Vault-13

PERIMETER ACQUISITION CORP I PMTR

COM CL A · Common Stock · CUSIP G7010A129

56 institutional holders +4 vs Q1 2026
22,120,79422.1m shares reported held*
$230.4mreported value*
5 new 9 added 12 reduced 1 sold out net bought ≈ $2.1m (+198.3k shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $10.42.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q2 25: 26Q3 25: 43Q4 25: 53Q1 26: 52Q2 26: 5656Q2 25Q3 25Q4 25Q1 26Q2 26
Numbers
QuarterHolders
Q2 202526
Q3 202543
Q4 202553
Q1 202652
Q2 202656

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
40040Q3 25: 22 bought or addedQ3 25: 7 cut or sold outQ3 25Q4 25: 19 bought or addedQ4 25: 15 cut or sold outQ4 25Q1 26: 17 bought or addedQ1 26: 19 cut or sold outQ1 26Q2 26: 14 bought or addedQ2 26: 13 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 2025227
Q4 20251915
Q1 20261719
Q2 20261413

Biggest buyers

Meteora Capital, LLC Added +207,217+207.2k
Radcliffe Capital Management, L.P. Added +182,991+183.0k
Verition Fund Management LLC New +159,004+159.0k
BOOTHBAY FUND MANAGEMENT, LLC New +105,347+105.3k
Centiva Capital, LP Added +71,442+71.4k
Shay Capital LLC New +49,800+49.8k
StoneX Group Inc. Added +30,273+30.3k
Parallax Volatility Advisers, L.P. New +25,000+25.0k
Schonfeld Strategic Advisors LLC Added +20,385+20.4k
Periscope Capital Inc. Added +4,733+4.7k

Biggest sellers

TORONTO DOMINION BANK Reduced -309,356-309.4k
Saba Capital Management, L.P. Reduced -154,938-154.9k
JPMORGAN CHASE & CO Reduced -53,426-53.4k
Lineage Point Capital LP Reduced -33,364-33.4k
CSS LLC/IL Reduced -28,444-28.4k
Shaolin Capital Management LLC Reduced -25,265-25.3k
Virtu Financial LLC Reduced -24,902-24.9k
CITIGROUP INC Reduced -21,946-21.9k
PenderFund Capital Management Ltd. Sold out -8,000-8.0k
Clear Street Group Inc. Reduced -4,600-4.6k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Harraden Circle Investments, LLC 13G · institution +0.6 pts · filed 2026-08-14 9.8% +0.6 pts 2.4m≈ $25.4m 2026-08-14
Fort Baker Capital Management LP 13G · institution new · filed 2026-05-15 6.3% new 1.6m≈ $16.4m 2026-05-15
Alberta Investment Management Corp 13G · passive investor new · filed 2025-05-19 6.1% new 1.5m 2025-05-19
Magnetar Financial LLC 13G · institution new · filed 2025-08-08 6.0% new 1.5m≈ $15.6m 2025-08-08

Fell to 5% or below in the last year: HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND (1.8%, 2026-02-13)

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Harraden Circle Investments, LLC 3.24% of their portfolio NEW YORK, NY 2,440,2982.4m $25.4m $25.4m 3.24% Unchanged
2 Fort Baker Capital Management LP 1.30% of their portfolio Larkspur, CA 1,573,6841.6m $16.4m $16.4m 1.30% Unchanged
3 Linden Advisors LP 0.08% of their portfolio New York, NY 1,500,0001.5m $15.6m $15.6m 0.08% Unchanged
4 Magnetar Financial LLC 0.14% of their portfolio EVANSTON, IL 1,500,0001.5m $15.6m $15.6m 0.14% Unchanged
5 Alberta Investment Management Corp 0.09% of their portfolio EDMONTON, A0 1,500,0001.5m $15.6m $15.6m 0.09% Unchanged
6 MOORE CAPITAL MANAGEMENT, LP 0.28% of their portfolio NEW YORK, NY 1,200,0001.2m $12.5m $12.5m 0.28% Unchanged
7 Governors Lane LP 1.17% of their portfolio NEW YORK, NY 1,116,9001.1m $11.6m $11.6m 1.17% Unchanged
8 Meteora Capital, LLC 0.78% of their portfolio Boca Raton, FL 905,419905.4k $9.4m $9.4m 0.78% Added +207.2k +207,217
9 Lineage Point Capital LP 1.50% of their portfolio PALM BEACH, FL 700,000700.0k $7.3m $7.3m 1.50% Reduced -33.4k -33,364
10 Saba Capital Management, L.P. 0.21% of their portfolio NEW YORK, NY 649,940649.9k $6.8m $6.8m 0.21% Reduced -154.9k -154,938
11 TORONTO DOMINION BANK 0.01% of their portfolio TORONTO, ONTARIO, A6 600,100600.1k $6.3m $6.3m 0.01% Reduced -309.4k -309,356
12 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 537,309537.3k $5.6m $5.6m 0.00% Unchanged
13 Radcliffe Capital Management, L.P. 0.41% of their portfolio BALA CYNWYD, PA 521,525521.5k $5.4m $5.4m 0.41% Added +183.0k +182,991
14 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 500,000500.0k $5.2m $5.2m 0.00% Unchanged
15 Sculptor Capital LP 0.05% of their portfolio New York, NY 500,000500.0k $5.2m $5.2m 0.05% Unchanged
16 Ghisallo Capital Management LLC 0.10% of their portfolio BOSTON, MA 500,000500.0k $5.2m $5.2m 0.10% Unchanged
17 Centiva Capital, LP 0.14% of their portfolio New York, NY 409,442409.4k $4.3m $4.3m 0.14% Added +71.4k +71,442
18 GLAZER CAPITAL, LLC 0.10% of their portfolio New York, NY 379,931379.9k $4.0m $4.0m 0.10% Unchanged
19 HBK INVESTMENTS L P 0.04% of their portfolio DALLAS, TX 360,000360.0k $3.8m $3.8m 0.04% Unchanged
20 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 350,000350.0k $3.6m $3.6m 0.01% Unchanged
21 Periscope Capital Inc. 0.54% of their portfolio Toronto, A6 327,836327.8k $3.4m $3.4m 0.54% Added +4.7k +4,733
22 PICTON MAHONEY ASSET MANAGEMENT 0.03% of their portfolio Toronto, A6 325,000325.0k $3.4m $3.4m 0.03% Unchanged
23 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 314,650314.6k $3.3m $3.3m 0.00% Unchanged
24 K2 PRINCIPAL FUND, L.P. 0.28% of their portfolio TORONTO, A6 297,237297.2k $3.1m $3.1m 0.28% Unchanged
25 AQR Arbitrage LLC 0.04% of their portfolio Greenwich, CT 285,795285.8k $3.0m $3.0m 0.04% Added +2.7k +2,676
26 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio HARRISBURG, PA 252,751252.8k $2.6m $2.6m 0.01% Unchanged
27 Context Capital Management, LLC 0.05% of their portfolio LAJOLLA, CA 250,000250.0k $2.6m $2.6m 0.05% Unchanged
28 Shaolin Capital Management LLC 0.13% of their portfolio Miami, FL 224,991225.0k $2.3m $2.3m 0.13% Reduced -25.3k -25,265
29 DLD Asset Management, LP 0.17% of their portfolio NEW YORK, NY 199,351199.4k $2.1m $2.1m 0.17% Unchanged
30 Schonfeld Strategic Advisors LLC 0.01% of their portfolio NEW YORK, NY 160,385160.4k $1.7m $1.7m 0.01% Added +20.4k +20,385
31 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 160,000160.0k $1.7m $1.7m 0.00% Reduced -21.9k -21,946
32 Verition Fund Management LLC 0.01% of their portfolio GREENWICH, CT 159,004159.0k $1.7m $1.7m 0.01% New
33 ARISTEIA CAPITAL, L.L.C. 0.02% of their portfolio GREENWICH, CT 150,000150.0k $1.6m $1.6m 0.02% Unchanged
34 Westchester Capital Management, LLC 0.08% of their portfolio VALHALLA, NY 150,000150.0k $1.6m $1.6m 0.08% Unchanged
35 BERKLEY W R CORP 0.08% of their portfolio Greenwich, CT 148,830148.8k $1.5m $1.5m 0.08% Unchanged
36 READYSTATE ASSET MANAGEMENT LP 0.06% of their portfolio CHICAGO, IL 139,414139.4k $1.5m $1.5m 0.06% Added +2.9k +2,888
37 BOOTHBAY FUND MANAGEMENT, LLC 0.02% of their portfolio NEW YORK, NY 105,347105.3k $1.1m $1.1m 0.02% New
38 TENOR CAPITAL MANAGEMENT Co., L.P. 0.01% of their portfolio NEW YORK, NY 100,000100.0k $1.0m $1.0m 0.01% Unchanged
39 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 98,30498.3k $1.0m $1.0m 0.00% Unchanged
40 SONA ASSET MANAGEMENT (US) LLC 0.03% of their portfolio NEW YORK, NY 82,99183.0k $864.8k $864.8k 0.03% Unchanged
41 StoneX Group Inc. 0.03% of their portfolio NEW YORK, NY 79,59479.6k $821.8k $821.8k 0.03% Added +30.3k +30,273
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 76,56676.6k $796.3k $796.3k 0.00% Reduced -53.4k -53,426
43 HEIGHTS CAPITAL MANAGEMENT, INC 0.14% of their portfolio SAN FRANCISCO, CA 58,92558.9k $613.4k $613.4k 0.14% Unchanged
44 Shay Capital LLC 0.06% of their portfolio NEW YORK, NY 49,80049.8k $518.4k $518.4k 0.06% New
45 Walleye Capital LLC 0.00% of their portfolio NEW YORK, NY 34,88234.9k $363.1k $363.1k 0.00% Unchanged
46 Parallax Volatility Advisers, L.P. 0.01% of their portfolio San Francisco, CA 25,00025.0k $260.2k $260.2k 0.01% New
47 SIH Partners, LLLP 0.01% of their portfolio Wilmington, DE 23,02823.0k $239.7k $239.7k 0.01% Reduced -4.1k -4,117
48 CSS LLC/IL 0.01% of their portfolio CHICAGO, IL 19,79119.8k $206.2k $206.2k 0.01% Reduced -28.4k -28,444
49 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 19,34119.3k $201.5k $201.5k 0.00% Reduced -4.6k -4,600
50 FNY Investment Advisers, LLC 0.06% of their portfolio NEW YORK, NY 15,11015.1k $157.0k $157.0k 0.06% Unchanged
51 Virtu Financial LLC 0.00% of their portfolio New York, NY 14,48514.5k $151.0k $151.0k 0.00% Reduced -24.9k -24,902
52 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 13,79213.8k $143.6k $143.6k 0.00% Added +2.9k +2,852
53 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 11,32011.3k $117.8k $117.8k 0.00% Unchanged
54 Rangeley Capital, LLC 0.02% of their portfolio NEW CANAAN, CT 2,5022.5k $26.1k $26.1k 0.02% New
55 UBS Group AG 0.00% of their portfolio ZURICH, V8 177177 $1.8k $1.8k 0.00% Reduced -423 -423
56 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 4747 $490 $490 0.00% Reduced -22 -22