Perimeter Acquis Corp. I Class APMTR
13F holders, Q4 2025 (December 31)53holders +10
11new positions
2sold out
2famous investors
$10.28avg. 13F price*
At the end of Q4 2025, 53 institutions reported holding Perimeter Acquis Corp. I Class A (PMTR) in their 13F filings, up 10 from Q3 2025. 11 opened new positions and 2 sold out. The largest holders were Harraden Circle Investments, LLC ($23.6M), Linden Advisors LP ($15.4M) and Magnetar Financial LLC ($15.4M). 2 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Israel Englander (0.0% of Millennium Management'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 Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 11 | $6.9M |
| Exits | 2 | $2.1M |
All 13F filers, Q3 2025 → Q4 2025: 1,395,435 shares bought and 2,198,891 shares sold, net −803,456 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 53 holders
| Harraden Circle Investments, LLC | 4.85% | Add +21.1% | 2,300,498 | $23.6M |
| Linden Advisors LP | 1.17% | No change | 1,500,000 | $15.4M |
| Magnetar Financial LLC | 0.16% | No change | 1,500,000 | $15.4M |
| Alberta Investment Management Corp | 0.10% | No change | 1,500,000 | $15.4M |
| Moore Capital Management, LP | 0.26% | No change | 1,200,000 | $12.3M |
| Governors Lane LP | 1.07% | Reduce -4.3% | 1,116,900 | $11.5M |
| Saba Capital Management, L.P. | 0.37% | No change | 1,055,870 | $10.9M |
| Toronto Dominion Bank | 0.02% | Reduce -17.5% | 995,000 | $10.2M |
| Fort Baker Capital Management LP | 1.13% | No change | 800,000 | $8.2M |
| Meteora Capital, LLC | 0.64% | Reduce -40.0% | 721,718 | $7.4M |
| Two Sigma Investments, LP | 0.01% | No change | 537,309 | $5.5M |
| Lineage Point Capital LP | 2.09% | — | 530,957 | $5.5M |
| Ghisallo Capital Management LLC | 0.23% | No change | 500,000 | $5.1M |
| Sculptor Capital LP | 0.11% | Reduce -24.3% | 500,000 | $5.1M |
| D. E. Shaw & Co. | 0.00% | No change | 500,000 | $5.1M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.01% | Reduce -64.0% | 450,000 | $4.6M |
| HBK Investments L P | 0.04% | Reduce -10.0% | 360,000 | $3.7M |
| Glazer Capital, LLC | 0.11% | Reduce -6.3% | 351,615 | $3.6M |
| Centiva Capital, LP | 0.21% | Add +35.2% | 338,000 | $3.5M |
| Picton Mahoney Asset Management | 0.04% | No change | 325,000 | $3.3M |
| Periscope Capital Inc. | 0.68% | Reduce -11.5% | 322,903 | $3.3M |
| AQR Arbitrage LLC | 0.08% | No change | 301,692 | $3.1M |
| Millennium Management | 0.00% | Reduce -0.1% | 297,721 | $3.1M |
| K2 Principal Fund, L.P. | 1.15% | Add +20.2% | 297,237 | $3.1M |
| Radcliffe Capital Management, L.P. | 0.40% | Add +36.4% | 276,973 | $2.8M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.01% | Reduce -9.0% | 272,907 | $2.8M |
| Context Capital Management, LLC | 0.86% | Add +25.0% | 250,000 | $2.6M |
| HGC Investment Management Inc. | 0.52% | New | 238,400 | $2.5M |
| Shaolin Capital Management LLC | 0.31% | Reduce -32.8% | 230,256 | $2.4M |
| DLD Asset Management, LP | 0.71% | Add +0.1% | 199,351 | $2.0M |
| Citigroup Inc. | 0.00% | Reduce -9.0% | 181,946 | $1.9M |
| Aristeia Capital, L.L.C. | 0.08% | No change | 150,000 | $1.5M |
| Berkley W R Corp. | 0.09% | No change | 148,830 | $1.5M |
| Schonfeld Strategic Advisors LLC | 0.01% | Add +12.4% | 142,507 | $1.5M |
| Fifth Lane Capital, LP | 1.53% | New | 125,000 | $1.3M |
| JPMorgan Chase & Co. | 0.00% | Add +74.8% | 116,548 | $1.2M |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 0.09% | No change | 100,000 | $1.0M |
| Goldman Sachs Group Inc. | 0.00% | No change | 98,304 | $1.0M |
| Mizuho Securities USA LLC | 0.02% | Reduce -18.8% | 99,465 | $1.0M |
| Wealthspring Capital LLC | 0.24% | No change | 97,900 | $1.0M |
| Readystate Asset Management LP | 0.07% | New | 93,925 | $966K |
| Alpine Global Management, LLC | 0.21% | New | 84,057 | $864K |
| Heights Capital Management, Inc. | 0.23% | No change | 58,925 | $606K |
| Clear Street Group Inc. | 0.00% | Reduce -4.8% | 53,106 | $546K |
| CSS LLC | 0.09% | No change | 50,000 | $514K |
| Walleye Capital LLC | 0.00% | New | 34,882 | $359K |
| SIH Partners, LLLP | 0.02% | New | 34,078 | $350K |
| FNY Investment Advisers, LLC | 0.04% | New | 15,110 | $155K |
| Marex Group Ltd | 0.00% | New | 13,800 | $142K |
| Rangeley Capital, LLC | 0.09% | New | 10,000 | $103K |
| BlueCrest Capital Management Ltd | 0.00% | New | 10,000 | $103K |
| PenderFund Capital Management Ltd. | 0.03% | New | 8,000 | $82K |
| Morgan Stanley | 0.00% | Add +22.5% | 87 | $894 |
"% 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.