | $6.15K | 0.00% | 00.0% | Unchanged |
| Sterling Capital Management LLC | 586 | $9.02K | 0.00% | +241+69.9% | Added |
| EverSource Wealth Advisors, LLC | 613 | $9.43K | 0.00% | +599+4,278.6% | Added |
| Clear Street Markets LLC | 688 | $10.6K | 0.00% | +688 | New |
| Optiver Holding B.V. | 719 | $11.1K | 0.00% | +208+40.7% | Added |
| Comerica Bank | 719 | $11.1K | 0.00% | +707+5,891.7% | Added |
| Allworth Financial LP | 745 | $11.5K | 0.00% | +505+210.4% | Added |
| Versant Capital Management, Inc | 844 | $13.0K | 0.00% | +22+2.7% | Added |
| Essential Partners LLC | 923 | $14.2K | 0.00% | +923 | New |
| MAI Capital Management | 1,000 | $15.4K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 1,112 | $17.1K | 0.00% | +11+1.0% | Added |
| Acadian Asset Management LLC | 1,692 | $26.0K | 0.00% | +1,692 | New |
| GF Fund Management Co. Ltd. | 1,853 | $28.5K | 0.00% | −333−15.2% | Reduced |
| The PNC Financial Services Group, Inc. | 2,138 | $32.9K | 0.00% | +1,634+324.2% | Added |
| Advisor Group Holdings, Inc. | 2,614 | $40.6K | 0.00% | +731+38.8% | Added |
| Amalgamated Bank | 2,775 | $43.0K | 0.00% | 00.0% | Unchanged |
| Larson Financial Group LLC | 2,922 | $45.0K | 0.00% | +1,922+192.2% | Added |
| Mirae Asset Global Investments Co., Ltd. | 3,330 | $51.2K | 0.00% | +6+0.2% | Added |
| Quantbot Technologies LP | 3,471 | $53.4K | 0.00% | +3,471 | New |
| US Bancorp | 4,521 | $69.6K | 0.00% | +143+3.3% | Added |
| SRS Capital Advisors, Inc. | 4,897 | $75.3K | 0.00% | +4,690+2,265.7% | Added |
| FMR LLC | 5,101 | $78.5K | 0.00% | −155,817−96.8% | Reduced |
| KBC Group NV | 5,180 | $80.0K | 0.00% | 00.0% | Unchanged |
| Cape Investment Advisory, Inc. | 6,441 | $99.1K | 0.10% | +14+0.2% | Added |
| Ameritas Investment Partners, Inc. | 7,119 | $109.5K | 0.00% | −739−9.4% | Reduced |
| Great West Life Assurance Co | 7,182 | $112.0K | 0.00% | 00.0% | Unchanged |
| Jefferies Financial Group Inc. | 9,000 | $138.5K | 0.00% | −14,000−60.9% | Reduced |
| Farallon Capital Management, L.L.C. | 10,000 | $153.8K | 0.00% | 00.0% | Unchanged |
| Pallas Capital Advisors LLC | 10,110 | $155.5K | 0.01% | +10,110 | New |
| Prudential Financial Inc | 10,395 | $159.9K | 0.00% | +45+0.4% | Added |
| Virtus Investment Advisers, Inc. | 10,664 | $164.1K | 0.05% | +1,851+21.0% | Added |
| Commonwealth Equity Services, LLC | 10,906 | $168.0K | 0.00% | +10,906 | New |
| Raymond James Financial Inc | 10,969 | $168.8K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 11,670 | $179.5K | 0.00% | −100,082−89.6% | Reduced |
| Guggenheim Capital LLC | 12,143 | $186.9K | 0.00% | −605−4.7% | Reduced |
| Pictet Asset Management Holding SA | 12,356 | $190.1K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 13,240 | $203.7K | 0.01% | +4,760+56.1% | Added |
| Public Employees Retirement Association of Colorado | 13,746 | $211.0K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 12,885 | $212.0K | 0.00% | +12,885 | New |
| China Universal Asset Management Co., Ltd. | 15,099 | $232.3K | 0.02% | −2,183−12.6% | Reduced |
| Allianz Asset Management GmbH | 15,200 | $233.9K | 0.00% | +15,200 | New |
| Corton Capital Inc. | 16,267 | $250.3K | 0.62% | −1,589−8.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 16,107 | $252.6K | 0.00% | +16,107 | New |
| KLP Kapitalforvaltning AS | 16,600 | $255.4K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 16,791 | $258.3K | 0.02% | +12,464+288.1% | Added |
| Gsa Capital Partners LLP | 16,908 | $260.0K | 0.02% | −522−3.0% | Reduced |
| Verition Fund Management LLC | 17,179 | $264.3K | 0.00% | −108,166−86.3% | Reduced |
| HighTower Advisors, LLC | 17,423 | $268.1K | 0.00% | +17,423 | New |
| ProShare Advisors LLC | 17,639 | $271.4K | 0.00% | −3,047−14.7% | Reduced |
| Creative Planning | 17,970 | $276.5K | 0.00% | +2,526+16.4% | Added |
| State Board of Administration of Florida Retirement System | 18,968 | $291.8K | 0.00% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 20,037 | $308.3K | 0.00% | −3,095−13.4% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 20,541 | $316.0K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 21,175 | $326.0K | 0.00% | +12,414+141.7% | Added |
| Bridgefront Capital, LLC | 21,848 | $336.1K | 0.10% | +21,848 | New |
| Concentric Capital Strategies, LP | 21,944 | $337.6K | 0.02% | +21,944 | New |
| Winton Group Ltd | 22,521 | $346.5K | 0.01% | +22,521 | New |
| DnB Asset Management AS | 23,294 | $358.4K | 0.00% | −6,068−20.7% | Reduced |
| Mariner, LLC | 23,440 | $360.6K | 0.00% | +23,440 | New |
| Police & Firemen's Retirement System of New Jersey | 23,968 | $368.7K | 0.00% | +6,096+34.1% | Added |
| Arizona State Retirement System | 24,158 | $371.7K | 0.00% | −929−3.7% | Reduced |
| New York State Common Retirement Fund | 25,384 | $390.5K | 0.00% | 00.0% | Unchanged |
| Post Resch Tallon Group Inc. | 25,800 | $396.9K | 0.35% | +25,800 | New |
| Cerity Partners LLC | 26,774 | $411.9K | 0.00% | +26,774 | New |
| DekaBank Deutsche Girozentrale | 28,300 | $429.0K | 0.00% | 00.0% | Unchanged |
| Simplify Asset Management Inc. | 28,505 | $438.5K | 0.01% | +3,456+13.8% | Added |
| Manufacturers Life Insurance Company, The | 28,764 | $442.5K | 0.00% | −15,385−34.8% | Reduced |
| CWM Advisors, LLC | 28,833 | $443.6K | 0.04% | −14,090−32.8% | Reduced |
| XTX Topco Ltd | 30,393 | $467.6K | 0.02% | +18,434+154.1% | Added |
| Cinctive Capital Management LP | 30,440 | $468.3K | 0.02% | +30,440 | New |
| Profund Advisors LLC | 30,817 | $474.1K | 0.02% | +4,178+15.7% | Added |
| Scientech Research LLC | 30,875 | $475.0K | 0.17% | +30,875 | New |
| Phoenix Holdings Ltd. | 31,740 | $488.6K | 0.01% | −43,223−57.7% | Reduced |
| Quadrature Capital Ltd | 32,360 | $497.7K | 0.01% | +32,360 | New |