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 |
|---|---|---|---|---|---|
| Morgan Stanley | 87 | $894 | 0.00% | +16+22.5% | Added |
| PenderFund Capital Management Ltd. | 8,000 | $82.2K | 0.01% | +8,000 | 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 |
| Marex Group plc | 13,800 | $141.9K | 0.00% | +13,800 | New |
| FNY Investment Advisers, LLC | 15,110 | $155.0K | 0.04% | +15,110 | New |
| SIH Partners, LLLP | 34,078 | $350.3K | 0.02% | +34,078 | New |
| Walleye Capital LLC | 34,882 | $358.6K | 0.00% | +34,882 | New |
| CSS LLC | 50,000 | $514.0K | 0.03% | 00.0% | Unchanged |
| Clear Street Group Inc. | 53,106 | $545.9K | 0.00% | −2,700−4.8% | Reduced |
| Heights Capital Management, Inc | 58,925 | $605.7K | 0.23% | 00.0% | Unchanged |
| Alpine Global Management, LLC | 84,057 | $864.1K | 0.19% | +84,057 | New |
| Readystate Asset Management LP | 93,925 | $965.5K | 0.04% | +93,925 | New |
| Wealthspring Capital LLC | 97,900 | $1.01M | 0.24% | 00.0% | Unchanged |
| Mizuho Securities USA LLC | 99,465 | $1.01M | 0.02% | −23,065−18.8% | Reduced |
| Goldman Sachs Group Inc | 98,304 | $1.01M | 0.00% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 100,000 | $1.03M | 0.01% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 116,548 | $1.20M | 0.00% | +49,868+74.8% | Added |
| Fifth Lane Capital, LP | 125,000 | $1.28M | 1.51% | +125,000 | New |
| Schonfeld Strategic Advisors LLC | 142,507 | $1.46M | 0.01% | +15,682+12.4% | Added |
| Berkley W R Corp | 148,830 | $1.53M | 0.09% | 00.0% | Unchanged |
| Aristeia Capital LLC | 150,000 | $1.54M | 0.04% | 00.0% | Unchanged |
| Citigroup Inc | 181,946 | $1.87M | 0.00% | −18,054−9.0% | Reduced |
| DLD Asset Management, LP | 199,351 | $2.05M | 0.21% | +201+0.1% | Added |
| Shaolin Capital Management LLC | 230,256 | $2.37M | 0.09% | −112,573−32.8% | Reduced |
| HGC Investment Management Inc. | 238,400 | $2.45M | 0.52% | +238,400 | New |
| Context Capital Management, LLC | 250,000 | $2.57M | 0.07% | +50,000+25.0% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 272,907 | $2.81M | 0.01% | −27,093−9.0% | Reduced |
| Radcliffe Capital Management, L.P. | 276,973 | $2.85M | 0.16% | +73,916+36.4% | Added |
| K2 Principal Fund, L.P. | 297,237 | $3.06M | 0.32% | +50,000+20.2% | Added |
| Millennium Management LLC | 297,721 | $3.06M | 0.00% | −279−0.1% | Reduced |
| CNH Partners LLC | 301,692 | $3.10M | 0.07% | 00.0% | Unchanged |
| Periscope Capital Inc. | 322,903 | $3.32M | 0.64% | −42,097−11.5% | Reduced |
| Picton Mahoney Asset Management | 325,000 | $3.34M | 0.04% | 00.0% | Unchanged |
| Centiva Capital, LP | 338,000 | $3.47M | 0.21% | +88,000+35.2% | Added |
| Glazer Capital, LLC | 351,615 | $3.62M | 0.10% | −23,572−6.3% | Reduced |
| HBK Investments L P | 360,000 | $3.70M | 0.04% | −40,000−10.0% | Reduced |
| Healthcare of Ontario Pension Plan Trust Fund | 450,000 | $4.63M | 0.01% | −800,000−64.0% | Reduced |
| 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 |
| Lineage Point Capital LP | 530,957 | $5.46M | 2.07% | +530,957 | New |
| Two Sigma Investments, LP | 537,309 | $5.52M | 0.01% | 00.0% | Unchanged |
| Meteora Capital, LLC | 721,718 | $7.42M | 0.62% | −480,901−40.0% | Reduced |
| Fort Baker Capital Management LP | 800,000 | $8.22M | 0.91% | 00.0% | Unchanged |
| Toronto Dominion Bank | 995,000 | $10.2M | 0.02% | −211,314−17.5% | Reduced |
| Saba Capital Management, L.P. | 1,055,870 | $10.9M | 0.36% | 00.0% | Unchanged |
| Governors Lane LP | 1,116,900 | $11.5M | 1.06% | −50,100−4.3% | Reduced |
| Moore Capital Management, LP | 1,200,000 | $12.3M | 0.25% | 00.0% | Unchanged |
| 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 |
| Harraden Circle Investments, LLC | 2,300,498 | $23.6M | 4.33% | +400,500+21.1% | 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 |