Karyopharm Therapeutics
KPTI · NASDAQ
$0.3586+$0.0126 (+3.64%)TodayMarket closed ·
Prev close $0.346
Who owns KPTI
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 52.8% of KPTI’s shares.
- RA Capital Management, LP8.5%
- Adage Capital Management, L.P.6.7%
- Acorn Capital Advisors, LLC6.7%
- Goldman Sachs & Co. LLC6.1%
- Next 6 largest institutions24.8%
- All other shareholders47.2%
| Holder | Shares | % of shares |
|---|---|---|
| RA Capital Management, LP | 1.92M | 8.46% |
| Adage Capital Management, L.P. | 1.52M | 6.71% |
| Acorn Capital Advisors, LLC | 1.52M | 6.70% |
| Goldman Sachs & Co. LLC | 1.39M | 6.13% |
| BlackRock Institutional Trust Company, N.A. | 1.23M | 5.42% |
| Vanguard Capital Management, LLC | 958.98K | 4.23% |
| Catalio Capital Management, LP | 940.86K | 4.15% |
| Avidity Partners Management LP | 924.49K | 4.08% |
| T. Rowe Price Investment Management, Inc. | 786.31K | 3.47% |
| J. Wood Capital Advisors LLC | 784.80K | 3.46% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 677.73K | 2.99% |
| iShares Russell 2000 ETF | 488.18K | 2.15% |
| T. Rowe Price Small Cap Value Fund | 435.07K | 1.92% |
| Vanguard Extended Market Index Fund | 263.08K | 1.16% |
| Fidelity Small Cap Index Fund | 214.60K | 0.95% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $40.59K (10 trades) of KPTI on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Abate Kristin | Sale | 378 | $450 |
| Abate Kristin | Sale | 19 | $38 |
| Poulton Stuart | Sale | 189 | $1.34K |
| Su Zhen | Award | 15.51K | — |
| Oliger Christy J. | Award | 15.51K | — |
| Schor Chen | Award | 15.51K | — |
| Greene Barry E | Award | 15.51K | — |
| PAKIANATHAN DEEPIKA | Award | 15.51K | — |
| BOHLIN GAREN G | Award | 15.51K | — |
| Poulton Stuart | Sale | 403 | $3.83K |
Short interest
Settled Sep 30, 2026
- Shares short
- 6.06M
- Days to cover
- 4.79
- % of shares outstanding
- 26.73%
- Average daily volume
- 1.26M
- Change since last report
- −23.0%
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