Ticker · CUSIP 68218J103
Holders (tracked)
8
Combined shares
2,110,828
Combined value
$3.58M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
12 events
- D.E. Shaw & Co. added2026-02-17+196,871 shares · 2025Q413F
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−551,665 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) added2026-02-17+387,594 shares · 2025Q413F
- Two Sigma Investments added2026-02-17+131,369 shares · 2025Q413F
- AQR Capital Management added2026-02-17+1,066 shares · 2025Q413F
- Renaissance Technologies trimmed2026-02-12−280,754 shares · 2025Q413F
- AQR Capital Management added2025-11-14+296 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−364,515 shares · 2025Q313F
- Two Sigma Investments added2025-11-14+60,047 shares · 2025Q313F
- D.E. Shaw & Co. opened position2025-11-14+186,281 shares · 2025Q313F
- T. Rowe Price added2025-11-14+5,574 shares · 2025Q313F
- Renaissance Technologies trimmed2025-11-13−184,096 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
- Izzy Englander (Millennium Mgmt)+387,594$588K
- D.E. Shaw & Co.+196,871$364K
- Two Sigma Investments+131,369$243K
- AQR Capital Management+1,066$2K
Trimmed2
- Ken Griffin (Citadel Advisors)−551,665$1.0M
- Renaissance Technologies−280,754$519K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q4 | 9 | $27.2M |
| 2023Q1 | 8 | $24.8M |
| 2023Q2 | 10 | $56.6M |
| 2023Q3 | 9 | $56.2M |
| 2023Q4 | 8 | $58.8M |
| 2024Q1 | 8 | $55.4M |
| 2024Q2 | 8 | $31.4M |
| 2024Q3 | 7 | $1.8M |
| 2024Q4 | 6 | $1.9M |
| 2025Q1 | 7 | $587K |
| 2025Q2 | 6 | $6.3M |
| 2025Q3 | 8 | $3.3M |
| 2025Q4 | 8 | $3.6M |
Who owns OABI
8 super-investors · 2025Q4
Tracked stake
2.11M
shares
Combined value
$4M
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added4Trim3Held1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Izzy Englander Millennium Mgmt | 673.4K | $1M |
| 2 | Two Sigma Investments | 423.1K | $783K |
| 3 | D.E. Shaw & Co. | 383.2K | $709K |
| 4 | Ken Griffin Citadel Advisors | 285.1K | $527K |
| 5 | Renaissance Technologies | 242.7K | $449K |
| 6 | Ken Griffin Citadel Advisors | 26.0K | $48K |
| 7 | AQR Capital Management | 24.2K | $45K |
| 8 | T. Rowe Price | 53.2K | $100 |
Recent moves
20 transactions
- −551,665 · 2025Q4
- +1,066 · 2025Q4
- +131,369 · 2025Q4
- +387,594 · 2025Q4
- +196,871 · 2025Q4
- −280,754 · 2025Q4
- +5,574 · 2025Q3
- +60,047 · 2025Q3
- +296 · 2025Q3
- +186,281 · 2025Q3
- −364,515 · 2025Q3
- −184,096 · 2025Q3
- +12,520 · 2025Q2
- +518,645 · 2025Q2
- +231,688 · 2025Q2
- +8,299 · 2025Q2
- +680,950 · 2025Q2
- −55,074 · 2025Q1
- −10,292 · 2025Q1
- +10,271 · 2025Q1
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