Filing Flows › Karyopharm Therapeutics (KPTI) › Who owns the stock
Who owns Karyopharm Therapeutics (KPTI) stock
91 funds reported Karyopharm Therapeutics (KPTI) shares in their latest 13F filings, worth $212M in all. The largest holder is RA Capital Management, L.P. ($18.7M). Last quarter 59 funds added to their stakes and 27 cut them.
Largest holders (13F)
| Fund | Shares | Value | Change | Quarter |
|---|---|---|---|---|
| RA Capital Management, L.P. | 1,917,354 | $18.7M | unchanged | 2026-06-30 |
| Adage Capital Partners GP, L.L.C. | 1,521,322 | $14.9M | decrease | 2026-06-30 |
| Acorn Capital Advisors, LLC | 1,518,113 | $14.8M | increase | 2026-06-30 |
| Goldman Sachs Group | 1,424,658 | $13.9M | increase | 2026-06-30 |
| BlackRock | 1,418,799 | $13.9M | increase | 2026-06-30 |
| Kalehua Capital Management LLC | 1,371,288 | $13.4M | new | 2026-06-30 |
| Vanguard Capital Management LLC | 958,979 | $9.4M | increase | 2026-06-30 |
| Catalio Capital Management, LP | 940,855 | $9.2M | increase | 2026-06-30 |
| Avidity Partners Management LP | 924,487 | $9.0M | decrease | 2026-06-30 |
| T. Rowe Price Investment Management | 786,309 | $7.7M | decrease | 2026-06-30 |
| Two Sigma Investments, LP | 695,264 | $6.8M | increase | 2026-06-30 |
| NEA Management Company, LLC | 576,780 | $5.6M | new | 2026-06-30 |
| Geode Capital Management, LLC | 531,231 | $5.2M | increase | 2026-06-30 |
| Ghisallo Capital Management LLC | 500,000 | $4.9M | new | 2026-06-30 |
| Soleus Capital Management, L.P. | 440,000 | $4.3M | unchanged | 2026-06-30 |
Karyopharm Therapeutics' latest quarter
Karyopharm Therapeutics, Q2 2026: revenue $33.4M (-12% year over year), operating margin -67.4%, net loss $67.0M, operating cash flow −$24.9M. The chart follows the revenue to costs, profit and cash.
Questions
Who owns the most KPTI stock?
By the latest 13F filings: RA Capital Management, L.P. ($18.7M); Adage Capital Partners GP, L.L.C. ($14.9M); Acorn Capital Advisors, LLC ($14.8M); Goldman Sachs Group ($13.9M); BlackRock ($13.9M).
What is the short interest in KPTI?
7,266,973 shares were sold short at the 2026-10-15 settlement, 19.99% of the float.
Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.