Who Owns PIONEER ACQUISITION I CORP (PACHU)? -- Institutional Holders (2026-03-31)
76 institutions reported holding $253.3M of PIONEER ACQUISITION I CORP (PACHU) in SEC 13F filings for 2026-03-31. Largest institutional holders: Westchester Capital Management, LLC ($12.9M), D. E. Shaw & Co., Inc. ($12.7M), GLAZER CAPITAL, LLC ($12.3M), Magnetar Financial LLC ($10.3M), Linden Advisors LP ($10.2M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Westchester Capital Management, LLC | $12.9M | 1.7M | Added |
| 2 | D. E. Shaw & Co., Inc. | $12.7M | 1.3M | Hold |
| 3 | GLAZER CAPITAL, LLC | $12.3M | 1.4M | Added |
| 4 | Magnetar Financial LLC | $10.3M | 1.5M | Hold |
| 5 | Linden Advisors LP | $10.2M | 1.4M | Hold |
| 6 | AQR Arbitrage LLC | $9.7M | 1.4M | Trimmed |
| 7 | Wealthspring Capital LLC | $8.6M | 1.3M | Trimmed |
| 8 | TWO SIGMA INVESTMENTS, LP | $8.1M | 797,500 | Hold |
| 9 | LMR Partners LLP | $7.7M | 750,000 | Hold |
| 10 | MMCAP International Inc. SPC | $7.7M | 1.1M | Hold |
| 11 | HGC Investment Management Inc. | $7.7M | 743,077 | Hold |
| 12 | WOLVERINE ASSET MANAGEMENT LLC | $7.2M | 803,474 | Added |
| 13 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $6.7M | 975,000 | Hold |
| 14 | Radcliffe Capital Management, L.P. | $6.4M | 879,247 | Hold |
| 15 | TENOR CAPITAL MANAGEMENT Co., L.P. | $6.1M | 900,000 | Hold |
| 16 | Mint Tower Capital Management B.V. | $6.1M | 600,000 | Hold |
| 17 | TORONTO DOMINION BANK | $5.5M | 942,466 | Added |
| 18 | Verition Fund Management LLC | $5.4M | 877,276 | Trimmed |
| 19 | Shaolin Capital Management LLC | $5.2M | 1.1M | Trimmed |
| 20 | Jain Global LLC | $5.1M | 749,979 | Trimmed |
| 21 | Alberta Investment Management Corp | $5.1M | 750,000 | Hold |
| 22 | PICTON MAHONEY ASSET MANAGEMENT | $5.1M | 750,000 | Hold |
| 23 | Karpus Management, Inc. | $5.1M | 501,988 | Added |
| 24 | First Trust Capital Management L.P. | $5.1M | 500,000 | Hold |
| 25 | MANGROVE PARTNERS IM, LLC | $4.6M | 450,000 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31