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, Q2 2026
Institutional positions in Syndax Pharmaceuticals Inc as of Jun 30, 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
- 242
- −2 vs. Q1 2026
- Shares held
- 108.1M
- +8.75M (+8.8%) vs. Q1 2026
- Total value
- $2.36B
- +$43.4M (+1.9%) vs. Q1 2026
- New holders
- 37
- 95 more added
- Sold out
- 39
- 77 more reduced
3 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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, Q2 2026
Shares, value and share of portfolio for each institution holding Syndax Pharmaceuticals Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Quarry LP | 1 | $22 | 0.00% | +1 | New |
| Stone House Investment Management, LLC | 2 | $44 | 0.00% | −76−97.4% | Reduced |
| SBI Securities Co., Ltd. | 2 | $44 | 0.00% | 00.0% | Unchanged |
| Hughes Financial Services, LLC | 3 | $66 | 0.00% | +1+50.0% | Added |
| Ameritas Advisory Services, LLC | 4 | $87 | 0.00% | +4 | New |
| Clearstead Advisors, LLC | 10 | $219 | 0.00% | +10 | New |
| Signaturefd, LLC | 10 | $219 | 0.00% | +10 | New |
| Financial Consulate, Inc | 15 | $328 | 0.00% | 00.0% | Unchanged |
| TD Private Client Wealth LLC | 37 | $809 | 0.00% | +37 | New |
| Assetmark, Inc | 40 | $874 | 0.00% | 00.0% | Unchanged |
| Covestor Ltd | 29 | $1.00K | 0.00% | +21+262.5% | Added |
| Caitong International Asset Management Co., Ltd | 48 | $1.05K | 0.00% | −33,149−99.9% | Reduced |
| Massmutual Trust Co FSB | 71 | $1.55K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 74 | $1.62K | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 100 | $2.00K | 0.00% | 00.0% | Unchanged |
| Rothschild Investment LLC | 113 | $2.47K | 0.00% | −182−61.7% | Reduced |
| SJS Investment Consulting Inc. | 119 | $2.60K | 0.00% | +37+45.1% | Added |
| Brown Brothers Harriman & Co | 128 | $2.80K | 0.00% | 00.0% | Unchanged |
| Global Retirement Partners, LLC | 158 | $3.44K | 0.00% | +158 | New |
| Silver Grove Financial Group, Inc. | 196 | $4.29K | 0.00% | +196 | New |
| True Wealth Design, LLC | 228 | $4.99K | 0.00% | −33−12.6% | Reduced |
| Optiver Holding B.V. | 230 | $5.03K | 0.00% | −113−32.9% | Reduced |
| Sterling Capital Management LLC | 313 | $6.84K | 0.00% | −397−55.9% | Reduced |
| State of Wyoming | 340 | $7.43K | 0.00% | +340 | New |
| GAMMA Investing LLC | 417 | $9.12K | 0.00% | +25+6.4% | Added |
| Farther Finance Advisors, LLC | 426 | $9.31K | 0.00% | −152−26.3% | Reduced |
| Harbour Investments, Inc. | 474 | $10.4K | 0.00% | +474 | New |
| Essential Partners LLC | 598 | $13.1K | 0.01% | −849−58.7% | Reduced |
| Nisa Investment Advisors, LLC | 600 | $13.1K | 0.00% | −533−47.0% | Reduced |
| IFP Advisors, Inc | 669 | $14.6K | 0.00% | −122−15.4% | Reduced |
| Fifth Third Bancorp | 687 | $15.0K | 0.00% | −311−31.2% | Reduced |
| Hickory Point Bank & Trust | 750 | $16.4K | 0.01% | 00.0% | Unchanged |
| Kemnay Advisory Services Inc. | 787 | $17.2K | 0.00% | +70+9.8% | Added |
| Versant Capital Management, Inc | 844 | $18.4K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 873 | $19.1K | 0.00% | −142−14.0% | Reduced |
| Steward Partners Investment Advisory, LLC | 931 | $20.4K | 0.00% | +600+181.3% | Added |
| Allworth Financial LP | 1,169 | $25.6K | 0.00% | −517−30.7% | Reduced |
| Pacer Advisors, Inc. | 1,633 | $36.0K | 0.00% | +1,633 | New |
| GF Fund Management Co. Ltd. | 1,868 | $40.8K | 0.00% | −84−4.3% | Reduced |
| The PNC Financial Services Group, Inc. | 2,085 | $45.6K | 0.00% | −10.0% | Reduced |
| Jones Financial Companies LLLP | 2,300 | $49.0K | 0.00% | +1,711+290.5% | Added |
| Larson Financial Group LLC | 2,313 | $50.6K | 0.00% | −281−10.8% | Reduced |
| Smartleaf Asset Management LLC | 2,579 | $56.2K | 0.00% | 00.0% | Unchanged |
| Simplex Trading, LLC | 2,991 | $65.4K | 0.00% | −17,834−85.6% | Reduced |
| Advisor Group Holdings, Inc. | 2,992 | $65.4K | 0.00% | +732+32.4% | Added |
| KBC Group NV | 3,062 | $67.0K | 0.00% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 3,153 | $68.9K | 0.06% | +3,153 | New |
| Rockefeller Capital Management L.P. | 3,209 | $70.1K | 0.00% | 00.0% | Unchanged |
| Nykredit A/S | 3,279 | $71.7K | 0.00% | +3,279 | New |
| Cape Investment Advisory, Inc. | 3,709 | $81.1K | 0.02% | +3,709 | New |
| Mirae Asset Global Investments Co., Ltd. | 3,963 | $86.6K | 0.00% | −637−13.8% | Reduced |
| US Bancorp | 4,544 | $99.3K | 0.00% | −29−0.6% | Reduced |
| Group One Trading, L.P. | 4,861 | $106.3K | 0.00% | +4,861 | New |
| FMR LLC | 5,574 | $121.9K | 0.00% | −168,419−96.8% | Reduced |
| Walleye Capital LLC | 5,636 | $123.2K | 0.00% | −379,337−98.5% | Reduced |
| Tower Research Capital LLC (TRC) | 5,743 | $125.5K | 0.00% | −8,689−60.2% | Reduced |
| SRS Capital Advisors, Inc. | 6,812 | $148.9K | 0.00% | +6,227+1,064.4% | Added |
| Great West Life Assurance Co | 7,182 | $157.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 8,081 | $176.7K | 0.00% | +962+13.5% | Added |
| Allianz Asset Management GmbH | 9,300 | $203.3K | 0.00% | +9,300 | New |
| Bridgefront Capital, LLC | 9,386 | $205.2K | 0.05% | −21,715−69.8% | Reduced |
| Pallas Capital Advisors LLC | 9,460 | $206.8K | 0.01% | −256−2.6% | Reduced |
| Teacher Retirement System of Texas | 9,743 | $213.0K | 0.00% | −797−7.6% | Reduced |
| Velan Capital Investment Management LP | 10,000 | $218.6K | 0.13% | 00.0% | Unchanged |
| Bank of Montreal | 12,138 | $265.3K | 0.00% | −3,104−20.4% | Reduced |
| Letko, Brosseau & Associates Inc | 12,450 | $272.2K | 0.00% | +12,450 | New |
| Post Resch Tallon Group Inc. | 12,500 | $273.3K | 0.19% | 00.0% | Unchanged |
| Wedbush Securities Inc | 12,705 | $278.0K | 0.01% | +3,651+40.3% | Added |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 12,755 | $278.8K | 0.08% | +12,755 | New |
| VARCOV Co. | 12,972 | $283.6K | 0.11% | +12,972 | New |
| Public Employees Retirement Association of Colorado | 13,746 | $300.0K | 0.00% | 00.0% | Unchanged |
| E Fund Management Co., Ltd. | 13,788 | $301.4K | 0.01% | −1,890−12.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 14,102 | $308.3K | 0.02% | −1,550−9.9% | Reduced |
| ProShare Advisors LLC | 14,564 | $318.4K | 0.00% | −1,858−11.3% | Reduced |
| Prudential Financial Inc | 14,680 | $320.9K | 0.00% | +1,270+9.5% | Added |
| Sectoral Asset Management Inc | 15,680 | $342.8K | 0.24% | −16,000−50.5% | Reduced |
| Guggenheim Capital LLC | 15,785 | $345.1K | 0.00% | −271−1.7% | Reduced |
| KLP Kapitalforvaltning AS | 17,600 | $384.7K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 17,623 | $385.2K | 0.00% | −21,460−54.9% | Reduced |
| Mercer Global Advisors Inc | 18,490 | $404.2K | 0.00% | −5,147−21.8% | Reduced |
| State Board of Administration of Florida Retirement System | 18,968 | $414.6K | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 20,166 | $421.3K | 0.00% | +602+3.1% | Added |
| Vanguard Investments Australia, Ltd. | 19,585 | $428.1K | 0.00% | 00.0% | Unchanged |
| Graham Capital Management, L.P. | 19,615 | $428.8K | 0.01% | +19,615 | New |
| PSP Research LLC | 20,000 | $437.2K | 0.23% | 00.0% | Unchanged |
| HSBC Holdings PLC | 20,539 | $456.8K | 0.00% | −2,922−12.5% | Reduced |
| Virginia Retirement Systems Et Al | 21,000 | $459.1K | 0.00% | +21,000 | New |
| Engineers Gate Manager LP | 21,401 | $467.8K | 0.01% | −17,007−44.3% | Reduced |
| Wealth Enhancement Advisory Services, LLC | 19,950 | $471.0K | 0.00% | −2,595−11.5% | Reduced |
| Harbour Capital Advisors, LLC | 20,650 | $487.5K | 0.09% | +7,000+51.3% | Added |
| DnB Asset Management AS | 22,514 | $492.2K | 0.00% | +5,862+35.2% | Added |
| Inceptionr LLC | 22,691 | $496.0K | 0.12% | +22,691 | New |
| Arizona State Retirement System | 23,120 | $505.4K | 0.00% | +642+2.9% | Added |
| Creative Planning | 23,415 | $511.9K | 0.00% | −8,487−26.6% | Reduced |
| Los Angeles Capital Management LLC | 23,850 | $521.4K | 0.00% | −4,688−16.4% | Reduced |
| Intech Investment Management LLC | 24,760 | $541.3K | 0.00% | −5,540−18.3% | Reduced |
| Magnetar Financial LLC | 24,891 | $544.1K | 0.00% | +14,100+130.7% | Added |
| Marex Group plc | 25,260 | $552.2K | 0.00% | +5,200+25.9% | Added |
| Police & Firemen's Retirement System of New Jersey | 26,262 | $574.1K | 0.00% | +2,891+12.4% | Added |
| Entropy Technologies, LP | 26,453 | $578.3K | 0.02% | +26,453 | New |