Perimeter Acquis Corp. I Class APMTR
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 52 institutions reported holding Perimeter Acquis Corp. I Class A (PMTR) in their 13F filings, down 1 from Q4 2025. 7 opened new positions and 8 sold out. The largest holders were Harraden Circle Investments, LLC ($25.0M), Fort Baker Capital Management LP ($16.1M) and Linden Advisors LP ($15.4M). 3 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Perimeter Acquis Corp. I Class A
- CUSIP
- G7010A129
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 7 | $3.5M |
| Exits | 8 | $7.0M |
All 13F filers, Q4 2025 → Q1 2026: 1,643,501 shares bought and 1,217,791 shares sold, net +425,710 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 52 holders
| Harraden Circle Investments, LLC | 5.54% | Add +6.1% | 2,440,298 | $25.0M |
| Fort Baker Capital Management LP | 1.69% | Add +96.7% | 1,573,684 | $16.1M |
| Linden Advisors LP | 0.89% | No change | 1,500,000 | $15.4M |
| Magnetar Financial LLC | 0.17% | No change | 1,500,000 | $15.4M |
| Alberta Investment Management Corp | 0.11% | No change | 1,500,000 | $15.4M |
| Moore Capital Management, LP | 0.49% | No change | 1,200,000 | $12.3M |
| Governors Lane LP | 1.44% | No change | 1,116,900 | $11.5M |
| Toronto Dominion Bank | 0.02% | Reduce -8.6% | 909,456 | $9.3M |
| Saba Capital Management, L.P. | 0.27% | Reduce -23.8% | 804,878 | $8.3M |
| Lineage Point Capital LP | 1.86% | Add +38.1% | 733,364 | $7.5M |
| Meteora Capital, LLC | 0.53% | Reduce -3.3% | 698,202 | $7.2M |
| Two Sigma Investments, LP | 0.00% | No change | 537,309 | $5.5M |
| Sculptor Capital LP | 0.12% | No change | 500,000 | $5.1M |
| Ghisallo Capital Management LLC | 0.14% | No change | 500,000 | $5.1M |
| D. E. Shaw & Co. | 0.00% | No change | 500,000 | $5.1M |
| Glazer Capital, LLC | 0.09% | Add +8.1% | 379,931 | $3.9M |
| HBK Investments L P | 0.05% | No change | 360,000 | $3.7M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Reduce -22.2% | 350,000 | $3.6M |
| Radcliffe Capital Management, L.P. | 0.39% | Add +22.2% | 338,534 | $3.5M |
| Centiva Capital, LP | 0.16% | No change | 338,000 | $3.5M |
| Picton Mahoney Asset Management | 0.03% | No change | 325,000 | $3.3M |
| Periscope Capital Inc. | 0.60% | Add +0.1% | 323,103 | $3.3M |
| Millennium Management | 0.00% | Add +5.7% | 314,650 | $3.2M |
| K2 Principal Fund, L.P. | 0.93% | No change | 297,237 | $3.0M |
| AQR Arbitrage LLC | 0.06% | Reduce -6.2% | 283,119 | $2.9M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.01% | Reduce -7.4% | 252,751 | $2.6M |
| Shaolin Capital Management LLC | 0.29% | Add +8.7% | 250,256 | $2.6M |
| Context Capital Management, LLC | 0.70% | No change | 250,000 | $2.6M |
| DLD Asset Management, LP | 0.62% | No change | 199,351 | $2.0M |
| Citigroup Inc. | 0.00% | No change | 181,946 | $1.9M |
| Aristeia Capital, L.L.C. | 0.06% | No change | 150,000 | $1.5M |
| Westchester Capital Management, LLC | 0.07% | New | 150,000 | $1.5M |
| Berkley W R Corp. | 0.08% | No change | 148,830 | $1.5M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -1.8% | 140,000 | $1.4M |
| Readystate Asset Management LP | 0.14% | Add +45.4% | 136,526 | $1.4M |
| JPMorgan Chase & Co. | 0.00% | Add +11.5% | 129,992 | $1.3M |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 0.07% | No change | 100,000 | $1.0M |
| Goldman Sachs Group Inc. | 0.00% | No change | 98,304 | $1.0M |
| Sona Asset Management (us) LLC | 0.05% | New | 82,991 | $851K |
| Heights Capital Management, Inc. | 0.17% | No change | 58,925 | $604K |
| StoneX Group Inc. | 0.03% | New | 49,321 | $506K |
| CSS LLC | 0.08% | Reduce -3.5% | 48,235 | $495K |
| Virtu Financial LLC | 0.02% | New | 39,387 | $404K |
| Walleye Capital LLC | 0.00% | No change | 34,882 | $358K |
| SIH Partners, LLLP | 0.01% | Reduce -20.3% | 27,145 | $278K |
| Clear Street Group Inc. | 0.00% | Reduce -54.9% | 23,941 | $246K |
| FNY Investment Advisers, LLC | 0.07% | No change | 15,110 | $154K |
| BNP Paribas Financial Markets | 0.00% | New | 11,320 | $116K |
| Citadel Advisors | 0.00% | New | 10,940 | $112K |
| PenderFund Capital Management Ltd. | 0.04% | No change | 8,000 | $82K |
| UBS Group AG | 0.00% | New | 600 | $6K |
| Morgan Stanley | 0.00% | Reduce -20.7% | 69 | $708 |
"% of holder's portfolio" is PMTR's weight in each manager's 13F, not the share of Perimeter Acquis Corp. I Class A the manager owns.