20 institutions reported holding $1.5M of BLACK HAWK ACQUISITION CORP (BKHAR) in SEC 13F filings for 2026-06-30. Largest institutional holders: Harraden Circle Investments, LLC ($383,491), HIGHBRIDGE CAPITAL MANAGEMENT LLC ($337,637), AQR Arbitrage LLC ($132,458), RIVERNORTH CAPITAL MANAGEMENT, LLC ($91,346), Clear Street Group Inc. ($83,622). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Harraden Circle Investments, LLC | $383,491 | 249,020 | Hold |
| 2 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | $337,637 | 228,133 | Added |
| 3 | AQR Arbitrage LLC | $132,458 | 86,012 | Hold |
| 4 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $91,346 | 62,997 | Hold |
| 5 | Clear Street Group Inc. | $83,622 | 54,300 | Added |
| 6 | Shaolin Capital Management LLC | $81,683 | 53,041 | Added |
| 7 | BOOTHBAY FUND MANAGEMENT, LLC | $54,478 | 35,375 | Hold |
| 8 | WHITEBOX ADVISORS LLC | $38,500 | 25,000 | Hold |
| 9 | Polar Asset Management Partners Inc. | $30,800 | 20,000 | Hold |
| 10 | TORONTO DOMINION BANK | $30,800 | 20,000 | Trimmed |
| 11 | Periscope Capital Inc. | $30,338 | 19,700 | Hold |
| 12 | Centiva Capital, LP | $29,945 | 19,445 | Hold |
| 13 | Yakira Capital Management, Inc. | $27,333 | 17,749 | Hold |
| 14 | WOLVERINE ASSET MANAGEMENT LLC | $24,646 | 16,004 | Trimmed |
| 15 | D. E. Shaw & Co., Inc. | $23,100 | 15,000 | Hold |
| 16 | Shay Capital LLC | $20,025 | 11,378 | New |
| 17 | HGC Investment Management Inc. | $15,400 | 10,000 | Hold |
| 18 | Westchester Capital Management, LLC | $15,281 | 9,923 | Hold |
| 19 | LONGFELLOW INVESTMENT MANAGEMENT CO LLC | $2,327 | 1,511 | Hold |
| 20 | UBS Group AG | $208 | 135 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30