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 |
|---|---|---|---|---|---|
| Winton Group Ltd | 76,500 | $1.67M | 0.05% | +66,200+642.7% | Added |
| Seven Fleet Capital Management LP | 77,930 | $1.65M | 0.27% | +77,930 | New |
| Toroso Investments, LLC | 72,212 | $1.58M | 0.00% | +6,886+10.5% | Added |
| Tema ETFs LLC | 72,212 | $1.58M | 0.05% | +13,864+23.8% | Added |
| 1492 Capital Management LLC | 66,997 | $1.46M | 0.43% | +66,997 | New |
| Legal & General Group Plc | 65,483 | $1.43M | 0.00% | +6,425+10.9% | Added |
| Virtus Investment Advisers, Inc. | 63,720 | $1.39M | 0.32% | +22,275+53.7% | Added |
| Gsa Capital Partners LLP | 62,775 | $1.37M | 0.09% | +14,221+29.3% | Added |
| Pavaki Capital Management LLC | 60,000 | $1.31M | 0.75% | 00.0% | Unchanged |
| XTX Topco Ltd | 59,164 | $1.29M | 0.02% | −19,843−25.1% | Reduced |
| Vanguard Asset Management, Ltd | 58,406 | $1.28M | 0.00% | +6,309+12.1% | Added |
| Headlands Technologies LLC | 56,227 | $1.23M | 0.13% | +30,835+121.4% | Added |
| Ieq Capital, LLC | 54,835 | $1.20M | 0.01% | −54,788−50.0% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 52,360 | $1.14M | 0.00% | +3,133+6.4% | Added |
| MetLife Investment Management | 51,930 | $1.14M | 0.01% | +5,092+10.9% | Added |
| Profund Advisors LLC | 49,412 | $1.08M | 0.03% | −6,492−11.6% | Reduced |
| Barclays PLC | 48,695 | $1.06M | 0.00% | −1,628−3.2% | Reduced |
| State of Wisconsin Investment Board | 45,209 | $988.3K | 0.00% | −637−1.4% | Reduced |
| Manufacturers Life Insurance Company, The | 44,305 | $968.5K | 0.00% | +4,401+11.0% | Added |
| Stifel Financial Corp | 43,714 | $955.6K | 0.00% | +2,000+4.8% | Added |
| Assenagon Asset Management S.A. | 41,737 | $912.4K | 0.00% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 40,891 | $893.9K | 0.00% | +40,891 | New |
| HighTower Advisors, LLC | 39,355 | $860.3K | 0.00% | +2,324+6.3% | Added |
| Jupiter Topco LLC | 39,335 | $860.1K | 0.00% | +39,335 | New |
| Mariner, LLC | 38,128 | $833.4K | 0.00% | −35,071−47.9% | Reduced |
| Victory Capital Management Inc | 37,928 | $829.1K | 0.00% | −403−1.1% | Reduced |
| Palumbo Wealth Management LLC | 37,631 | $822.6K | 0.17% | +448+1.2% | Added |
| Wesbanco Bank Inc | 37,000 | $808.8K | 0.02% | 00.0% | Unchanged |
| Voya Investment Management LLC | 36,874 | $806.1K | 0.00% | −16,203−30.5% | Reduced |
| Cetera Investment Advisers | 36,443 | $796.6K | 0.00% | +13,684+60.1% | Added |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 36,151 | $790.3K | 0.00% | +11,412+46.1% | Added |
| Lion Point Capital, LP | 36,000 | $787.0K | 3.76% | 00.0% | Unchanged |
| Vanguard Global Advisers, LLC | 34,371 | $751.4K | 0.00% | −3,044−8.1% | Reduced |
| BNP Paribas Arbitrage, SA | 32,601 | $712.7K | 0.00% | −7,780−19.3% | Reduced |
| Diversified Trust Co | 32,420 | $708.7K | 0.01% | +18,760+137.3% | Added |
| New York State Common Retirement Fund | 31,284 | $683.9K | 0.00% | +5,900+23.2% | Added |
| SG Americas Securities, LLC | 31,254 | $683.0K | 0.00% | −7,294−18.9% | Reduced |
| CWM Advisors, LLC | 30,965 | $676.9K | 0.03% | +8,934+40.6% | Added |
| Royal Bank of Canada | 30,555 | $667.0K | 0.00% | +7,174+30.7% | Added |
| Quantinno Capital Management LP | 30,440 | $665.4K | 0.00% | +7,864+34.8% | Added |
| Twinbeech Capital LP | 28,077 | $613.8K | 0.11% | −61,929−68.8% | Reduced |
| State of New Jersey Common Pension Fund D | 27,093 | $592.3K | 0.00% | −875−3.1% | Reduced |
| Entropy Technologies, LP | 26,453 | $578.3K | 0.02% | +26,453 | New |
| Police & Firemen's Retirement System of New Jersey | 26,262 | $574.1K | 0.00% | +2,891+12.4% | Added |
| Marex Group plc | 25,260 | $552.2K | 0.00% | +5,200+25.9% | Added |
| Magnetar Financial LLC | 24,891 | $544.1K | 0.00% | +14,100+130.7% | Added |
| Intech Investment Management LLC | 24,760 | $541.3K | 0.00% | −5,540−18.3% | Reduced |
| Los Angeles Capital Management LLC | 23,850 | $521.4K | 0.00% | −4,688−16.4% | Reduced |
| Creative Planning | 23,415 | $511.9K | 0.00% | −8,487−26.6% | Reduced |
| Arizona State Retirement System | 23,120 | $505.4K | 0.00% | +642+2.9% | Added |
| Inceptionr LLC | 22,691 | $496.0K | 0.12% | +22,691 | New |
| DnB Asset Management AS | 22,514 | $492.2K | 0.00% | +5,862+35.2% | Added |
| Harbour Capital Advisors, LLC | 20,650 | $487.5K | 0.09% | +7,000+51.3% | Added |
| Wealth Enhancement Advisory Services, LLC | 19,950 | $471.0K | 0.00% | −2,595−11.5% | Reduced |
| Engineers Gate Manager LP | 21,401 | $467.8K | 0.01% | −17,007−44.3% | Reduced |
| Virginia Retirement Systems Et Al | 21,000 | $459.1K | 0.00% | +21,000 | New |
| HSBC Holdings PLC | 20,539 | $456.8K | 0.00% | −2,922−12.5% | Reduced |
| PSP Research LLC | 20,000 | $437.2K | 0.23% | 00.0% | Unchanged |
| Graham Capital Management, L.P. | 19,615 | $428.8K | 0.01% | +19,615 | New |
| Vanguard Investments Australia, Ltd. | 19,585 | $428.1K | 0.00% | 00.0% | Unchanged |
| Allspring Global Investments Holdings, LLC | 20,166 | $421.3K | 0.00% | +602+3.1% | Added |
| State Board of Administration of Florida Retirement System | 18,968 | $414.6K | 0.00% | 00.0% | Unchanged |
| Mercer Global Advisors Inc | 18,490 | $404.2K | 0.00% | −5,147−21.8% | Reduced |
| Cerity Partners LLC | 17,623 | $385.2K | 0.00% | −21,460−54.9% | Reduced |
| KLP Kapitalforvaltning AS | 17,600 | $384.7K | 0.00% | 00.0% | Unchanged |
| Guggenheim Capital LLC | 15,785 | $345.1K | 0.00% | −271−1.7% | Reduced |
| Sectoral Asset Management Inc | 15,680 | $342.8K | 0.24% | −16,000−50.5% | Reduced |
| Prudential Financial Inc | 14,680 | $320.9K | 0.00% | +1,270+9.5% | Added |
| ProShare Advisors LLC | 14,564 | $318.4K | 0.00% | −1,858−11.3% | Reduced |
| China Universal Asset Management Co., Ltd. | 14,102 | $308.3K | 0.02% | −1,550−9.9% | Reduced |
| E Fund Management Co., Ltd. | 13,788 | $301.4K | 0.01% | −1,890−12.1% | Reduced |
| Public Employees Retirement Association of Colorado | 13,746 | $300.0K | 0.00% | 00.0% | Unchanged |
| VARCOV Co. | 12,972 | $283.6K | 0.11% | +12,972 | New |
| Arrowpoint Investment Partners (Singapore) Pte. Ltd. | 12,755 | $278.8K | 0.08% | +12,755 | New |
| Wedbush Securities Inc | 12,705 | $278.0K | 0.01% | +3,651+40.3% | Added |
| Post Resch Tallon Group Inc. | 12,500 | $273.3K | 0.19% | 00.0% | Unchanged |
| Letko, Brosseau & Associates Inc | 12,450 | $272.2K | 0.00% | +12,450 | New |
| Bank of Montreal | 12,138 | $265.3K | 0.00% | −3,104−20.4% | Reduced |
| Velan Capital Investment Management LP | 10,000 | $218.6K | 0.13% | 00.0% | Unchanged |
| Teacher Retirement System of Texas | 9,743 | $213.0K | 0.00% | −797−7.6% | Reduced |
| Pallas Capital Advisors LLC | 9,460 | $206.8K | 0.01% | −256−2.6% | Reduced |
| Bridgefront Capital, LLC | 9,386 | $205.2K | 0.05% | −21,715−69.8% | Reduced |
| Allianz Asset Management GmbH | 9,300 | $203.3K | 0.00% | +9,300 | New |
| Ameritas Investment Partners, Inc. | 8,081 | $176.7K | 0.00% | +962+13.5% | Added |
| Great West Life Assurance Co | 7,182 | $157.0K | 0.00% | 00.0% | Unchanged |
| SRS Capital Advisors, Inc. | 6,812 | $148.9K | 0.00% | +6,227+1,064.4% | Added |
| Tower Research Capital LLC (TRC) | 5,743 | $125.5K | 0.00% | −8,689−60.2% | Reduced |
| Walleye Capital LLC | 5,636 | $123.2K | 0.00% | −379,337−98.5% | Reduced |
| FMR LLC | 5,574 | $121.9K | 0.00% | −168,419−96.8% | Reduced |
| Group One Trading, L.P. | 4,861 | $106.3K | 0.00% | +4,861 | New |
| US Bancorp | 4,544 | $99.3K | 0.00% | −29−0.6% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 3,963 | $86.6K | 0.00% | −637−13.8% | Reduced |
| Cape Investment Advisory, Inc. | 3,709 | $81.1K | 0.02% | +3,709 | New |
| Nykredit A/S | 3,279 | $71.7K | 0.00% | +3,279 | New |
| Rockefeller Capital Management L.P. | 3,209 | $70.1K | 0.00% | 00.0% | Unchanged |
| Bayforest Capital Ltd | 3,153 | $68.9K | 0.06% | +3,153 | New |
| KBC Group NV | 3,062 | $67.0K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 2,992 | $65.4K | 0.00% | +732+32.4% | Added |
| Simplex Trading, LLC | 2,991 | $65.4K | 0.00% | −17,834−85.6% | Reduced |
| Smartleaf Asset Management LLC | 2,579 | $56.2K | 0.00% | 00.0% | Unchanged |