57 institutions reported holding $230.4M of PERIMETER ACQUISITION CORP I (PMTR) in SEC 13F filings for 2026-06-30. Largest institutional holders: Harraden Circle Investments, LLC ($25.4M), Fort Baker Capital Management LP ($16.4M), Linden Advisors LP ($15.6M), Magnetar Financial LLC ($15.6M), Alberta Investment Management Corp ($15.6M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30