# PERIMETER ACQUISITION CORP I (PMTR)

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

- Reporting holders: 56
- Reported value: $236.0M
- Held through calls: 0.0%
- 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/) | $25.4M | 2,440,298 | 3.2% | 5 |
| [Fort Baker Capital Management LP](https://holderbook.com/funds/1688382-fort-baker-capital-management-lp/) | $16.4M | 1,573,684 | 1.2% | 5 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $15.6M | 1,500,000 | 0.1% | 5 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $15.6M | 1,500,000 | 0.1% | 5 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $15.6M | 1,500,000 | 0.1% | 5 |
| [MOORE CAPITAL MANAGEMENT, LP](https://holderbook.com/funds/1448574-moore-capital-management-lp/) | $12.5M | 1,200,000 | 0.2% | 4 |
| [Governors Lane LP](https://holderbook.com/funds/1644187-governors-lane-lp/) | $11.6M | 1,116,900 | 1.0% | 5 |
| [Meteora Capital, LLC](https://holderbook.com/funds/1905106-meteora-capital-llc/) | $9.4M | 905,419 | 0.8% | 5 |
| [HBK INVESTMENTS L P](https://holderbook.com/funds/1011443-hbk-investments-l-p/) | $7.5M | 720,000 | 0.0% | 4 |
| [Lineage Point Capital LP](https://holderbook.com/funds/2093311-lineage-point-capital-lp/) | $7.3M | 700,000 | 1.5% | 3 |
| [Saba Capital Management, L.P.](https://holderbook.com/funds/1510281-saba-capital-management-l-p/) | $6.8M | 649,940 | 0.2% | 5 |
| [TORONTO DOMINION BANK](https://holderbook.com/funds/947263-toronto-dominion-bank/) | $6.3M | 600,100 | 0.0% | 4 |
| [TWO SIGMA INVESTMENTS, LP](https://holderbook.com/funds/1179392-two-sigma-investments-lp/) | $5.6M | 537,309 | 0.0% | 5 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $5.4M | 521,525 | 0.4% | 4 |
| [Sculptor Capital LP](https://holderbook.com/funds/1054587-sculptor-capital-lp/) | $5.2M | 500,000 | 0.0% | 5 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $5.2M | 500,000 | 0.0% | 5 |
| [Ghisallo Capital Management LLC](https://holderbook.com/funds/1825214-ghisallo-capital-management-llc/) | $5.2M | 500,000 | 0.1% | 4 |
| [Centiva Capital, LP](https://holderbook.com/funds/1692507-centiva-capital-lp/) | $4.3M | 409,442 | 0.0% | 4 |
| [GLAZER CAPITAL, LLC](https://holderbook.com/funds/1076809-glazer-capital-llc/) | $4.0M | 379,931 | 0.1% | 5 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $3.6M | 350,000 | 0.0% | 5 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $3.4M | 327,836 | 0.3% | 5 |
| [PICTON MAHONEY ASSET MANAGEMENT](https://holderbook.com/funds/1539041-picton-mahoney-asset-management/) | $3.4M | 325,000 | 0.0% | 4 |
| [Verition Fund Management LLC](https://holderbook.com/funds/1454027-verition-fund-management-llc/) | $3.3M | 318,008 | 0.0% | 1 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $3.3M | 314,650 | 0.0% | 4 |
| [K2 PRINCIPAL FUND, L.P.](https://holderbook.com/funds/1461790-k2-principal-fund-l-p/) | $3.1M | 297,237 | 0.2% | 5 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 56 | $236.0M |
| Q1 2026 | 52 | $224.8M |
| Q4 2025 | 53 | $221.0M |
| Q3 2025 | 43 | $222.7M |
| Q2 2025 | 25 | $170.9M |