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, Q4 2025
Institutional positions in Perimeter Acquisition Corp. I as of Dec 31, 2025. 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
- −2 vs. Q3 2025
- Shares held
- 10.5M
- +413.0K (+4.1%) vs. Q3 2025
- Total value
- $7.59M
- +$1.52M (+25.1%) vs. Q3 2025
- New holders
- 3
- 4 more added
- Sold out
- 5
- 7 more reduced
Compare with Q3 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, Q4 2025
Shares, value and share of portfolio for each institution holding Perimeter Acquisition Corp. I; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | 1,161,751 | $822.2K | 0.15% | +5,668+0.5% | Added |
| Linden Advisors LP | 850,000 | $654.5K | 0.00% | 00.0% | Unchanged |
| Magnetar Financial LLC | 750,000 | $577.5K | 0.01% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 750,000 | $530.8K | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 750,000 | $530.8K | 0.00% | 00.0% | Unchanged |
| Toronto Dominion Bank | 680,299 | $481.7K | 0.00% | +175,547+34.8% | Added |
| Saba Capital Management, L.P. | 554,845 | $427.2K | 0.01% | 00.0% | Unchanged |
| Moore Capital Management, LP | 600,000 | $424.6K | 0.01% | 00.0% | Unchanged |
| Governors Lane LP | 427,528 | $329.2K | 0.03% | −25,000−5.5% | Reduced |
| Walleye Capital LLC | 404,789 | $286.5K | 0.00% | −5,339−1.3% | Reduced |
| Lighthouse Investment Partners, LLC | 375,000 | $265.4K | 0.01% | 00.0% | Unchanged |
| Fort Baker Capital Management LP | 366,149 | $259.1K | 0.03% | −33,850−8.5% | Reduced |
| Lineage Point Capital LP | 345,020 | $244.2K | 0.09% | +345,020 | New |
| Shaolin Capital Management LLC | 331,434 | $234.6K | 0.01% | +14,217+4.5% | Added |
| D. E. Shaw & Co., Inc. | 250,000 | $176.9K | 0.00% | 00.0% | Unchanged |
| HBK Investments L P | 200,000 | $141.5K | 0.00% | 00.0% | Unchanged |
| HGC Investment Management Inc. | 194,200 | $137.4K | 0.03% | +194,200 | New |
| Periscope Capital Inc. | 165,100 | $118.9K | 0.02% | 00.0% | Unchanged |
| Picton Mahoney Asset Management | 162,500 | $115.0K | 0.00% | 00.0% | Unchanged |
| CNH Partners LLC | 150,846 | $106.8K | 0.00% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 145,695 | $103.1K | 0.00% | +113,383+350.9% | Added |
| DLD Asset Management, LP | 132,764 | $94.0K | 0.01% | +132,764 | New |
| K2 Principal Fund, L.P. | 116,818 | $82.9K | 0.01% | −6,800−5.5% | Reduced |
| Context Capital Management, LLC | 100,000 | $70.8K | 0.00% | 00.0% | Unchanged |
| Meteora Capital, LLC | 87,052 | $61.6K | 0.01% | −79,217−47.6% | Reduced |
| Aristeia Capital LLC | 75,000 | $57.8K | 0.00% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 56,300 | $43.4K | 0.00% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 54,303 | $38.4K | 0.00% | −15,297−22.0% | Reduced |
| Tenor Capital Management Co., L.P. | 50,000 | $35.4K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 49,152 | $34.8K | 0.00% | 00.0% | Unchanged |
| Wealthspring Capital LLC | 48,950 | $34.6K | 0.01% | 00.0% | Unchanged |
| Heights Capital Management, Inc | 29,462 | $20.9K | 0.01% | 00.0% | Unchanged |
| CSS LLC | 25,000 | $17.7K | 0.00% | 00.0% | Unchanged |
| Clear Street Group Inc. | 22,872 | $16.2K | 0.00% | −800−3.4% | Reduced |
| Parallax Volatility Advisers, L.P. | 15,000 | $10.6K | 0.00% | 00.0% | Unchanged |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −201,445−100.0% | Sold out |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 0 | $0 | 0.00% | −138,871−100.0% | Sold out |
| Glazer Capital, LLC | 0 | $0 | 0.00% | −61,172−100.0% | Sold out |
| Highbridge Capital Management LLC | 0 | $0 | 0.00% | – | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −7−100.0% | Sold out |