Perimeter Acquisition Corp. I
PMTR- Exchange
- Nasdaq
- Industry
- Blank Checks
- SEC CIK
- 0002061473
No open-market purchases or sales by Perimeter Acquisition Corp. I insiders were filed in the last 90 days; 56 institutions reported holding it in 13F filings for Q2 2026, worth $230.4M in total; no superinvestor holds it.
Q1 2026 vs. Q4 2025
How the institutions holding Perimeter Acquisition Corp. I changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Q1 2026 | Change |
|---|---|---|---|
| Holders | 53 | 52 | −1 |
| Shares | 21.5M | 21.9M | +425.7K (+2.0%) |
| Value | $221.0M | $224.8M | +$3.87M (+1.8%) |
New holders (7)
Institutions that held Perimeter Acquisition Corp. I at the end of Q1 2026 but not at the end of Q4 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Westchester Capital Management, LLC | 150,000 | $1.54M | 0.07% |
| Sona Asset Management (US) LLC | 82,991 | $851.5K | 0.03% |
| StoneX Group Inc. | 49,321 | $506.0K | 0.03% |
| Virtu Financial LLC | 39,387 | $404.0K | 0.02% |
| BNP Paribas Arbitrage, SA | 11,320 | $116.0K | 0.00% |
| Citadel Advisors LLC | 10,940 | $112.1K | 0.00% |
| UBS Group AG | 600 | $6.16K | 0.00% |
Sold out (8)
Institutions that held Perimeter Acquisition Corp. I at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| HGC Investment Management Inc. | 238,400 | $2.45M |
| Fifth Lane Capital, LP | 125,000 | $1.28M |
| Mizuho Securities USA LLC | 99,465 | $1.01M |
| Wealthspring Capital LLC | 97,900 | $1.01M |
| Alpine Global Management, LLC | 84,057 | $864.1K |
| Marex Group plc | 13,800 | $141.9K |
| Rangeley Capital, LLC | 10,000 | $102.8K |
| BlueCrest Capital Management Ltd | 10,000 | $102.8K |