# PERIMETER ACQUISITION CORP I (PMTRW)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/PMTRW/

- Reporting holders: 39
- Reported value: $9.8M
- Held through calls: 2.7%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [Harraden Circle Investments, LLC](https://holderbook.com/funds/1910592-harraden-circle-investments-llc/) | $1.0M | 1,161,751 | 0.1% | 5 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $786.2K | 850,000 | 0.0% | 5 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $712.4K | 750,000 | 0.0% | 5 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $712.4K | 750,000 | 0.0% | 5 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $675.0K | 750,000 | 0.0% | 5 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $553.5K | 615,000 | 0.0% | 5 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $540.0K | 600,000 | 0.0% | 4 |
| [Lineage Point Capital LP](https://holderbook.com/funds/2093311-lineage-point-capital-lp/) | $516.2K | 573,611 | 0.1% | 3 |
| [Saba Capital Management, L.P.](https://holderbook.com/funds/1510281-saba-capital-management-l-p/) | $512.4K | 554,045 | 0.0% | 5 |
| [Walleye Capital LLC](https://holderbook.com/funds/1758720-walleye-capital-llc/) | $438.2K | 486,889 | 0.0% | 5 |
| [HBK INVESTMENTS L P](https://holderbook.com/funds/1011443-hbk-investments-l-p/) | $360.0K | 400,000 | 0.0% | 4 |
| [Governors Lane LP](https://holderbook.com/funds/1644187-governors-lane-lp/) | $336.3K | 373,679 | 0.0% | 5 |
| [Fort Baker Capital Management LP](https://holderbook.com/funds/1688382-fort-baker-capital-management-lp/) | $239.5K | 266,149 | 0.0% | 5 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $237.4K | 250,000 | 0.0% | 5 |
| [Shaolin Capital Management LLC](https://holderbook.com/funds/1766806-shaolin-capital-management-llc/) | $233.3K | 259,231 | 0.0% | 5 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $217.4K | 0 | 0.0% | 5 |
| [Centiva Capital, LP](https://holderbook.com/funds/1692507-centiva-capital-lp/) | $190.1K | 200,197 | 0.0% | 1 |
| [HGC Investment Management Inc.](https://holderbook.com/funds/1711200-hgc-investment-management-inc/) | $174.8K | 194,200 | 0.0% | 3 |
| [PICTON MAHONEY ASSET MANAGEMENT](https://holderbook.com/funds/1539041-picton-mahoney-asset-management/) | $154.3K | 162,500 | 0.0% | 4 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $148.6K | 165,100 | 0.0% | 5 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $121.1K | 148,557 | 0.0% | 4 |
| [DLD Asset Management, LP](https://holderbook.com/funds/1578299-dld-asset-management-lp/) | $119.5K | 132,764 | 0.0% | 4 |
| [BOOTHBAY FUND MANAGEMENT, LLC](https://holderbook.com/funds/1549230-boothbay-fund-management-llc/) | $117.5K | 11,276 | 0.0% | 2 |
| [K2 PRINCIPAL FUND, L.P.](https://holderbook.com/funds/1461790-k2-principal-fund-l-p/) | $105.1K | 116,818 | 0.0% | 5 |
| [Hudson Bay Capital Management LP](https://holderbook.com/funds/1393825-hudson-bay-capital-management-lp/) | $95.0K | 100,000 | 0.0% | 4 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 39 | $9.8M |
| Q1 2026 | 36 | $7.1M |
| Q4 2025 | 37 | $7.7M |
| Q3 2025 | 40 | $6.5M |
| Q2 2025 | 24 | $5.5M |