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Disclosery

PMTR PERIMETER ACQUISITION CORP I

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COM CL A (common), issuer CIK 2061473

53 managers (53 13F filers) reported a position in PMTR shares at 2025-12-31, 21,496,777 shares in all. 11 filers opened a position and 2 filers sold out during the quarter.

Managers
53
13F filers
53
New
11
Added
9
Reduced
14
Sold out
2
Shares held by filers
21,496,777

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Harraden Circle Investments, LLCin group Harraden Circle Investments, …2,300,498$23.6M4.33%+400,50013F-HRTimelineGroup
Linden Advisors LPin group Linden Advisors LP1,500,000$15.4M0.09%013F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC1,500,000$15.4M0.15%013F-HRTimelineGroup
Alberta Investment Management Corp1,500,000$15.4M0.09%013F-HR/ATimeline
MOORE CAPITAL MANAGEMENT, LP1,200,000$12.3M0.25%013F-HRTimeline
Governors Lane LP1,116,900$11.5M1.06%-50,10013F-HRTimeline
Saba Capital Management, L.P.in group Saba Capital Management, L.P.1,055,870$10.9M0.36%013F-HRTimelineGroup
TORONTO DOMINION BANKin group TORONTO DOMINION BANK995,000$10.2M0.02%-211,31413F-HRTimelineGroup
Fort Baker Capital Management LP800,000$8.22M0.91%013F-HRTimeline
Meteora Capital, LLC721,718$7.42M0.62%-480,90113F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP537,309$5.52M0.01%013F-HRTimelineGroup
Lineage Point Capital LP530,957$5.46M2.07%13F-HR/ATimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.500,000$5.14M<0.01%013F-HRTimelineGroup
Sculptor Capital LPin group Sculptor Capital LP500,000$5.14M0.06%-160,24913F-HRTimelineGroup
Ghisallo Capital Management LLC500,000$5.14M0.23%013F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…450,000$4.63M0.01%-800,00013F-HRTimeline
HBK INVESTMENTS L P360,000$3.7M0.04%-40,00013F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC351,615$3.62M0.1%-23,57213F-HRTimelineGroup
Centiva Capital, LP338,000$3.47M0.21%+88,00013F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT325,000$3.34M0.04%013F-HRTimeline
Periscope Capital Inc.322,903$3.32M0.64%-42,09713F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC301,692$3.1M0.07%013F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC297,721$3.06M<0.01%-27913F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.297,237$3.06M0.32%+50,00013F-HRTimeline
Radcliffe Capital Management, L.P.276,973$2.85M0.16%+73,91613F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…272,907$2.81M0.01%-27,09313F-HRTimeline
Context Capital Management, LLC250,000$2.57M0.07%+50,00013F-HRTimeline
HGC Investment Management Inc.238,400$2.45M0.52%new13F-HRTimeline
Shaolin Capital Management LLC230,256$2.37M0.09%-112,57313F-HRTimeline
DLD Asset Management, LP199,351$2.05M0.21%+20113F-HRTimeline
CITIGROUP INCin group CITIGROUP INC181,946$1.87M<0.01%-18,05413F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.150,000$1.54M0.04%013F-HRTimeline
BERKLEY W R CORP148,830$1.53M0.09%013F-HRTimeline
Schonfeld Strategic Advisors LLC142,507$1.46M0.01%+15,68213F-HRTimeline
FIFTH LANE CAPITAL, LP125,000$1.28M1.51%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO116,548$1.2M<0.01%+49,86813F-HRTimelineGroup
TENOR CAPITAL MANAGEMENT Co., L.P.100,000$1.03M0.01%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC98,304$1.01M<0.01%013F-HR/ATimelineGroup
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC99,465$1.01M0.02%-23,06513F-HRTimelineGroup
Wealthspring Capital LLCin group Wealthspring Capital LLC97,900$1.01M0.24%013F-HRTimelineGroup
READYSTATE ASSET MANAGEMENT LP93,925$966K0.04%new13F-HRTimeline
Alpine Global Management, LLC84,057$864K0.19%new13F-HR/ATimeline
HEIGHTS CAPITAL MANAGEMENT, INCin group HEIGHTS CAPITAL MANAGEMENT, I…58,925$606K0.23%013F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.53,106$546K<0.01%-2,70013F-HRTimelineGroup
CSS LLC/IL50,000$514K0.03%013F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC34,882$359K<0.01%new13F-HRTimelineGroup
SIH Partners, LLLPin group SIH Partners, LLLP34,078$350K0.02%new13F-HRTimelineGroup
FNY Investment Advisers, LLC15,110$155K0.04%new13F-HRTimeline
Marex Group Ltdin group Marex Group Ltd13,800$142K<0.01%new13F-HRTimelineGroup
Rangeley Capital, LLC10,000$103K0.09%new13F-HRTimeline
BlueCrest Capital Management Ltd10,000$103K<0.01%new13F-HRTimeline
PenderFund Capital Management Ltd.8,000$82.2K0.01%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY87$894<0.01%+1613F-HR/ATimelineGroup