Ticker · CUSIP 46501C100
Holders (tracked)
4
Combined shares
71,363
Combined value
$199.8K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
4 events
- Ken Griffin (Citadel Advisors) added2026-02-17+5,938 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−7,354 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+10,100 shares · 2025Q413F
- AQR Capital Management added2025-11-14+17,994 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions1
- Renaissance Technologies+10,100$28K
Added to1
- Ken Griffin (Citadel Advisors)+5,938$17K
Trimmed1
- AQR Capital Management−7,354$21K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2023Q2 | 3 | $752K |
| 2023Q3 | 1 | $577K |
| 2023Q4 | 3 | $10.1M |
| 2024Q1 | 3 | $5.6M |
| 2024Q2 | 3 | $7.9M |
| 2024Q3 | 2 | $140K |
| 2024Q4 | 2 | $226K |
| 2025Q1 | 2 | $100K |
| 2025Q2 | 2 | $117K |
| 2025Q3 | 3 | $158K |
| 2025Q4 | 4 | $200K |
Who owns ISPR
4 super-investors · 2025Q4
Tracked stake
71.4K
shares
Combined value
$200K
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added2Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | AQR Capital Management | 25.0K | $70K |
| 2 | Ken Griffin Citadel Advisors | 22.1K | $62K |
| 3 | Ken Griffin Citadel Advisors | 14.2K | $40K |
| 4 | Renaissance Technologies | 10.1K | $28K |
Recent moves
12 transactions
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