Pioneer Acquisition I Corp
Ownership
Ownership Structure
Who owns Pioneer Acquisition I Corp (PACH)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 100.0% of the shares are freely tradable; institutional investors hold 109.9%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Westchester Capital Management LLC | 3.98 | 1,258,612 | +208.0 | 03/31/2026 |
| D. E. Shaw & Co LP | 3.96 | 1,252,350 | +0.0 | 06/30/2026 |
| Glazer Capital, LLC | 3.83 | 1,210,643 | +0.0 | 06/30/2026 |
| Linden Advisors LLC | 3.16 | 1,000,000 | +0.0 | 06/30/2026 |
| Magnetar Financial LLC | 3.16 | 1,000,000 | +0.0 | 06/30/2026 |
| Cnh Partners, LLC | 3.00 | 948,381 | -3.7 | 03/31/2026 |
| Two Sigma Investments LLC | 2.52 | 797,500 | +0.0 | 06/30/2026 |
| Wealthspring Capital LLC | 2.45 | 776,258 | -7.8 | 06/30/2026 |
| Mmcap International Inc. Spc | 2.37 | 750,000 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| The Merger Fund A | 3.14 | 993,533 | +0.0 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 28, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.