9 institutions reported holding $4.0M of OYSTER ENTERPRISES II ACQUIS (OYSEU) in SEC 13F filings for 2026-06-30. Largest institutional holders: MILLENNIUM MANAGEMENT LLC ($1.1M), JPMORGAN CHASE & CO ($1.0M), OMERS ADMINISTRATION Corp ($670,940), Clear Street Group Inc. ($555,819), READYSTATE ASSET MANAGEMENT LP ($509,541). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | MILLENNIUM MANAGEMENT LLC | $1.1M | 100,986 | Hold |
| 2 | JPMORGAN CHASE & CO | $1.0M | 100,000 | Hold |
| 3 | OMERS ADMINISTRATION Corp | $670,940 | 61,050 | Hold |
| 4 | Clear Street Group Inc. | $555,819 | 50,575 | Trimmed |
| 5 | READYSTATE ASSET MANAGEMENT LP | $509,541 | 49,470 | Hold |
| 6 | CITADEL ADVISORS LLC | $136,568 | 13,259 | Trimmed |
| 7 | UBS Group AG | $23,150 | 2,241 | Hold |
| 8 | GLAZER CAPITAL, LLC | $0 | 15 | New |
| 9 | Calamos Advisors LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30