Ticker · CUSIP 452521107
Holders (tracked)
6
Combined shares
1,010,609
Combined value
$6.63M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-3 vs previous quarter over the last 8.
SEC event timeline
14 events
- D.E. Shaw & Co. added2026-02-17+85,382 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) added2026-02-17+21,921 shares · 2025Q413F
- Two Sigma Investments exited2026-02-17−117,739 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−91,509 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−69,482 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−103,513 shares · 2025Q413F
- −113,783 shares · 2025Q313F
- AQR Capital Management added2025-11-14+11,725 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+294,393 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+45,881 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+204,972 shares · 2025Q313F
- T. Rowe Price added2025-11-14+665 shares · 2025Q313F
- Renaissance Technologies opened position2025-11-13+103,513 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-12−81,300 shares · 2024Q313F
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 positions0
—
Added to2
- D.E. Shaw & Co.+85,382$581K
- Ken Griffin (Citadel Advisors)+21,921$149K
Trimmed2
- Izzy Englander (Millennium Mgmt)−91,509$622K
- AQR Capital Management−69,482$472K
Exited2
- Two Sigma Investments−117,739$864K
- Renaissance Technologies−103,513$760K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 9 | $11.8M |
| 2022Q2 | 8 | $8.7M |
| 2022Q3 | 7 | $8K |
| 2022Q4 | 9 | $10.3M |
| 2023Q1 | 11 | $14.8M |
| 2023Q2 | 8 | $17.0M |
| 2023Q3 | 9 | $18.0M |
| 2023Q4 | 8 | $23.2M |
| 2024Q1 | 9 | $27.7M |
| 2024Q2 | 10 | $40.7M |
| 2024Q3 | 8 | $21.6M |
| 2024Q4 | 8 | $15.2M |
| 2025Q1 | 9 | $9.4M |
| 2025Q2 | 9 | $7.2M |
| 2025Q3 | 9 | $9.8M |
| 2025Q4 | 6 | $6.6M |
Who owns IMMR
6 super-investors · 2025Q4
Tracked stake
1.01M
shares
Combined value
$7M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added3Trim2Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 445.2K | $3M |
| 2 | D.E. Shaw & Co. | 404.8K | $3M |
| 3 | AQR Capital Management | 54.5K | $371K |
| 4 | Ken Griffin Citadel Advisors | 38.6K | $262K |
| 5 | Ken Griffin Citadel Advisors | 32.0K | $218K |
| 6 | T. Rowe Price | 35.4K | $241 |
Recent moves
20 transactions
- −69,482 · 2025Q4
- −91,509 · 2025Q4
- +85,382 · 2025Q4
- +21,921 · 2025Q4
- −117,739 · 2025Q4
- −103,513 · 2025Q4
- −113,783 · 2025Q3
- +204,972 · 2025Q3
- +45,881 · 2025Q3
- +294,393 · 2025Q3
- +11,725 · 2025Q3
- +665 · 2025Q3
- +103,513 · 2025Q3
- −81,300 · 2024Q3
- +93,388 · 2025Q2
- −35,118 · 2025Q2
- −199,514 · 2025Q2
- +37,792 · 2025Q2
- +26,092 · 2025Q2
- −352,913 · 2025Q1
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