Perimeter Acquisition Corp. I PMTR Institutional Ownership

Updated Oct 10, 2026

Perimeter Acquisition Corp. I (NASDAQ:PMTR) was reported as a holding by 56 institutional investors in 13F filings for the quarter ended June 30, 2026.

• These investors held 89.24% of outstanding shares in Q2 2026, up from 71.12% the quarter before.
• Total shares held in Perimeter Acquisition Corp. I rose 0.90% versus Q1 2026, while the number of holders rose 143.48% versus Q2 2025.
• Looking at the 56 holders of PMTR individually, 14 added to their positions, 12 reduced their stakes and 30 left their positions unchanged.
• Altogether, institutional holders owned 22.12Mn PMTR shares at the end of Q2 2026, up 198.31K from the prior quarter and up 5.58Mn from a year earlier.
• Harraden Circle Investments, LLC led 13F holders of PMTR with 2.44Mn shares as of June 30, 2026, or 9.84% of shares outstanding.
• The largest position increases in PMTR for Q2 2026 were by Meteora Capital, LLC (+207.22K shares), Radcliffe Capital Management, L.P. (+182.99K shares), Centiva Capital, LP (+71.44K shares), StoneX Group Inc. (+30.27K shares) and Schonfeld Strategic Advisors LLC (+20.39K shares).
• Holders that trimmed the most shares of Perimeter Acquisition Corp. I in Q2 2026 while keeping a position were Toronto Dominion Bank (-309.36K shares), Saba Capital Management, L.P. (-154.94K shares), JPMorgan Chase & Co (-53.43K shares), Lineage Point Capital LP (-33.36K shares) and CSS LLC (-28.44K shares).
• Business Quant data shows the 10 biggest positions in Perimeter Acquisition Corp. I as of Q2 2026 were held by Harraden Circle Investments, LLC (2.44Mn shares), Fort Baker Capital Management LP (1.57Mn shares), Linden Advisors LP (1.5Mn shares), Magnetar Financial LLC (1.5Mn shares), Alberta Investment Management Corp (1.5Mn shares), Moore Capital Management, LP (1.2Mn shares), Governors Lane LP (1.12Mn shares), Meteora Capital, LLC (905.42K shares), Lineage Point Capital LP (700K shares) and Saba Capital Management, L.P. (649.94K shares).