SYNDAX PHARMACEUTICALS INC (SNDX)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
232
Reporting holders
$2.4B
Reported value
123.5%
Of shares outstanding
1.2%
Held as options
-5
Holder change
Institutions report 110,267,636 shares against 89,297,086 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $197.2M | 9,020,006 | 0.00% | 8q | +9.3%+$16.7M |
| Kynam Capital Management, LP | $176.0M | 8,050,959 | 9.73% | 19q | HELD |
| GOLDMAN SACHS GROUP INC | $128.1M | 5,861,265 | 0.01% | 31q | +17.3%+$18.9M |
| STATE STREET CORP | $123.7M | 5,658,424 | 0.00% | 31q | +27.7%+$26.9M |
| BANK OF AMERICA CORP /DE/ | $88.4M | 4,045,094 | 0.01% | 31q | -4.8%-$4.5M |
| VANGUARD CAPITAL MANAGEMENT LLC | $85.9M | 3,927,892 | 0.00% | 2q | +2.8%+$2.3M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | $82.6M | 3,779,900 | 0.86% | 2q | HELD |
| Eversept Partners, LP | $61.2M | 2,798,210 | 3.17% | 17q | -3.0%-$1.9M |
| Palo Alto Investors LP | $56.7M | 2,594,958 | 2.61% | 26q | +200.0%+$37.8M |
| GEODE CAPITAL MANAGEMENT, LLC | $56.5M | 2,584,136 | 0.00% | 31q | +19.8%+$9.3M |
| Hood River Capital Management LLC | $56.1M | 2,564,279 | 0.41% | 3q | +8.9%+$4.6M |
| KINGDON CAPITAL MANAGEMENT, L.L.C. | $54.6M | 2,500,000 | 5.60% | 11q | HELD |
| FRANKLIN RESOURCES INC | $50.0M | 2,286,499 | 0.01% | 11q | +6.3%+$3.0M |
| MILLENNIUM MANAGEMENT LLC | $44.9M | 2,053,960 | 0.02% | 14q | +929.4%+$40.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $42.0M | 1,921,796 | 0.00% | 2q | +10.6%+$4.0M |
| SILVERARC CAPITAL MANAGEMENT, LLC | $41.7M | 1,214,390 | 4.33% | 9q | +36.6%+$11.2M |
| UBS Group AG | $41.4M | 1,893,750 | 0.01% | 31q | +64.2%+$16.2M |
| Elmind Capital, LP | $40.6M | 1,855,000 | 10.19% | 3q | HELD |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $39.1M | 1,790,173 | 0.04% | 8q | +3.3%+$1.3M |
| Candriam S.C.A. | $37.0M | 1,696,040 | 0.17% | 14q | +83.3%+$16.8M |
| Soleus Capital Management, L.P. | $35.6M | 1,628,039 | 1.23% | 15q | -5.7%-$2.2M |
| TWO SIGMA INVESTMENTS, LP | $34.5M | 1,578,125 | 0.02% | 12q | HELD |
| ORBIMED ADVISORS LLC | $33.7M | 1,542,000 | 0.62% | 2q | +60.2%+$12.7M |
| Nuveen, LLC | $29.8M | 1,364,575 | 0.01% | 6q | -8.7%-$2.8M |
| MPM BIOIMPACT LLC | $29.2M | 1,333,523 | 1.78% | 4q | -0.5%-$157.6K |
| Aisling Capital Management LP | $28.8M | 1,316,806 | 6.10% | 26q | HELD |
| Woodline Partners LP | $27.3M | 1,250,760 | 0.08% | 13q | HELD |
| D. E. Shaw & Co., Inc. | $27.1M | 1,239,954 | 0.01% | 16q | -22.6%-$7.9M |
| Catalio Capital Management, LP | $26.6M | 1,215,698 | 4.99% | 6q | +16.5%+$3.8M |
| Prosight Management, LP | $26.2M | 1,200,000 | 4.52% | 9q | +55.8%+$9.4M |
| Trails Edge Capital Partners, LP | $24.3M | 1,110,000 | 3.85% | 2q | +58.2%+$8.9M |
| ALGERT GLOBAL LLC | $23.0M | 1,051,465 | 0.27% | 19q | -43.4%-$17.6M |
| Bank of New York Mellon Corp | $22.7M | 1,040,079 | 0.00% | 31q | +3.5%+$777.8K |
| SPHERA FUNDS MANAGEMENT LTD. | $22.2M | 1,014,606 | 2.89% | 26q | +40.0%+$6.3M |
| LOOMIS SAYLES & CO L P | $20.2M | 923,624 | 0.03% | new | NEW |
| Parkman Healthcare Partners LLC | $19.2M | 877,256 | 1.96% | 13q | -2.7%-$530.2K |
| Ensign Peak Advisors, Inc | $19.0M | 867,831 | 0.03% | 27q | -56.2%-$24.4M |
| AQR CAPITAL MANAGEMENT LLC | $18.7M | 853,304 | 0.01% | 18q | -13.0%-$2.8M |
| NORTHERN TRUST CORP | $18.5M | 845,537 | 0.00% | 31q | +11.9%+$2.0M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $17.8M | 814,303 | 0.00% | 31q | +13.9%+$2.2M |
| Sixth Street Partners Management Company, L.P. | $17.8M | 814,303 | 0.00% | new | NEW |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $16.6M | 454,101 | 0.00% | 31q | +131.0%+$9.4M |
| VANGUARD FIDUCIARY TRUST CO | $13.8M | 633,509 | 0.00% | 2q | +5.5%+$721.2K |
| Verition Fund Management LLC | $13.3M | 609,878 | 0.03% | new | NEW |
| MORGAN STANLEY | $12.9M | 588,979 | 0.00% | 35q | -34.1%-$6.7M |
| Rhenman & Partners Asset Management AB | $12.2M | 560,250 | 1.16% | 10q | +47.7%+$4.0M |
| Apis Capital Advisors, LLC | $12.2M | 556,000 | 1.18% | 4q | +1.1%+$131.2K |
| PANAGORA ASSET MANAGEMENT INC | $11.9M | 546,517 | 0.04% | 4q | +119.1%+$6.5M |
| Qube Research & Technologies Ltd | $10.4M | 477,182 | 0.01% | 14q | +1223.8%+$9.6M |
| FIRST TRUST ADVISORS LP | $10.0M | 456,700 | 0.01% | new | NEW |
| Granahan Investment Management, LLC | $9.8M | 446,988 | 0.35% | 11q | +45.9%+$3.1M |
| Knott David M Jr | $9.6M | 437,245 | 5.05% | 10q | +3.6%+$333.3K |
| Jump Financial, LLC | $8.8M | 402,846 | 0.07% | new | NEW |
| Aberdeen Group plc | $8.1M | 372,766 | 0.01% | 7q | +29.9%+$1.9M |
| Squarepoint Ops LLC | $8.1M | 370,317 | 0.01% | 5q | +104.0%+$4.1M |
| JUPITER ASSET MANAGEMENT LTD | $8.0M | 366,568 | 0.04% | new | NEW |
| AMERIPRISE FINANCIAL INC | $7.6M | 346,852 | 0.00% | 13q | -39.0%-$4.8M |
| CITADEL ADVISORS LLC | $7.5M | 258,278 | 0.00% | 31q | -59.1%-$10.9M |
| Hennion & Walsh Asset Management, Inc. | $7.5M | 342,883 | 0.21% | 5q | +59.6%+$2.8M |
| Jones Hill Capital LP | $7.4M | 340,000 | 1.58% | new | NEW |
| DAFNA Capital Management LLC | $7.3M | 335,255 | 1.40% | 25q | +54.2%+$2.6M |
| ENVESTNET ASSET MANAGEMENT INC | $7.2M | 327,617 | 0.00% | 3q | +682.4%+$6.2M |
| RENAISSANCE TECHNOLOGIES LLC | $7.0M | 321,600 | 0.01% | 7q | -35.4%-$3.9M |
| CITIGROUP INC | $6.9M | 195,703 | 0.00% | 31q | +862.5%+$6.2M |
| Brevan Howard Capital Management LP | $6.8M | 309,065 | 0.05% | 8q | +50.9%+$2.3M |
| Alyeska Investment Group, L.P. | $6.7M | 308,507 | 0.02% | new | NEW |
| MACKENZIE FINANCIAL CORP | $6.1M | 280,079 | 0.01% | new | NEW |
| Trexquant Investment LP | $5.6M | 255,949 | 0.03% | 3q | +26.8%+$1.2M |
| SECTOR GAMMA AS | $5.3M | 241,739 | 1.15% | 4q | -15.5%-$967.7K |
| Schonfeld Strategic Advisors LLC | $5.2M | 236,717 | 0.02% | 15q | -9.2%-$522.7K |
| JPMORGAN CHASE & CO | $5.1M | 231,446 | 0.00% | 31q | -10.5%-$599.6K |
| Pinnacle Financial Partners, Inc. | $4.7M | 217,173 | 0.03% | 3q | +7.4%+$325.5K |
| Man Group plc | $4.7M | 213,703 | 0.01% | 7q | +17.4%+$692.7K |
| Y-Intercept (Hong Kong) Ltd | $4.6M | 212,713 | 0.09% | new | NEW |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $4.5M | 207,250 | 0.01% | 3q | -37.5%-$2.7M |
| Pictet Asset Management Holding SA | $4.5M | 207,936 | 0.00% | 5q | +1582.9%+$4.3M |
| Vienna Powszechne Towarzystwo Emerytalne S.A. Vienna Insurance Group | $4.4M | 200,000 | 1.15% | 6q | HELD |
| SEI INVESTMENTS CO | $4.2M | 193,134 | 0.00% | 13q | -11.2%-$534.8K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $3.9M | 180,000 | 0.01% | 3q | HELD |
| Swiss National Bank | $3.7M | 168,100 | 0.00% | 23q | +4.2%+$146.5K |
| Atom Investors LP | $3.6M | 162,524 | 0.32% | 3q | +4.2%+$143.4K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $3.5M | 161,323 | 0.00% | 23q | +7.7%+$252.0K |
| SummitTX Capital, L.P. | $3.1M | 140,797 | 0.08% | 6q | +112.2%+$1.6M |
| Invesco Ltd. | $3.0M | 138,060 | 0.00% | 24q | -45.4%-$2.5M |
| Russell Investments Group, Ltd. | $3.0M | 135,012 | 0.00% | 13q | +33.0%+$732.8K |
| Torray Investment Partners LLC | $2.9M | 133,835 | 0.39% | 3q | +27.6%+$633.2K |
| RHUMBLINE ADVISERS | $2.9M | 132,358 | 0.00% | 31q | +15.3%+$384.6K |
| WELLS FARGO & COMPANY/MN | $2.8M | 130,054 | 0.00% | 31q | -19.1%-$671.8K |
| Pale Fire Capital SE | $2.7M | 125,550 | 0.19% | 3q | -55.9%-$3.5M |
| CAPITAL FUND MANAGEMENT S.A. | $2.7M | 125,091 | 0.01% | 5q | -14.1%-$447.6K |
| WELLINGTON MANAGEMENT GROUP LLP | $2.7M | 124,241 | 0.00% | 31q | +0.5%+$14.3K |
| PFM Health Sciences, LP | $2.6M | 118,422 | 0.22% | 4q | -51.7%-$2.8M |
| SCHRODER INVESTMENT MANAGEMENT GROUP | $2.5M | 115,208 | 0.00% | new | NEW |
| ALLIANCEBERNSTEIN L.P. | $2.5M | 106,040 | 0.00% | 31q | -63.3%-$4.3M |
| BARCLAYS PLC | $2.1M | 48,695 | 0.00% | 31q | -3.2%-$71.8K |
| Rafferty Asset Management, LLC | $2.1M | 97,787 | 0.00% | 24q | -21.6%-$588.8K |
| DEUTSCHE BANK AG\ | $2.1M | 95,315 | 0.00% | 34q | +27.1%+$444.5K |
| HUSSMAN STRATEGIC ADVISORS, INC. | $1.8M | 84,000 | 0.42% | new | NEW |
| Assenagon Asset Management S.A. | $1.8M | 83,474 | 0.00% | 17q | +100.0%+$912.4K |
| Aquatic Capital Management LLC | $1.7M | 78,922 | 0.06% | 3q | +14.2%+$215.1K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-07 | 13G | STATE STREET CORPORATION | 6.4% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 232 | $2.4B | 110,267,636 | 34 | 90 | 77 | 1.2% |
| Q1 2026 | 237 | $2.4B | 102,609,672 | 36 | 91 | 65 | 1.0% |
| Q4 2025 | 218 | $2.1B | 100,845,278 | 28 | 73 | 76 | 2.1% |
| Q3 2025 | 219 | $1.6B | 101,655,569 | 38 | 75 | 69 | 2.2% |
| Q2 2025 | 206 | $969.2M | 101,724,116 | 30 | 80 | 63 | 2.7% |
| Q1 2025 | 209 | $1.3B | 100,012,376 | 29 | 78 | 57 | 2.0% |
| Q4 2024 | 204 | $1.3B | 97,332,461 | 27 | 80 | 56 | 1.9% |
| Q3 2024 | 193 | $1.7B | 88,528,011 | 33 | 75 | 54 | 1.8% |
| Q2 2024 | 181 | $1.8B | 87,684,281 | 21 | 81 | 50 | 0.5% |
| Q1 2024 | 175 | $2.2B | 91,976,300 | 32 | 74 | 48 | 0.8% |
| Q4 2023 | 163 | $1.9B | 89,408,910 | 28 | 77 | 37 | 1.5% |
| Q3 2023 | 157 | $1.2B | 70,923,563 | 22 | 69 | 53 | 11.2% |
| Q2 2023 | 148 | $1.4B | 69,022,229 | 23 | 73 | 39 | 0.5% |
| Q1 2023 | 140 | $1.5B | 70,916,927 | 25 | 65 | 28 | 0.4% |
| Q4 2022 | 131 | $1.7B | 66,005,906 | 27 | 55 | 31 | 0.3% |
| Q3 2022 | 140 | $1.4B | 59,902,492 | 27 | 60 | 28 | 0.4% |
| Q2 2022 | 123 | $1.1B | 55,226,017 | 12 | 44 | 35 | 0.4% |
| Q1 2022 | 137 | $950.0M | 54,572,964 | 25 | 50 | 31 | 0.2% |
| Q4 2021 | 132 | $1.2B | 53,297,973 | 26 | 42 | 31 | 0.7% |
| Q3 2021 | 124 | $939.3M | 49,078,358 | 20 | 36 | 38 | 0.1% |
| Q2 2021 | 116 | $865.2M | 50,205,142 | 11 | 53 | 31 | 0.4% |
| Q1 2021 | 133 | $1.1B | 48,482,747 | 13 | 55 | 42 | 0.9% |
| Q4 2020 | 144 | $1.1B | 46,669,789 | 52 | 51 | 23 | 1.5% |
| Q3 2020 | 102 | $507.7M | 34,234,658 | 15 | 24 | 36 | 0.5% |
| Q2 2020 | 99 | $499.8M | 32,648,217 | 29 | 47 | 12 | 3.2% |
| Q1 2020 | 86 | $234.3M | 20,769,128 | 21 | 26 | 26 | 2.8% |
| Q4 2019 | 73 | $153.9M | 16,975,084 | 12 | 20 | 19 | 3.1% |
| Q3 2019 | 75 | $134.5M | 17,142,106 | 11 | 25 | 15 | 4.8% |
| Q2 2019 | 74 | $167.4M | 17,534,333 | 12 | 33 | 13 | 2.5% |
| Q1 2019 | 70 | $89.5M | 16,968,568 | 8 | 20 | 24 | 0.4% |
| Q4 2018 | 75 | $72.0M | 15,651,292 | 2 | 0 | 3 | 3.3% |