Perimeter Acquisition Corp. I - PMTR

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
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