Karyopharm Therapeutics Inc. · NASDAQ:KPTI
Karyopharm Therapeutics Inc. shareholders
As of Jun 30, 2026, 90 institutions reported holding Karyopharm Therapeutics Inc., 96.1% of its shares. Largest: Ra Capital Management, L.P., Adage Capital Partners Gp, L.L.C. and Acorn Capital Advisors, LLC. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Karyopharm Therapeutics Inc. | Change | Filed |
|---|---|---|---|---|
| Ra Capital Management, L.P. | 1.92M | 8.5% | no change | Aug 14, 2026 |
| Adage Capital Partners Gp, L.L.C. | 1.52M | 6.7% | −285K | Aug 14, 2026 |
| Acorn Capital Advisors, LLC | 1.52M | 6.7% | +1.23M | Aug 14, 2026 |
| Goldman Sachs | 1.42M | 6.3% | +477K | Aug 14, 2026 |
| BlackRock | 1.42M | 6.3% | +1.17M | Aug 7, 2026 |
| Kalehua Capital Management LLC | 1.37M | 6.0% | new | Aug 19, 2026 |
| Vanguard | 1.25M | 5.5% | +385K | Aug 13, 2026 |
| Catalio Capital Management, LP | 941K | 4.1% | +43,146 | Aug 14, 2026 |
| Avidity Partners Management LP | 924K | 4.1% | −2,995 | Aug 14, 2026 |
| T. Rowe Price | 814K | 3.6% | −739K | Aug 14, 2026 |