Perimeter Acquisition Corp. I
PMTR- 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; 56 institutions reported holding it in 13F filings for Q2 2026, worth $230.4M 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
- 53
- +10 vs. Q3 2025
- Shares held
- 21.5M
- −272.5K (−1.3%) vs. Q3 2025
- Total value
- $221.0M
- −$1.04M (−0.5%) vs. Q3 2025
- New holders
- 12
- 9 more added
- Sold out
- 2
- 14 more reduced
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting PMTR 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 | 56 | $230.4M |
| Q1 2026 | 52 | $224.8M |
| Q4 2025 | 53 | $221.0M |
| Q3 2025 | 43 | $222.0M |
| Q2 2025 | 25 | $170.9M |
| 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 | 2,300,498 | $23.6M | 4.33% | +400,500+21.1% | Added |
| Linden Advisors LP | 1,500,000 | $15.4M | 0.09% | 00.0% | Unchanged |
| Magnetar Financial LLC | 1,500,000 | $15.4M | 0.15% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 1,500,000 | $15.4M | 0.09% | 00.0% | Unchanged |
| Moore Capital Management, LP | 1,200,000 | $12.3M | 0.25% | 00.0% | Unchanged |
| Governors Lane LP | 1,116,900 | $11.5M | 1.06% | −50,100−4.3% | Reduced |
| Saba Capital Management, L.P. | 1,055,870 | $10.9M | 0.36% | 00.0% | Unchanged |
| Toronto Dominion Bank | 995,000 | $10.2M | 0.02% | −211,314−17.5% | Reduced |
| Fort Baker Capital Management LP | 800,000 | $8.22M | 0.91% | 00.0% | Unchanged |
| Meteora Capital, LLC | 721,718 | $7.42M | 0.62% | −480,901−40.0% | Reduced |
| Two Sigma Investments, LP | 537,309 | $5.52M | 0.01% | 00.0% | Unchanged |
| Lineage Point Capital LP | 530,957 | $5.46M | 2.07% | +530,957 | New |
| Sculptor Capital LP | 500,000 | $5.14M | 0.06% | −160,249−24.3% | Reduced |
| D. E. Shaw & Co., Inc. | 500,000 | $5.14M | 0.00% | 00.0% | Unchanged |
| Ghisallo Capital Management LLC | 500,000 | $5.14M | 0.23% | 00.0% | Unchanged |
| Healthcare of Ontario Pension Plan Trust Fund | 450,000 | $4.63M | 0.01% | −800,000−64.0% | Reduced |
| HBK Investments L P | 360,000 | $3.70M | 0.04% | −40,000−10.0% | Reduced |
| Glazer Capital, LLC | 351,615 | $3.62M | 0.10% | −23,572−6.3% | Reduced |
| Centiva Capital, LP | 338,000 | $3.47M | 0.21% | +88,000+35.2% | Added |
| Picton Mahoney Asset Management | 325,000 | $3.34M | 0.04% | 00.0% | Unchanged |
| Periscope Capital Inc. | 322,903 | $3.32M | 0.64% | −42,097−11.5% | Reduced |
| CNH Partners LLC | 301,692 | $3.10M | 0.07% | 00.0% | Unchanged |
| Millennium Management LLC | 297,721 | $3.06M | 0.00% | −279−0.1% | Reduced |
| K2 Principal Fund, L.P. | 297,237 | $3.06M | 0.32% | +50,000+20.2% | Added |
| Radcliffe Capital Management, L.P. | 276,973 | $2.85M | 0.16% | +73,916+36.4% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 272,907 | $2.81M | 0.01% | −27,093−9.0% | Reduced |
| Context Capital Management, LLC | 250,000 | $2.57M | 0.07% | +50,000+25.0% | Added |
| HGC Investment Management Inc. | 238,400 | $2.45M | 0.52% | +238,400 | New |
| Shaolin Capital Management LLC | 230,256 | $2.37M | 0.09% | −112,573−32.8% | Reduced |
| DLD Asset Management, LP | 199,351 | $2.05M | 0.21% | +201+0.1% | Added |
| Citigroup Inc | 181,946 | $1.87M | 0.00% | −18,054−9.0% | Reduced |
| Aristeia Capital LLC | 150,000 | $1.54M | 0.04% | 00.0% | Unchanged |
| Berkley W R Corp | 148,830 | $1.53M | 0.09% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 142,507 | $1.46M | 0.01% | +15,682+12.4% | Added |
| Fifth Lane Capital, LP | 125,000 | $1.28M | 1.51% | +125,000 | New |
| JPMorgan Chase & Co | 116,548 | $1.20M | 0.00% | +49,868+74.8% | Added |
| Tenor Capital Management Co., L.P. | 100,000 | $1.03M | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 98,304 | $1.01M | 0.00% | 00.0% | Unchanged |
| Mizuho Securities USA LLC | 99,465 | $1.01M | 0.02% | −23,065−18.8% | Reduced |
| Wealthspring Capital LLC | 97,900 | $1.01M | 0.24% | 00.0% | Unchanged |
| Readystate Asset Management LP | 93,925 | $965.5K | 0.04% | +93,925 | New |
| Alpine Global Management, LLC | 84,057 | $864.1K | 0.19% | +84,057 | New |
| Heights Capital Management, Inc | 58,925 | $605.7K | 0.23% | 00.0% | Unchanged |
| Clear Street Group Inc. | 53,106 | $545.9K | 0.00% | −2,700−4.8% | Reduced |
| CSS LLC | 50,000 | $514.0K | 0.03% | 00.0% | Unchanged |
| Walleye Capital LLC | 34,882 | $358.6K | 0.00% | +34,882 | New |
| SIH Partners, LLLP | 34,078 | $350.3K | 0.02% | +34,078 | New |
| FNY Investment Advisers, LLC | 15,110 | $155.0K | 0.04% | +15,110 | New |
| Marex Group plc | 13,800 | $141.9K | 0.00% | +13,800 | New |
| Rangeley Capital, LLC | 10,000 | $102.8K | 0.09% | +10,000 | New |
| BlueCrest Capital Management Ltd | 10,000 | $102.8K | 0.00% | +10,000 | New |
| PenderFund Capital Management Ltd. | 8,000 | $82.2K | 0.01% | +8,000 | New |
| Morgan Stanley | 87 | $894 | 0.00% | +16+22.5% | Added |
| Weiss Asset Management LP | 0 | $0 | 0.00% | −106,894−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |