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PMTR

Perimeter Acquisition Corp I
PMTR

52 hedge funds and large institutions have $225M invested in Perimeter Acquisition Corp I in 2026 Q1 according to their latest regulatory filings, with 7 funds opening new positions, 10 increasing their positions, 11 reducing their positions, and 8 closing their positions.

New
Increased
Maintained
Reduced
Closed

1.72% more ownership

Funds ownership: 86.72% → 88.44% (+1.7%)

2% more capital invested

Capital invested by funds: $221M → $225M (+$3.87M)

0% more funds holding in top 10

Funds holding in top 10: 2 → 2 (0)

9% less repeat investments, than reductions

Existing positions increased: 10 | Existing positions reduced: 11

2% less funds holding

Funds holding: 53 → 52 (-1)

13% less first-time investments, than exits

New positions opened: 7 | Existing positions closed: 8

Holders
52
Holders Change
-1
Holders Change %
-1.89%
% of All Funds
0.64%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
7
Increased
10
Reduced
11
Closed
8
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
FBCM
Fort Baker Capital Management
California
+$8M
2
LPC
Lineage Point Capital
Florida
+$2.09M
3
WCMNY
Westchester Capital Management (New York)
New York
+$1.55M
4
HCI
Harraden Circle Investments
New York
+$1.45M
5
SAMU
SONA Asset Management (US)
New York
+$859K

Top Sellers

Rank Fund Capital Flow
1
SCM
Saba Capital Management
New York
-$2.6M
2
HIM
HGC Investment Management
Ontario, Canada
-$2.45M
3
FLC
Fifth Lane Capital
Texas
-$1.28M
4
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$1.03M
5
MSU
Mizuho Securities USA
New York
-$1.01M
Name Holding Trade Value Shares
Change 		Change in
Stake
HCI
1
Harraden Circle Investments
New York
$25M +$1.45M +139,800 +6%
FBCM
2
Fort Baker Capital Management
California
$16.1M +$8M +773,684 +97%
AIMCA
3
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$15.4M – – –
LA
4
Linden Advisors
New York
$15.4M – – –
MF
5
Magnetar Financial
Illinois
$15.4M – – –
MCM
6
Moore Capital Management
New York
$12.3M – – –
GL
7
Governors Lane
New York
$11.5M – – –
Toronto Dominion Bank
8
Toronto Dominion Bank
Ontario, Canada
$9.33M -$885K -85,544 -9%
SCM
9
Saba Capital Management
New York
$8.26M -$2.6M -250,992 -24%
LPC
10
Lineage Point Capital
Florida
$7.52M +$2.09M +202,407 +38%
MC
11
Meteora Capital
Florida
$7.16M -$243K -23,516 -3%
Two Sigma Investments
12
Two Sigma Investments
New York
$5.51M – – –
SC
13
Sculptor Capital
New York
$5.13M – – –
D.E. Shaw & Co
14
D.E. Shaw & Co
New York
$5.13M – – –
GCM
15
Ghisallo Capital Management
Massachusetts
$5.13M – – –
GCL
16
Glazer Capital LLC
New York
$3.9M +$293K +28,316 +8%
HI
17
HBK Investments
Texas
$3.69M – – –
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
18
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$3.59M -$1.03M -100,000 -22%
RCM
19
Radcliffe Capital Management
Pennsylvania
$3.47M +$637K +61,561 +22%
CC
20
Centiva Capital
New York
$3.46M – – –
PMAM
21
Picton Mahoney Asset Management
Ontario, Canada
$3.33M – – –
PC
22
Periscope Capital
Ontario, Canada
$3.32M +$2.07K +200 +0.1%
Millennium Management
23
Millennium Management
New York
$3.23M +$175K +16,929 +6%
KPF
24
K2 Principal Fund
Ontario, Canada
$3.05M – – –
AA
25
AQR Arbitrage
Connecticut
$2.9M -$192K -18,573 -6%
1
2 3

PMTR Hedge Fund Activity: Q1 2026 in Review

52 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Perimeter Acquisition Corp I (PMTR) for Q1 2026, worth a combined $225M — up 1.8% from $221M a quarter earlier.

Sellers outnumbered buyers: 8 funds closed out of PMTR and 7 opened new positions — a net loss of 1 holder — while 11 trimmed existing stakes and 10 added.

The largest buyer was Fort Baker Capital Management, adding an estimated $8M. The largest seller was Saba Capital Management, cutting an estimated $2.6M.

  • 52 institutional investors held Perimeter Acquisition Corp I (PMTR) as of Q1 2026, down from 53 in Q4 2025.
  • Funds reported $225M of Perimeter Acquisition Corp I stock for Q1 2026, up 1.8% quarter-over-quarter.
  • 7 funds opened new Perimeter Acquisition Corp I positions in Q1 2026 and 8 closed out, a net change of -1 holder.
  • The largest Perimeter Acquisition Corp I buyer in Q1 2026 was Fort Baker Capital Management, an estimated $8M added.
  • The largest Perimeter Acquisition Corp I seller in Q1 2026 was Saba Capital Management, an estimated $2.6M sold.

Based on aggregated 13F filings for Q1 2026.