Perimeter Acquisition Corp. I - PMTR
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | History | Added to | 2,300,498 | 23,649 | 4.33% | 3.76% | 1 | +400,500 | 21.08% | Q4 2025 | Feb 13, 2026 |
| LINDEN ADVISORS LP | History | No change | 1,500,000 | 15,420 | 0.09% | 0.1% | 2 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Magnetar Financial LLC | History | No change | 1,500,000 | 15,420 | 0.15% | 0.09% | 3 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Alberta Investment Management Corp | History | No change | 1,500,000 | 15,420 | 0.09% | 0.11% | 4 | 0 | 0.0% | Q4 2025 | Feb 19, 2026 |
| MOORE CAPITAL MANAGEMENT, LP | History | No change | 1,200,000 | 12,336 | 0.18% | 0.17% | 5 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| TORONTO DOMINION BANK | History | Reduced | 1,136,694 | 11,730 | 0.02% | 0.02% | 6 | -217,820 | -16.08% | Q4 2025 | Feb 17, 2026 |
| Governors Lane LP | History | Reduced | 1,116,900 | 11,481 | 0.68% | 0.91% | 7 | -50,100 | -4.29% | Q4 2025 | Feb 17, 2026 |
| Saba Capital Management, L.P. | History | No change | 1,055,870 | 10,854 | 0.32% | 0.29% | 8 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Fort Baker Capital Management LP | History | No change | 800,000 | 8,224 | 0.9% | 1.29% | 9 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| METEORA CAPITAL, LLC | History | Reduced | 721,718 | 7,419 | 0.62% | 1.29% | 10 | -480,901 | -39.99% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | No change | 537,309 | 5,523 | 0.01% | 0.01% | 11 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Lineage Point Capital LP | History | New | 530,957 | 5,458 | 2.07% | — | 12 | +530,957 | New | Q4 2025 | Feb 26, 2026 |
| Sculptor Capital LP | History | Reduced | 500,000 | 5,140 | 0.05% | 0.08% | 14 | -160,249 | -24.27% | Q4 2025 | Feb 13, 2026 |
| D. E. Shaw & Co., Inc. | History | No change | 500,000 | 5,140 | 0.0% | 0.0% | 13 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Ghisallo Capital Management LLC | History | No change | 500,000 | 5,140 | 0.23% | 0.17% | 15 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 446,578 | 4,638 | 0.0% | 0.0% | 16 | -779 | -0.17% | Q4 2025 | Feb 17, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | Reduced | 450,000 | 4,626 | 0.01% | 0.02% | 17 | -800,000 | -64.0% | Q4 2025 | Feb 13, 2026 |
| HBK INVESTMENTS L P | History | Reduced | 360,000 | 3,700 | 0.03% | 0.04% | 18 | -40,000 | -10.0% | Q4 2025 | Feb 17, 2026 |
| GLAZER CAPITAL, LLC | History | Reduced | 351,615 | 3,615 | 0.1% | 0.13% | 19 | -23,572 | -6.28% | Q4 2025 | Feb 13, 2026 |
| Centiva Capital, LP | History | Added to | 338,000 | 3,474 | 0.03% | 0.02% | 20 | +88,000 | 35.2% | Q4 2025 | Feb 13, 2026 |
| PICTON MAHONEY ASSET MANAGEMENT | History | No change | 325,000 | 3,341 | 0.03% | 0.03% | 21 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| PERISCOPE CAPITAL INC. | History | Reduced | 322,903 | 3,319 | 0.38% | 0.59% | 22 | -42,097 | -11.53% | Q4 2025 | Feb 10, 2026 |
| AQR Arbitrage LLC | History | No change | 301,692 | 3,101 | 0.07% | 0.08% | 23 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| K2 PRINCIPAL FUND, L.P. | History | Added to | 297,237 | 3,055 | 0.25% | 0.2% | 24 | +50,000 | 20.22% | Q4 2025 | Feb 13, 2026 |
| Radcliffe Capital Management, L.P. | History | Added to | 276,973 | 2,847 | 0.15% | 0.13% | 25 | +73,916 | 36.4% | Q4 2025 | Feb 17, 2026 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | History | Reduced | 272,907 | 2,805 | 0.01% | 0.02% | 26 | -27,093 | -9.03% | Q4 2025 | Feb 10, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 266,548 | 2,797 | 0.0% | 0.0% | 27 | +49,868 | 23.01% | Q4 2025 | Feb 11, 2026 |
| LMR Partners LLP | History | No change | 250,000 | 2,650 | 0.0% | 0.01% | 28 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Context Capital Management, LLC | History | Added to | 250,000 | 2,570 | 0.07% | 0.06% | 29 | +50,000 | 25.0% | Q4 2025 | Feb 13, 2026 |
| HGC Investment Management Inc. | History | Reduced | 238,400 | 2,450 | 0.52% | 0.97% | 30 | -150,000 | -38.62% | Q4 2025 | Feb 17, 2026 |
| Shaolin Capital Management LLC | History | Reduced | 230,256 | 2,367 | 0.07% | 0.15% | 31 | -112,573 | -32.84% | Q4 2025 | Feb 17, 2026 |
| DLD Asset Management, LP | History | Added to | 199,351 | 2,049 | 0.15% | 0.15% | 32 | +201 | 0.1% | Q4 2025 | Feb 13, 2026 |
| CITIGROUP INC | History | Reduced | 181,946 | 1,870 | 0.0% | 0.0% | 33 | -18,054 | -9.03% | Q4 2025 | Feb 13, 2026 |
| Westchester Capital Management, LLC | History | No change | 150,000 | 1,599 | 0.07% | 0.07% | 34 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| ARISTEIA CAPITAL, L.L.C. | History | No change | 150,000 | 1,542 | 0.03% | 0.04% | 35 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| BERKLEY W R CORP | History | No change | 148,830 | 1,529 | 0.07% | 0.09% | 36 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Schonfeld Strategic Advisors LLC | History | Added to | 142,507 | 1,464 | 0.01% | 0.01% | 37 | +15,682 | 12.37% | Q4 2025 | Feb 17, 2026 |
| FIFTH LANE CAPITAL, LP | History | New | 125,000 | 1,285 | 0.97% | — | 38 | +125,000 | New | Q4 2025 | Feb 13, 2026 |
| READYSTATE ASSET MANAGEMENT LP | History | Added to | 119,970 | 1,243 | 0.05% | 0.01% | 39 | +93,925 | 360.63% | Q4 2025 | Feb 17, 2026 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | History | No change | 100,000 | 1,028 | 0.01% | 0.01% | 40 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| GOLDMAN SACHS GROUP INC | History | No change | 98,304 | 1,010 | 0.0% | 0.0% | 41 | 0 | 0.0% | Q4 2025 | Mar 25, 2026 |
| MIZUHO SECURITIES USA LLC | History | Reduced | 99,465 | 1,009 | 0.02% | 0.03% | 42 | -23,065 | -18.82% | Q4 2025 | Feb 09, 2026 |
| Wealthspring Capital LLC | History | No change | 97,900 | 1,006 | 0.24% | 0.24% | 43 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| Alpine Global Management, LLC | History | New | 84,057 | 864 | 0.19% | — | 44 | +84,057 | New | Q4 2025 | Feb 26, 2026 |
| Clear Street Group Inc. | History | Added to | 61,942 | 639 | 0.0% | 0.0% | 45 | +1,609 | 2.67% | Q4 2025 | Feb 13, 2026 |
| HEIGHTS CAPITAL MANAGEMENT, INC | History | No change | 58,925 | 605 | 0.22% | 0.17% | 46 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| CSS LLC/IL | History | No change | 50,000 | 514 | 0.02% | 0.02% | 47 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Walleye Capital LLC | History | New | 34,882 | 358 | 0.0% | — | 48 | +34,882 | New | Q4 2025 | Feb 13, 2026 |
| SIH Partners, LLLP | History | New | 34,078 | 350 | 0.01% | — | 49 | +34,078 | New | Q4 2025 | Feb 17, 2026 |
| Parallax Volatility Advisers, L.P. | History | No change | 15,478 | 164 | 0.0% | 0.0% | 50 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| FNY Investment Advisers, LLC | History | New | 15,110 | 155 | 0.04% | — | 51 | +15,110 | New | Q4 2025 | Jan 16, 2026 |
| Marex Group plc | History | New | 13,800 | 141 | 0.0% | — | 52 | +13,800 | New | Q4 2025 | Feb 12, 2026 |
| Rangeley Capital, LLC | History | New | 10,000 | 102 | 0.08% | — | 53 | +10,000 | New | Q4 2025 | Feb 17, 2026 |
| BlueCrest Capital Management Ltd | History | New | 10,000 | 102 | 0.0% | — | 54 | +10,000 | New | Q4 2025 | Feb 17, 2026 |
| PenderFund Capital Management Ltd. | History | Reduced | 8,000 | 82 | 0.01% | 0.02% | 55 | -2,000 | -20.0% | Q4 2025 | Feb 17, 2026 |
| UBS Group AG | History | New | 649 | 6 | 0.0% | — | 56 | +649 | New | Q4 2025 | Jan 29, 2026 |
| Weiss Asset Management LP | History | Closed out | 0 | 0 | — | 0.38% | — | -106,894 | -100.0% | Q3 2025 | Feb 17, 2026 |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | History | Closed out | 0 | 0 | — | 0.17% | — | -100,000 | -100.0% | Q3 2025 | Feb 13, 2026 |
| MORGAN STANLEY | History | Added to | 87 | 0 | — | — | — | +16 | 22.54% | Q4 2025 | Feb 13, 2026 |