Ticker · CUSIP 45791E206
Holders (tracked)
3
Combined shares
217,662
Combined value
$907.6K
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 6.
SEC event timeline
5 events
- +104,414 shares · 2025Q413F
- Two Sigma Investments opened position2026-02-17+53,002 shares · 2025Q413F
- +60,246 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−14,535 shares · 2025Q413F
- Renaissance Technologies trimmed2025-11-13−900 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 positions3
- Ken Griffin (Citadel Advisors)+104,414$435K
- Izzy Englander (Millennium Mgmt)+60,246$251K
- Two Sigma Investments+53,002$221K
Added to0
—
Trimmed0
—
Exited1
- Renaissance Technologies−14,535$43K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2023Q4 | 1 | $39K |
| 2024Q1 | 2 | $91K |
| 2024Q2 | 1 | $37K |
| 2025Q2 | 1 | $53K |
| 2025Q3 | 1 | $43K |
| 2025Q4 | 3 | $908K |
Who owns ISPO
3 super-investors · 2025Q4
Tracked stake
217.7K
shares
Combined value
$908K
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 104.4K | $435K |
| 2 | Izzy Englander Millennium Mgmt | 60.2K | $251K |
| 3 | Two Sigma Investments | 53.0K | $221K |
Recent moves
7 transactions
- +60,246 · 2025Q4
- +53,002 · 2025Q4
- +104,414 · 2025Q4
- −14,535 · 2025Q4
- −900 · 2025Q3
- +15,435 · 2025Q2
- NEWBlackRock+10,541 · 2023Q4
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