9 institutions reported holding $7.4M of PERIMETER ACQUISITION CORP I (PMTRU) in SEC 13F filings for 2026-03-31. Largest institutional holders: LMR Partners LLP ($2.7M), MILLENNIUM MANAGEMENT LLC ($1.6M), TORONTO DOMINION BANK ($1.5M), Clear Street Group Inc. ($634,208), JPMORGAN CHASE & CO ($547,000). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | LMR Partners LLP | $2.7M | 250,000 | Hold |
| 2 | MILLENNIUM MANAGEMENT LLC | $1.6M | 148,857 | Hold |
| 3 | TORONTO DOMINION BANK | $1.5M | 141,500 | Trimmed |
| 4 | Clear Street Group Inc. | $634,208 | 59,606 | Added |
| 5 | JPMORGAN CHASE & CO | $547,000 | 50,000 | Trimmed |
| 6 | READYSTATE ASSET MANAGEMENT LP | $284,932 | 26,045 | Hold |
| 7 | Parallax Volatility Advisers, L.P. | $205,238 | 15,478 | Hold |
| 8 | UBS Group AG | $996 | 94 | Trimmed |
| 9 | Westchester Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31