Ticker · CUSIP 45256X103
Holders (tracked)
8
Combined shares
7,944,682
Combined value
$15.42M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
13 events
- T. Rowe Price added2026-02-17+37,188 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−426,174 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+70,132 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+2,109,983 shares · 2025Q413F
- AQR Capital Management trimmed2026-02-17−57,154 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+215,571 shares · 2025Q413F
- −16,407 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−55,383 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−3,195,410 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+1,805,297 shares · 2025Q313F
- D.E. Shaw & Co. exited2025-11-14−237,147 shares · 2025Q313F
- T. Rowe Price added2025-11-14+6,057 shares · 2025Q313F
- Renaissance Technologies opened position2025-11-13+1,016,199 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 positions0
—
Added to4
- Two Sigma Investments+2,109,983$4.2M
- Renaissance Technologies+215,571$427K
- Izzy Englander (Millennium Mgmt)+70,132$139K
- T. Rowe Price+37,188$74
Trimmed2
- Ken Griffin (Citadel Advisors)−426,174$844K
- AQR Capital Management−57,154$113K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 7 | $36.5M |
| 2022Q2 | 9 | $34.0M |
| 2022Q3 | 7 | $41K |
| 2022Q4 | 5 | $38.3M |
| 2023Q1 | 8 | $14.0M |
| 2023Q2 | 4 | $27.7M |
| 2023Q3 | 6 | $19.1M |
| 2023Q4 | 5 | $56.3M |
| 2024Q1 | 9 | $63.7M |
| 2024Q2 | 8 | $80.4M |
| 2024Q3 | 7 | $9.9M |
| 2024Q4 | 7 | $3.4M |
| 2025Q1 | 8 | $5.6M |
| 2025Q2 | 9 | $16.1M |
| 2025Q3 | 8 | $14.6M |
| 2025Q4 | 8 | $15.4M |
Who owns IBRX
8 super-investors · 2025Q4
Tracked stake
7.94M
shares
Combined value
$15M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added4Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Two Sigma Investments | 4.72M | $9M |
| 2 | Renaissance Technologies | 1.23M | $2M |
| 3 | Ken Griffin Citadel Advisors | 704.6K | $1M |
| 4 | Ken Griffin Citadel Advisors | 626.2K | $1M |
| 5 | Ken Griffin Citadel Advisors | 341.0K | $675K |
| 6 | Izzy Englander Millennium Mgmt | 118.4K | $234K |
| 7 | AQR Capital Management | 46.6K | $92K |
| 8 | T. Rowe Price | 158.2K | $314 |
Recent moves
20 transactions
- −57,154 · 2025Q4
- −426,174 · 2025Q4
- +2,109,983 · 2025Q4
- +37,188 · 2025Q4
- +70,132 · 2025Q4
- +215,571 · 2025Q4
- −16,407 · 2025Q3
- +6,057 · 2025Q3
- −3,195,410 · 2025Q3
- +1,805,297 · 2025Q3
- −55,383 · 2025Q3
- SOLDD.E. Shaw & Co.−237,147 · 2025Q3
- +1,016,199 · 2025Q3
- +2,813,953 · 2025Q2
- +114,714 · 2025Q2
- +778,763 · 2025Q2
- +48,896 · 2025Q2
- +237,147 · 2025Q2
- −7,846 · 2025Q2
- +195,675 · 2025Q1
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