Ticker · CUSIP 45768S105
Holders (tracked)
9
Combined shares
1,727,256
Combined value
$130.03M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
SEC event timeline
19 events
- D.E. Shaw & Co. added2026-02-17+36,022 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+11,309 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−10,695 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+51,824 shares · 2025Q413F
- Steve Cohen (Point72) added2026-02-17+83,982 shares · 2025Q413F
- T. Rowe Price added2026-02-17+5,021 shares · 2025Q413F
- AQR Capital Management added2026-02-17+86,942 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−26,200 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+139,200 shares · 2025Q413F
- −22,773 shares · 2025Q313F
- AQR Capital Management added2025-11-14+109,185 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) added2025-11-14+131,483 shares · 2025Q313F
- Steve Cohen (Point72) added2025-11-14+745 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+9,966 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+102,167 shares · 2025Q313F
- T. Rowe Price added2025-11-14+981 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−100 shares · 2025Q313F
- Norges Bank (Norway SWF) exited2025-11-13−133,545 shares · 2025Q313F
- Norges Bank (Norway SWF) trimmed2025-11-12−57,766 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 positions1
- Norges Bank (Norway SWF)+139,200$10.7M
Added to6
- AQR Capital Management+86,942$6.7M
- Steve Cohen (Point72)+83,982$6.4M
- Izzy Englander (Millennium Mgmt)+51,824$4.0M
- D.E. Shaw & Co.+36,022$2.8M
- Two Sigma Investments+11,309$866K
- T. Rowe Price+5,021$384
Trimmed2
- Renaissance Technologies−26,200$2.0M
- Ken Griffin (Citadel Advisors)−10,695$819K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 9 | $20.55B |
| 2022Q2 | 13 | $21.26B |
| 2022Q3 | 11 | $17.2M |
| 2022Q4 | 13 | $441.9M |
| 2023Q1 | 13 | $432.6M |
| 2023Q2 | 10 | $424.7M |
| 2023Q3 | 11 | $421.0M |
| 2023Q4 | 9 | $526.2M |
| 2024Q1 | 9 | $540.7M |
| 2024Q2 | 10 | $523.0M |
| 2024Q3 | 12 | $27.1M |
| 2024Q4 | 10 | $22.5M |
| 2025Q1 | 11 | $56.3M |
| 2025Q2 | 10 | $95.9M |
| 2025Q3 | 8 | $102.4M |
| 2025Q4 | 9 | $130.0M |
Who owns IOSP
9 super-investors · 2025Q4
Tracked stake
1.73M
shares
Combined value
$130M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added6Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 533.3K | $41M |
| 2 | D.E. Shaw & Co. | 309.9K | $24M |
| 3 | AQR Capital Management | 268.2K | $21M |
| 4 | Two Sigma Investments | 159.5K | $12M |
| 5 | Norges Bank Norway SWF | 139.2K | $11M |
| 6 | Renaissance Technologies | 120.3K | $9M |
| 7 | Steve Cohen Point72 | 95.8K | $7M |
| 8 | Ken Griffin Citadel Advisors | 72.7K | $6M |
| 9 | T. Rowe Price | 28.4K | $2K |
Recent moves
20 transactions
- +5,021 · 2025Q4
- +11,309 · 2025Q4
- +36,022 · 2025Q4
- +51,824 · 2025Q4
- +83,982 · 2025Q4
- −10,695 · 2025Q4
- +86,942 · 2025Q4
- −26,200 · 2025Q4
- +139,200 · 2025Q4
- −22,773 · 2025Q3
- +981 · 2025Q3
- +745 · 2025Q3
- +109,185 · 2025Q3
- +131,483 · 2025Q3
- +102,167 · 2025Q3
- +9,966 · 2025Q3
- −100 · 2025Q3
- −133,545 · 2025Q3
- −57,766 · 2024Q3
- −4,552 · 2025Q2
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