Ticker · CUSIP 450047303
Holders (tracked)
2
Combined shares
82,205
Combined value
$1.36M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
3 events
- +64,152 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−368,387 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2025-11-14+32,180 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
- Ken Griffin (Citadel Advisors)+64,152$1.1M
Added to0
—
Trimmed1
- Izzy Englander (Millennium Mgmt)−368,387$6.1M
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2023Q4 | 5 | $2.1M |
| 2024Q1 | 4 | $439K |
| 2024Q2 | 2 | $460K |
| 2024Q3 | 4 | $1.6M |
| 2024Q4 | 4 | $846K |
| 2025Q1 | 2 | $4.6M |
| 2025Q2 | 1 | $4.9M |
| 2025Q3 | 1 | $4.6M |
| 2025Q4 | 2 | $1.4M |
Who owns IRS
2 super-investors · 2025Q4
Tracked stake
82.2K
shares
Combined value
$1M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 64.2K | $1M |
| 2 | Izzy Englander Millennium Mgmt | 18.1K | $299K |
Recent moves
15 transactions
- +64,152 · 2025Q4
- −368,387 · 2025Q4
- +32,180 · 2025Q3
- +27,951 · 2025Q2
- −31,000 · 2025Q2
- +29,500 · 2025Q1
- +326,309 · 2025Q1
- −107,055 · 2024Q4
- +1,500 · 2024Q4
- +107,055 · 2024Q3
- −50,426 · 2024Q2
- −189,459 · 2024Q1
- +3,678 · 2024Q1
- +189,459 · 2023Q4
- +46,748 · 2023Q4
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