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, Q3 2025
Institutional positions in Perimeter Acquisition Corp. I as of Sep 30, 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
- 37
- +15 vs. Q2 2025
- Shares held
- 10.1M
- +1.94M (+23.9%) vs. Q2 2025
- Total value
- $6.06M
- +$790.3K (+15.0%) vs. Q2 2025
- New holders
- 16
- 5 more added
- Sold out
- 1
- 3 more reduced
1 institution that held it in Q2 2025 haven't filed for Q3 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Perimeter Acquisition Corp. I; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| UBS Group AG | 7 | $4 | 0.00% | +7 | New |
| Highbridge Capital Management LLC | – | $320 | 0.00% | – | – |
| Parallax Volatility Advisers, L.P. | 15,000 | $9.00K | 0.00% | −10,000−40.0% | Reduced |
| Clear Street Group Inc. | 23,672 | $14.2K | 0.00% | +23,672 | New |
| CSS LLC | 25,000 | $15.0K | 0.00% | +25,000 | New |
| Heights Capital Management, Inc | 29,462 | $17.7K | 0.01% | +29,462 | New |
| Hudson Bay Capital Management LP | 32,312 | $19.4K | 0.00% | +32,312 | New |
| Wealthspring Capital LLC | 48,950 | $29.4K | 0.01% | +48,950 | New |
| BNP Paribas Arbitrage, SA | 49,152 | $29.5K | 0.00% | +49,152 | New |
| Tenor Capital Management Co., L.P. | 50,000 | $30.0K | 0.00% | +50,000 | New |
| Radcliffe Capital Management, L.P. | 56,300 | $33.8K | 0.00% | +56,300 | New |
| Glazer Capital, LLC | 61,172 | $37.0K | 0.00% | −137,428−69.2% | Reduced |
| Schonfeld Strategic Advisors LLC | 69,600 | $41.8K | 0.00% | +69,600 | New |
| Aristeia Capital LLC | 75,000 | $45.0K | 0.00% | 00.0% | Unchanged |
| Context Capital Management, LLC | 100,000 | $60.0K | 0.00% | 00.0% | Unchanged |
| K2 Principal Fund, L.P. | 123,618 | $74.2K | 0.01% | 00.0% | Unchanged |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 138,871 | $83.3K | 0.00% | +138,871 | New |
| CNH Partners LLC | 150,846 | $90.5K | 0.00% | +150,846 | New |
| Picton Mahoney Asset Management | 162,500 | $97.0K | 0.00% | +162,500 | New |
| Periscope Capital Inc. | 165,100 | $99.1K | 0.02% | +62,900+61.5% | Added |
| Meteora Capital, LLC | 166,269 | $99.8K | 0.01% | −91,879−35.6% | Reduced |
| HBK Investments L P | 200,000 | $120.0K | 0.00% | +200,000 | New |
| Weiss Asset Management LP | 201,445 | $120.9K | 0.00% | +201,445 | New |
| D. E. Shaw & Co., Inc. | 250,000 | $160.2K | 0.00% | 00.0% | Unchanged |
| Shaolin Capital Management LLC | 317,217 | $190.3K | 0.01% | +4,716+1.5% | Added |
| Lighthouse Investment Partners, LLC | 375,000 | $225.0K | 0.01% | 00.0% | Unchanged |
| Fort Baker Capital Management LP | 399,999 | $240.0K | 0.04% | 00.0% | Unchanged |
| Walleye Capital LLC | 410,128 | $246.1K | 0.00% | +124,074+43.4% | Added |
| Governors Lane LP | 452,528 | $271.5K | 0.04% | 00.0% | Unchanged |
| Toronto Dominion Bank | 504,752 | $302.9K | 0.00% | +236,091+87.9% | Added |
| Saba Capital Management, L.P. | 554,845 | $332.9K | 0.01% | 00.0% | Unchanged |
| Moore Capital Management, LP | 600,000 | $360.0K | 0.01% | +600,000 | New |
| Magnetar Financial LLC | 750,000 | $446.3K | 0.00% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 750,000 | $450.0K | 0.00% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 750,000 | $472.5K | 0.00% | 00.0% | Unchanged |
| Linden Advisors LP | 850,000 | $505.8K | 0.00% | 00.0% | Unchanged |
| Harraden Circle Investments, LLC | 1,156,083 | $693.6K | 0.14% | +163,243+16.4% | Added |
| Sculptor Capital LP | 0 | $0 | 0.00% | −250,000−100.0% | Sold out |
| Clear Street LLC | – | – | – | – | Not filed |