21 institutions reported holding $1.3M of BLACK HAWK ACQUISITION CORP (BKHAR) in SEC 13F filings for 2026-03-31. Largest institutional holders: Harraden Circle Investments, LLC ($336,177), HIGHBRIDGE CAPITAL MANAGEMENT LLC ($192,434), TORONTO DOMINION BANK ($185,347), AQR Arbitrage LLC ($116,116), RIVERNORTH CAPITAL MANAGEMENT, LLC ($85,046). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Harraden Circle Investments, LLC | $336,177 | 249,020 | Hold |
| 2 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | $192,434 | 142,544 | Hold |
| 3 | TORONTO DOMINION BANK | $185,347 | 137,294 | Trimmed |
| 4 | AQR Arbitrage LLC | $116,116 | 86,012 | Trimmed |
| 5 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $85,046 | 62,997 | Hold |
| 6 | Shaolin Capital Management LLC | $71,099 | 52,666 | Hold |
| 7 | Clear Street Group Inc. | $59,798 | 44,295 | Hold |
| 8 | BOOTHBAY FUND MANAGEMENT, LLC | $47,756 | 35,375 | Hold |
| 9 | WHITEBOX ADVISORS LLC | $33,750 | 25,000 | Hold |
| 10 | Polar Asset Management Partners Inc. | $27,000 | 20,000 | Hold |
| 11 | WOLVERINE ASSET MANAGEMENT LLC | $26,596 | 19,701 | Hold |
| 12 | Periscope Capital Inc. | $26,595 | 19,700 | Hold |
| 13 | Centiva Capital, LP | $26,251 | 19,445 | Hold |
| 14 | Yakira Capital Management, Inc. | $23,961 | 17,749 | Trimmed |
| 15 | D. E. Shaw & Co., Inc. | $20,250 | 15,000 | Hold |
| 16 | HGC Investment Management Inc. | $13,500 | 10,000 | Hold |
| 17 | Westchester Capital Management, LLC | $12,900 | 9,923 | Hold |
| 18 | UBS Group AG | $4,221 | 3,247 | Added |
| 19 | LONGFELLOW INVESTMENT MANAGEMENT CO LLC | $2,040 | 1,511 | Hold |
| 20 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 21 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31