Ticker · CUSIP 48576U205
Holders (tracked)
7
Combined shares
368,024
Combined value
$2.71M
Last close
$8.61
Quarter
2025Q4
Price · 1Y$8.61+3.66 (+73.94%)H $10.09 · L $3.77 · Avg Vol 385K
Position opened
Tracked holders · last 8 quarters
+3 vs previous quarter over the last 4.
Price is +16.9% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
6 events
- +31,709 shares · 2025Q4Position
- Two Sigma Investments opened position2026-02-17+148,793 shares · 2025Q4Position
- +12,922 shares · 2025Q4Position
- Renaissance Technologies trimmed2026-02-12−4,800 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) exited2025-11-14−31,847 shares · 2025Q3Position
- Renaissance Technologies trimmed2025-11-13−1,100 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of KPTI…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Renaissance Technologies | 2025Q1 | $3.78 | +127.8% | $516K |
| T. Rowe Price | 2025Q2 | $4.32 | +99.4% | $94K |
| Ken Griffin (Citadel Advisors) | 2025Q1 | $6.65 | +29.5% | $614K |
| Ken Griffin (Citadel Advisors) | 2025Q1 | $6.65 | +29.5% | $614K |
| Ken Griffin (Citadel Advisors) | 2025Q1 | $6.65 | +29.5% | $614K |
| Two Sigma Investments | 2025Q4 | $7.36 | +17.0% | $1.3M |
| Paul Tudor Jones (Tudor Investment) | 2025Q4 | $7.36 | +17.0% | $111K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions3
- Two Sigma Investments+148,793$1.1M
- Ken Griffin (Citadel Advisors)+31,709$233K
- Paul Tudor Jones (Tudor Investment)+12,922$95K
Added to0
—
Trimmed1
- Renaissance Technologies−4,800$35K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2025Q1 | 5 | $1.3M |
| 2025Q2 | 5 | $1.4M |
| 2025Q3 | 4 | $1.1M |
| 2025Q4 | 7 | $2.7M |
Who owns KPTI
7 super-investors · 2025Q4
Tracked stake
368.0K
shares
Combined value
$3M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New5Trim1Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Two Sigma Investments | 148.8K | $1M |
| 2 | Ken Griffin Citadel Advisors | 71.3K | $525K |
| 3 | Renaissance Technologies | 59.9K | $441K |
| 4 | Ken Griffin Citadel Advisors | 32.5K | $239K |
| 5 | Ken Griffin Citadel Advisors | 31.7K | $233K |
| 6 | Paul Tudor Jones Tudor Investment | 12.9K | $95K |
| 7 | T. Rowe Price | 10.9K | $81K |
Recent moves
11 transactions
- +148,793 · 2025Q4
- +12,922 · 2025Q4
- +31,709 · 2025Q4
- −4,800 · 2025Q4
- −31,847 · 2025Q3
- −1,100 · 2025Q3
- +10,886 · 2025Q2
- −23,520 · 2025Q2
- +4,600 · 2025Q2
- +55,367 · 2025Q1
- +61,214 · 2025Q1
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