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PMTR

Perimeter Acquisition Corp I
PMTR

53 hedge funds and large institutions have $221M invested in Perimeter Acquisition Corp I in 2025 Q4 according to their latest regulatory filings, with 12 funds opening new positions, 9 increasing their positions, 14 reducing their positions, and 2 closing their positions.

New
Increased
Maintained
Reduced
Closed

500% more first-time investments, than exits

New positions opened: 12 | Existing positions closed: 2

100% more funds holding in top 10

Funds holding in top 10: 1 → 2 (+1)

23% more funds holding

Funds holding: 43 → 53 (+10)

0% less capital invested

Capital invested by funds: $222M → $221M (-$1.04M)

1.1% less ownership

Funds ownership: 87.82% → 86.72% (-1.1%)

36% less repeat investments, than reductions

Existing positions increased: 9 | Existing positions reduced: 14

Holders
53
Holders Change
+10
Holders Change %
+23.26%
% of All Funds
0.64%
Holding in Top 10
2
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+100%
% of All Funds
0.02%
New
12
Increased
9
Reduced
14
Closed
2
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
HCI
Harraden Circle Investments
New York
+$4.13M
2
HIM
HGC Investment Management
Ontario, Canada
+$2.46M
3
FLC
Fifth Lane Capital
Texas
+$1.29M
4
RAM
Readystate Asset Management
Illinois
+$969K
5
CC
Centiva Capital
New York
+$908K

Top Sellers

Rank Fund Capital Flow
1
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$8.25M
2
MC
Meteora Capital
Florida
-$4.96M
3
Toronto Dominion Bank
Toronto Dominion Bank
Ontario, Canada
-$2.18M
4
SC
Sculptor Capital
New York
-$1.65M
5
SCM
Shaolin Capital Management
Florida
-$1.16M
Name Holding Trade Value Shares
Change 		Change in
Stake
HCI
1
Harraden Circle Investments
New York
$23.6M +$4.13M +400,500 +21%
AIMCA
2
Alberta Investment Management Corp (AIMCo)
Alberta, Canada
$15.4M – – –
LA
3
Linden Advisors
New York
$15.4M – – –
MF
4
Magnetar Financial
Illinois
$15.4M – – –
MCM
5
Moore Capital Management
New York
$12.3M – – –
GL
6
Governors Lane
New York
$11.5M -$517K -50,100 -4%
SCM
7
Saba Capital Management
New York
$10.9M – – –
Toronto Dominion Bank
8
Toronto Dominion Bank
Ontario, Canada
$10.2M -$2.18M -211,314 -18%
FBCM
9
Fort Baker Capital Management
California
$8.22M – – –
MC
10
Meteora Capital
Florida
$7.42M -$4.96M -480,901 -40%
Two Sigma Investments
11
Two Sigma Investments
New York
$5.52M – – –
LPC
12
Lineage Point Capital
Florida
$5.46M +$5.48M +530,957 New
SC
13
Sculptor Capital
New York
$5.14M -$1.65M -160,249 -24%
D.E. Shaw & Co
14
D.E. Shaw & Co
New York
$5.14M – – –
GCM
15
Ghisallo Capital Management
Massachusetts
$5.14M – – –
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
16
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
$4.63M -$8.25M -800,000 -64%
HI
17
HBK Investments
Texas
$3.7M -$413K -40,000 -10%
GCL
18
Glazer Capital LLC
New York
$3.62M -$243K -23,572 -6%
CC
19
Centiva Capital
New York
$3.47M +$908K +88,000 +35%
PMAM
20
Picton Mahoney Asset Management
Ontario, Canada
$3.34M – – –
PC
21
Periscope Capital
Ontario, Canada
$3.32M -$434K -42,097 -12%
AA
22
AQR Arbitrage
Connecticut
$3.1M – – –
Millennium Management
23
Millennium Management
New York
$3.06M -$2.88K -279 -0.1%
KPF
24
K2 Principal Fund
Ontario, Canada
$3.06M +$516K +50,000 +20%
RCM
25
Radcliffe Capital Management
Pennsylvania
$2.85M +$763K +73,916 +36%
1
2 3

PMTR Hedge Fund Activity: Q4 2025 in Review

53 of the 8,256 institutional investors tracked by Wall St. Rank reported a position in Perimeter Acquisition Corp I (PMTR) for Q4 2025, worth a combined $221M — down 0.47% from $222M a quarter earlier.

Buyers outnumbered sellers: 12 funds opened new PMTR positions and 2 closed out — a net gain of 10 holders — while 9 added to existing stakes and 14 trimmed.

The largest buyer was Harraden Circle Investments, adding an estimated $4.13M. The largest seller was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, cutting an estimated $8.25M.

  • 53 institutional investors held Perimeter Acquisition Corp I (PMTR) as of Q4 2025, up from 43 in Q3 2025.
  • Funds reported $221M of Perimeter Acquisition Corp I stock for Q4 2025, down 0.47% quarter-over-quarter.
  • 12 funds opened new Perimeter Acquisition Corp I positions in Q4 2025 and 2 closed out, a net change of +10 holders.
  • The largest Perimeter Acquisition Corp I buyer in Q4 2025 was Harraden Circle Investments, an estimated $4.13M added.
  • The largest Perimeter Acquisition Corp I seller in Q4 2025 was Healthcare of Ontario Pension Plan (HOOPP) Trust Fund, an estimated $8.25M sold.

Based on aggregated 13F filings for Q4 2025.