Perimeter Acquis Corp. I Class APMTR
13F holders, Q3 2025 (September 30)At the end of Q3 2025, 43 institutions reported holding Perimeter Acquis Corp. I Class A (PMTR) in their 13F filings, up 18 from Q2 2025. 5 opened new positions and 1 sold out. The largest holders were Harraden Circle Investments, LLC ($19.3M), Linden Advisors LP ($15.4M) and Alberta Investment Management Corp ($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 Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 5 | $19.5M |
| Exits | 1 | $7.6M |
All 13F filers, Q2 2025 → Q3 2025: 2,362,415 shares bought and 1,708,944 shares sold, net +653,471 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 43 holders
| Harraden Circle Investments, LLC | 4.14% | No change | 1,899,998 | $19.3M |
| Linden Advisors LP | 1.46% | No change | 1,500,000 | $15.4M |
| Alberta Investment Management Corp | 0.12% | No change | 1,500,000 | $15.4M |
| Magnetar Financial LLC | 0.10% | No change | 1,500,000 | $15.4M |
| Healthcare of Ontario Pension Plan Trust Fund | 0.02% | Reduce -16.7% | 1,250,000 | $12.8M |
| Toronto Dominion Bank | 0.02% | New | 1,206,314 | $12.3M |
| Meteora Capital, LLC | 1.35% | Add +15.1% | 1,202,619 | $12.2M |
| Moore Capital Management, LP | 0.25% | No change | 1,200,000 | $12.2M |
| Governors Lane LP | 1.66% | No change | 1,167,000 | $11.9M |
| Saba Capital Management, L.P. | 0.36% | Reduce -0.3% | 1,055,870 | $10.7M |
| Fort Baker Capital Management LP | 1.39% | No change | 800,000 | $8.1M |
| Sculptor Capital LP | 0.15% | Add +32.0% | 660,249 | $6.7M |
| Two Sigma Investments, LP | 0.01% | No change | 537,309 | $5.5M |
| Ghisallo Capital Management LLC | 0.17% | No change | 500,000 | $5.1M |
| D. E. Shaw & Co. | 0.00% | No change | 500,000 | $5.1M |
| HBK Investments L P | 0.07% | No change | 400,000 | $4.1M |
| Glazer Capital, LLC | 0.14% | Reduce -9.9% | 375,187 | $3.8M |
| Periscope Capital Inc. | 0.94% | Add +10.5% | 365,000 | $3.7M |
| Shaolin Capital Management LLC | 0.66% | Reduce -45.3% | 342,829 | $3.5M |
| Picton Mahoney Asset Management | 0.04% | No change | 325,000 | $3.3M |
| AQR Arbitrage LLC | 0.11% | Reduce -24.6% | 301,692 | $3.1M |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | 0.02% | No change | 300,000 | $3.1M |
| Millennium Management | 0.00% | New | 298,000 | $3.0M |
| Centiva Capital, LP | 0.24% | New | 250,000 | $2.6M |
| K2 Principal Fund, L.P. | 0.90% | No change | 247,237 | $2.5M |
| Radcliffe Capital Management, L.P. | 0.42% | Add +80.3% | 203,057 | $2.1M |
| Citigroup Inc. | 0.00% | No change | 200,000 | $2.0M |
| Context Capital Management, LLC | 0.42% | No change | 200,000 | $2.0M |
| DLD Asset Management, LP | 0.85% | No change | 199,150 | $2.0M |
| Aristeia Capital, L.L.C. | 0.08% | No change | 150,000 | $1.5M |
| Berkley W R Corp. | 0.10% | No change | 148,830 | $1.5M |
| Schonfeld Strategic Advisors LLC | 0.01% | Reduce -49.3% | 126,825 | $1.3M |
| Mizuho Securities USA LLC | 0.03% | Reduce -3.5% | 122,530 | $1.2M |
| Weiss Asset Management LP | 0.02% | Reduce -57.2% | 106,894 | $1.1M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.03% | No change | 100,000 | $1.0M |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 0.11% | No change | 100,000 | $1.0M |
| Goldman Sachs Group Inc. | 0.00% | New | 98,304 | $1000K |
| Wealthspring Capital LLC | 0.24% | No change | 97,900 | $996K |
| JPMorgan Chase & Co. | 0.00% | New | 66,680 | $683K |
| Heights Capital Management, Inc. | 0.20% | Reduce -17.4% | 58,925 | $604K |
| Clear Street Group Inc. | 0.00% | — | 55,806 | $568K |
| CSS LLC | 0.09% | No change | 50,000 | $509K |
| Morgan Stanley | 0.00% | Add +26.8% | 71 | $722 |
"% 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.