Perimeter Acquisition Corp. I
PMTRW- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002061473
No open-market purchases or sales by Perimeter Acquisition Corp. I insiders were filed in the last 90 days; 38 institutions reported holding it in 13F filings for Q2 2026, worth $9.39M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Perimeter Acquisition Corp. I as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 35
- 0 vs. Q4 2025
- Shares held
- 10.4M
- −47.6K (−0.5%) vs. Q4 2025
- Total value
- $6.94M
- −$642.5K (−8.5%) vs. Q4 2025
- New holders
- 2
- 2 more added
- Sold out
- 2
- 10 more reduced
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PMTRW on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 38 | $9.39M |
| Q1 2026 | 35 | $6.94M |
| Q4 2025 | 35 | $7.59M |
| Q3 2025 | 37 | $6.06M |
| Q2 2025 | 23 | $5.29M |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 0 | $0 |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding Perimeter Acquisition Corp. I; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | 1,161,751 | $801.6K | 0.16% | 00.0% | Unchanged |
| Toronto Dominion Bank | 894,886 | $617.5K | 0.00% | +214,587+31.5% | Added |
| Linden Advisors LP | 850,000 | $552.5K | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 750,000 | $517.5K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 750,000 | $450.0K | 0.00% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 750,000 | $450.0K | 0.00% | 00.0% | Unchanged |
| Moore Capital Management, LP | 600,000 | $414.0K | 0.02% | 00.0% | Unchanged |
| Saba Capital Management, L.P. | 554,845 | $382.8K | 0.01% | 00.0% | Unchanged |
| Walleye Capital LLC | 404,789 | $279.3K | 0.00% | 00.0% | Unchanged |
| Governors Lane LP | 377,528 | $260.5K | 0.03% | −50,000−11.7% | Reduced |
| Lineage Point Capital LP | 372,410 | $257.0K | 0.06% | +27,390+7.9% | Added |
| Lighthouse Investment Partners, LLC | 299,600 | $206.7K | 0.01% | −75,400−20.1% | Reduced |
| Shaolin Capital Management LLC | 292,562 | $201.9K | 0.01% | −38,872−11.7% | Reduced |
| Fort Baker Capital Management LP | 266,149 | $183.6K | 0.02% | −100,000−27.3% | Reduced |
| D. E. Shaw & Co., Inc. | 250,000 | $150.0K | 0.00% | 00.0% | Unchanged |
| HBK Investments L P | 200,000 | $138.0K | 0.00% | 00.0% | Unchanged |
| HGC Investment Management Inc. | 194,200 | $134.0K | 0.03% | 00.0% | Unchanged |
| Periscope Capital Inc. | 165,100 | $113.9K | 0.02% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 162,500 | $97.5K | 0.00% | 00.0% | Unchanged |
| DLD Asset Management, LP | 132,764 | $91.6K | 0.01% | 00.0% | Unchanged |
| CNH Partners LLC | 147,219 | $88.3K | 0.00% | −3,627−2.4% | Reduced |
| K2 Principal Fund, L.P. | 116,818 | $80.6K | 0.01% | 00.0% | Unchanged |
| Context Capital Management, LLC | 100,000 | $69.0K | 0.00% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 100,000 | $60.0K | 0.00% | −45,695−31.4% | Reduced |
| Meteora Capital, LLC | 73,064 | $50.4K | 0.00% | −13,988−16.1% | Reduced |
| Aristeia Capital LLC | 75,000 | $48.8K | 0.00% | 00.0% | Unchanged |
| Westchester Capital Management, LLC | 74,998 | $45.0K | 0.00% | +74,998 | New |
| Schonfeld Strategic Advisors LLC | 54,191 | $37.4K | 0.00% | −112−0.2% | Reduced |
| Radcliffe Capital Management, L.P. | 56,300 | $36.6K | 0.00% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 50,000 | $34.5K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 49,152 | $33.9K | 0.00% | 00.0% | Unchanged |
| Wealthspring Capital LLC | 46,950 | $32.4K | 0.01% | −2,000−4.1% | Reduced |
| Heights Capital Management, Inc | 29,462 | $17.7K | 0.00% | 00.0% | Unchanged |
| Parallax Volatility Advisers, L.P. | 14,300 | $9.74K | 0.00% | −700−4.7% | Reduced |
| Boothbay Fund Management, LLC | 13,732 | – | – | +13,732 | New |
| CSS LLC | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| Clear Street Group Inc. | 0 | $0 | 0.00% | −22,872−100.0% | Sold out |