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Disclosery

PMTR PERIMETER ACQUISITION CORP I

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COM CL A (common), issuer CIK 2061473

52 managers (52 13F filers) reported a position in PMTR shares at 2026-03-31, 21,922,487 shares in all. 7 filers opened a position and 8 filers sold out during the quarter.

Managers
52
13F filers
52
New
7
Added
10
Reduced
11
Sold out
8
Shares held by filers
21,922,487

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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, …2,440,298$25M5.02%+139,80013F-HRTimelineGroup
Fort Baker Capital Management LP1,573,684$16.1M1.43%+773,68413F-HRTimeline
Linden Advisors LPin group Linden Advisors LP1,500,000$15.4M0.09%013F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC1,500,000$15.4M0.16%013F-HRTimelineGroup
Alberta Investment Management Corp1,500,000$15.4M0.09%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP1,200,000$12.3M0.45%013F-HRTimeline
Governors Lane LP1,116,900$11.5M1.43%013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK909,456$9.33M0.02%-85,54413F-HRTimelineGroup
Saba Capital Management, L.P.in group Saba Capital Management, L.P.804,878$8.26M0.26%-250,99213F-HRTimelineGroup
Lineage Point Capital LP733,364$7.52M1.84%+202,40713F-HRTimeline
Meteora Capital, LLC698,202$7.16M0.53%-23,51613F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP537,309$5.51M<0.01%013F-HRTimelineGroup
Sculptor Capital LPin group Sculptor Capital LP500,000$5.13M0.06%013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.500,000$5.12M<0.01%013F-HRTimelineGroup
Ghisallo Capital Management LLC500,000$5.12M0.14%013F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC379,931$3.9M0.08%+28,31613F-HRTimelineGroup
HBK INVESTMENTS L P360,000$3.69M0.05%013F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…350,000$3.59M0.01%-100,00013F-HRTimeline
Radcliffe Capital Management, L.P.338,534$3.47M0.26%+61,56113F-HRTimeline
Centiva Capital, LP338,000$3.46M0.16%013F-HRTimeline
PICTON MAHONEY ASSET MANAGEMENT325,000$3.33M0.03%013F-HRTimeline
Periscope Capital Inc.323,103$3.32M0.58%+20013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC314,650$3.23M<0.01%+16,92913F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.297,237$3.05M0.32%013F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC283,119$2.9M0.05%-18,57313F-HRTimelineGroup
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…252,751$2.59M0.01%-20,15613F-HRTimeline
Shaolin Capital Management LLC250,256$2.57M0.11%+20,00013F-HRTimeline
Context Capital Management, LLC250,000$2.56M0.06%013F-HRTimeline
DLD Asset Management, LP199,351$2.05M0.21%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC181,946$1.86M<0.01%013F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.150,000$1.54M0.04%013F-HRTimeline
Westchester Capital Management, LLCin group Westchester Capital Managemen…150,000$1.54M0.07%new13F-HRTimelineGroup
BERKLEY W R CORP148,830$1.53M0.08%013F-HRTimeline
Schonfeld Strategic Advisors LLC140,000$1.44M0.01%-2,50713F-HRTimeline
READYSTATE ASSET MANAGEMENT LP136,526$1.4M0.08%+42,60113F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO129,992$1.33M<0.01%+13,44413F-HR/ATimelineGroup
TENOR CAPITAL MANAGEMENT Co., L.P.100,000$1.03M0.02%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC98,304$1.01M<0.01%013F-HRTimelineGroup
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC82,991$851K0.03%new13F-HRTimelineGroup
HEIGHTS CAPITAL MANAGEMENT, INCin group HEIGHTS CAPITAL MANAGEMENT, I…58,925$604K0.17%013F-HRTimelineGroup
StoneX Group Inc.in group StoneX Group Inc.49,321$506K0.03%new13F-HRTimelineGroup
CSS LLC/IL48,235$495K0.03%-1,76513F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC39,387$404K0.02%new13F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC34,882$358K<0.01%013F-HR/ATimelineGroup
SIH Partners, LLLPin group SIH Partners, LLLP27,145$278K0.01%-6,93313F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.23,941$246K<0.01%-29,16513F-HRTimelineGroup
FNY Investment Advisers, LLC15,110$154K0.07%013F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS11,320$116K<0.01%new13F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC10,940$112K<0.01%new13F-HRTimelineGroup
PenderFund Capital Management Ltd.8,000$82K0.01%013F-HRTimeline
UBS Group AGin group UBS Group AG600$6.16K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY69$708<0.01%-1813F-HRTimelineGroup