Who owns Perimeter Acquisition Corp. I?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of PMTR from SEC Form 13F filings across 56 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 56 institutions disclosed 22.1M shares of Perimeter Acquisition Corp. I worth $230.4M — about 89.2% of shares outstanding; the largest disclosed holder is Harraden Circle Investments, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
56
13F holders
$230.4M
value, 2026 filers
89.2%
of shares outstanding (22.1M sh)
5
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of PMTR's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Harraden Circle Investments, LLC | 2.4M | $25.4M | 3.2% | 9.8% | 0.0% |
| 2 | Fort Baker Capital Management LP | 1.6M | $16.4M | 1.2% | 6.3% | 0.0% |
| 3 | Linden Advisors LP | 1.5M | $15.6M | 0.1% | 6.1% | 0.0% |
| 4 | Magnetar Financial LLC | 1.5M | $15.6M | 0.1% | 6.1% | 0.0% |
| 5 | Alberta Investment Management Corp | 1.5M | $15.6M | 0.1% | 6.1% | 0.0% |
| 6 | MOORE CAPITAL MANAGEMENT, LP | 1.2M | $12.5M | 0.2% | 4.8% | 0.0% |
| 7 | Governors Lane LP | 1.1M | $11.6M | 1.0% | 4.5% | 0.0% |
| 8 | Meteora Capital, LLC | 905,419 | $9.4M | 0.8% | 3.7% | +29.7% |
| 9 | Lineage Point Capital LP | 700,000 | $7.3M | 1.5% | 2.8% | -4.5% |
| 10 | Saba Capital Management, L.P. | 649,940 | $6.8M | 0.2% | 2.6% | -19.2% |
| 11 | TORONTO DOMINION BANK | 600,100 | $6.3M | 0.0% | 2.4% | -34.0% |
| 12 | TWO SIGMA INVESTMENTS, LP | 537,309 | $5.6M | 0.0% | 2.2% | 0.0% |
| 13 | Radcliffe Capital Management, L.P. | 521,525 | $5.4M | 0.4% | 2.1% | +54.1% |
| 14 | Sculptor Capital LP | 500,000 | $5.2M | 0.0% | 2% | 0.0% |
| 15 | Ghisallo Capital Management LLC | 500,000 | $5.2M | 0.1% | 2% | 0.0% |
| 16 | D. E. Shaw & Co., Inc. | 500,000 | $5.2M | 0.0% | 2% | 0.0% |
| 17 | Centiva Capital, LP | 409,442 | $4.3M | 0.0% | 1.7% | +21.1% |
| 18 | GLAZER CAPITAL, LLC | 379,931 | $4.0M | 0.1% | 1.5% | 0.0% |
| 19 | HBK INVESTMENTS L P | 360,000 | $3.8M | 0.0% | 1.5% | 0.0% |
| 20 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 350,000 | $3.6M | 0.0% | 1.4% | 0.0% |
| 21 | Periscope Capital Inc. | 327,836 | $3.4M | 0.3% | 1.3% | +1.5% |
| 22 | PICTON MAHONEY ASSET MANAGEMENT | 325,000 | $3.4M | 0.0% | 1.3% | 0.0% |
| 23 | MILLENNIUM MANAGEMENT LLC | 314,650 | $3.3M | 0.0% | 1.3% | 0.0% |
| 24 | K2 PRINCIPAL FUND, L.P. | 297,237 | $3.1M | 0.2% | 1.2% | 0.0% |
| 25 | AQR Arbitrage LLC | 285,795 | $3.0M | 0.0% | 1.2% | +0.9% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.