Ticker · CUSIP 68373M107
Holders (tracked)
6
Combined shares
1,090,242
Combined value
$15.44M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
SEC event timeline
11 events
- Ken Griffin (Citadel Advisors) trimmed2026-02-17−52,798 shares · 2025Q413F
- D.E. Shaw & Co. exited2026-02-17−12,716 shares · 2025Q413F
- Two Sigma Investments exited2026-02-17−48,675 shares · 2025Q413F
- +196,434 shares · 2025Q413F
- +12,100 shares · 2025Q413F
- Renaissance Technologies added2026-02-12+121,301 shares · 2025Q413F
- D.E. Shaw & Co. opened position2025-11-14+12,716 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) exited2025-11-14−419,035 shares · 2025Q313F
- Steve Cohen (Point72) exited2025-11-14−80,200 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−88,557 shares · 2025Q313F
- Renaissance Technologies added2025-11-13+23,700 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 positions2
- Izzy Englander (Millennium Mgmt)+196,434$2.8M
- Paul Tudor Jones (Tudor Investment)+12,100$171K
Added to1
- Renaissance Technologies+121,301$1.7M
Trimmed1
- Ken Griffin (Citadel Advisors)−52,798$748K
Exited2
- Two Sigma Investments−48,675$1.0M
- D.E. Shaw & Co.−12,716$262K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 6 | $3.0M |
| 2022Q2 | 4 | $1.5M |
| 2022Q3 | 6 | $2K |
| 2022Q4 | 6 | $453K |
| 2023Q1 | 7 | $2.8M |
| 2023Q2 | 6 | $16.7M |
| 2023Q3 | 9 | $14.2M |
| 2023Q4 | 6 | $24.8M |
| 2024Q1 | 6 | $34.9M |
| 2024Q2 | 7 | $25.0M |
| 2024Q3 | 7 | $29.6M |
| 2024Q4 | 6 | $26.1M |
| 2025Q1 | 8 | $18.0M |
| 2025Q2 | 7 | $28.2M |
| 2025Q3 | 6 | $15.2M |
| 2025Q4 | 6 | $15.4M |
Who owns OPRA
6 super-investors · 2025Q4
Tracked stake
1.09M
shares
Combined value
$15M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added1Trim3
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 282.6K | $4M |
| 2 | Ken Griffin Citadel Advisors | 244.3K | $3M |
| 3 | Renaissance Technologies | 231.8K | $3M |
| 4 | Izzy Englander Millennium Mgmt | 196.4K | $3M |
| 5 | Ken Griffin Citadel Advisors | 123.0K | $2M |
| 6 | Paul Tudor Jones Tudor Investment | 12.1K | $171K |
Recent moves
20 transactions
- −48,675 · 2025Q4
- −52,798 · 2025Q4
- +12,100 · 2025Q4
- +196,434 · 2025Q4
- SOLDD.E. Shaw & Co.−12,716 · 2025Q4
- +121,301 · 2025Q4
- +12,716 · 2025Q3
- −80,200 · 2025Q3
- −419,035 · 2025Q3
- −88,557 · 2025Q3
- +23,700 · 2025Q3
- +15,395 · 2025Q2
- −23,620 · 2025Q2
- +217,200 · 2025Q2
- +42,300 · 2025Q2
- −94,195 · 2025Q1
- −182,932 · 2025Q1
- +122,635 · 2025Q1
- +44,500 · 2025Q1
- +101,500 · 2024Q4
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