Ticker · CUSIP 471871202
Holders (tracked)
4
Combined shares
1,374,166
Combined value
$2.51M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-2 vs previous quarter over the last 8.
SEC event timeline
8 events
- Two Sigma Investments exited2026-02-17−40,427 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) exited2026-02-17−589,449 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) added2026-02-17+708,844 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+18,683 shares · 2025Q4Position
- AQR Capital Management exited2025-11-14−35,533 shares · 2025Q3Position
- Izzy Englander (Millennium Mgmt) added2025-11-14+219,720 shares · 2025Q3Position
- Two Sigma Investments opened position2025-11-14+40,427 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+198,100 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to2
- Izzy Englander (Millennium Mgmt)+708,844$1.3M
- Renaissance Technologies+18,683$34K
Trimmed0
—
Exited2
- Ken Griffin (Citadel Advisors)−589,449$1.4M
- Two Sigma Investments−40,427$96K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2024Q1 | 5 | $9.6M |
| 2024Q2 | 3 | $16.7M |
| 2024Q3 | 4 | $3.2M |
| 2024Q4 | 5 | $11.1M |
| 2025Q1 | 4 | $1.9M |
| 2025Q2 | 5 | $3.4M |
| 2025Q3 | 6 | $3.0M |
| 2025Q4 | 4 | $2.5M |
Who owns JSPR
4 super-investors · 2025Q4
Tracked stake
1.37M
shares
Combined value
$3M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added2Sold2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 1.07M | $2M |
| 2 | Renaissance Technologies | 227.2K | $416K |
| 3 | Ken Griffin Citadel Advisors | 48.2K | $88K |
| 4 | Ken Griffin Citadel Advisors | 25.0K | $46K |
Recent moves
20 transactions
- −589,449 · 2025Q4
- −40,427 · 2025Q4
- +708,844 · 2025Q4
- +18,683 · 2025Q4
- −35,533 · 2025Q3
- +40,427 · 2025Q3
- +219,720 · 2025Q3
- +198,100 · 2025Q3
- +35,533 · 2025Q2
- +119,280 · 2025Q2
- +10,400 · 2025Q2
- +25,939 · 2025Q1
- −23,759 · 2024Q4
- −20,000 · 2024Q3
- −22,990 · 2024Q3
- +23,759 · 2024Q3
- +20,000 · 2024Q2
- −88,376 · 2024Q2
- ADDBlackRock+499,558 · 2024Q2
- +111,366 · 2024Q1
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