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, 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
- 52
- −1 vs. Q4 2025
- Shares held
- 21.9M
- +425.7K (+2.0%) vs. Q4 2025
- Total value
- $224.8M
- +$3.87M (+1.8%) vs. Q4 2025
- New holders
- 7
- 10 more added
- Sold out
- 8
- 11 more reduced
Compare with Q4 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, 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 |
|---|---|---|---|---|---|
| Morgan Stanley | 69 | $708 | 0.00% | −18−20.7% | Reduced |
| UBS Group AG | 600 | $6.16K | 0.00% | +600 | New |
| PenderFund Capital Management Ltd. | 8,000 | $82.0K | 0.01% | 00.0% | Unchanged |
| Citadel Advisors LLC | 10,940 | $112.1K | 0.00% | +10,940 | New |
| BNP Paribas Arbitrage, SA | 11,320 | $116.0K | 0.00% | +11,320 | New |
| FNY Investment Advisers, LLC | 15,110 | $154.0K | 0.07% | 00.0% | Unchanged |
| Clear Street Group Inc. | 23,941 | $245.6K | 0.00% | −29,165−54.9% | Reduced |
| SIH Partners, LLLP | 27,145 | $278.2K | 0.01% | −6,933−20.3% | Reduced |
| Walleye Capital LLC | 34,882 | $357.5K | 0.00% | 00.0% | Unchanged |
| Virtu Financial LLC | 39,387 | $404.0K | 0.02% | +39,387 | New |
| CSS LLC | 48,235 | $494.9K | 0.03% | −1,765−3.5% | Reduced |
| StoneX Group Inc. | 49,321 | $506.0K | 0.03% | +49,321 | New |
| Heights Capital Management, Inc | 58,925 | $604.0K | 0.17% | 00.0% | Unchanged |
| Sona Asset Management (US) LLC | 82,991 | $851.5K | 0.03% | +82,991 | New |
| Goldman Sachs Group Inc | 98,304 | $1.01M | 0.00% | 00.0% | Unchanged |
| Tenor Capital Management Co., L.P. | 100,000 | $1.03M | 0.02% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 129,992 | $1.33M | 0.00% | +13,444+11.5% | Added |
| Readystate Asset Management LP | 136,526 | $1.40M | 0.08% | +42,601+45.4% | Added |
| Schonfeld Strategic Advisors LLC | 140,000 | $1.44M | 0.01% | −2,507−1.8% | Reduced |
| Berkley W R Corp | 148,830 | $1.53M | 0.08% | 00.0% | Unchanged |
| Westchester Capital Management, LLC | 150,000 | $1.54M | 0.07% | +150,000 | New |
| Aristeia Capital LLC | 150,000 | $1.54M | 0.04% | 00.0% | Unchanged |
| Citigroup Inc | 181,946 | $1.86M | 0.00% | 00.0% | Unchanged |
| DLD Asset Management, LP | 199,351 | $2.05M | 0.21% | 00.0% | Unchanged |
| Context Capital Management, LLC | 250,000 | $2.56M | 0.06% | 00.0% | Unchanged |
| Shaolin Capital Management LLC | 250,256 | $2.57M | 0.11% | +20,000+8.7% | Added |
| Commonwealth of Pennsylvania Public School Empls Retrmt Sys | 252,751 | $2.59M | 0.01% | −20,156−7.4% | Reduced |
| CNH Partners LLC | 283,119 | $2.90M | 0.05% | −18,573−6.2% | Reduced |
| K2 Principal Fund, L.P. | 297,237 | $3.05M | 0.32% | 00.0% | Unchanged |
| Millennium Management LLC | 314,650 | $3.23M | 0.00% | +16,929+5.7% | Added |
| Periscope Capital Inc. | 323,103 | $3.32M | 0.58% | +200+0.1% | Added |
| Picton Mahoney Asset Management | 325,000 | $3.33M | 0.03% | 00.0% | Unchanged |
| Centiva Capital, LP | 338,000 | $3.46M | 0.16% | 00.0% | Unchanged |
| Radcliffe Capital Management, L.P. | 338,534 | $3.47M | 0.26% | +61,561+22.2% | Added |
| Healthcare of Ontario Pension Plan Trust Fund | 350,000 | $3.59M | 0.01% | −100,000−22.2% | Reduced |
| HBK Investments L P | 360,000 | $3.69M | 0.05% | 00.0% | Unchanged |
| Glazer Capital, LLC | 379,931 | $3.90M | 0.08% | +28,316+8.1% | Added |
| D. E. Shaw & Co., Inc. | 500,000 | $5.13M | 0.00% | 00.0% | Unchanged |
| Ghisallo Capital Management LLC | 500,000 | $5.13M | 0.14% | 00.0% | Unchanged |
| Sculptor Capital LP | 500,000 | $5.13M | 0.06% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 537,309 | $5.51M | 0.00% | 00.0% | Unchanged |
| Meteora Capital, LLC | 698,202 | $7.16M | 0.53% | −23,516−3.3% | Reduced |
| Lineage Point Capital LP | 733,364 | $7.52M | 1.84% | +202,407+38.1% | Added |
| Saba Capital Management, L.P. | 804,878 | $8.26M | 0.26% | −250,992−23.8% | Reduced |
| Toronto Dominion Bank | 909,456 | $9.33M | 0.02% | −85,544−8.6% | Reduced |
| Governors Lane LP | 1,116,900 | $11.5M | 1.43% | 00.0% | Unchanged |
| Moore Capital Management, LP | 1,200,000 | $12.3M | 0.45% | 00.0% | Unchanged |
| Linden Advisors LP | 1,500,000 | $15.4M | 0.09% | 00.0% | Unchanged |
| Magnetar Financial LLC | 1,500,000 | $15.4M | 0.16% | 00.0% | Unchanged |
| Alberta Investment Management Corp | 1,500,000 | $15.4M | 0.09% | 00.0% | Unchanged |
| Fort Baker Capital Management LP | 1,573,684 | $16.1M | 1.43% | +773,684+96.7% | Added |
| Harraden Circle Investments, LLC | 2,440,298 | $25.0M | 5.02% | +139,800+6.1% | Added |
| HGC Investment Management Inc. | 0 | $0 | 0.00% | −238,400−100.0% | Sold out |
| Fifth Lane Capital, LP | 0 | $0 | 0.00% | −125,000−100.0% | Sold out |
| Mizuho Securities USA LLC | 0 | $0 | 0.00% | −99,465−100.0% | Sold out |
| Wealthspring Capital LLC | 0 | $0 | 0.00% | −97,900−100.0% | Sold out |
| Alpine Global Management, LLC | 0 | $0 | 0.00% | −84,057−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −13,800−100.0% | Sold out |
| Rangeley Capital, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| BlueCrest Capital Management Ltd | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |