Institutional HoldersBeta
Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.
Share classes (cover page of the 10-Q filed 2026-07-15, as of 2026-07-15)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | BKHA · NASDAQ | 4,153,577 | 2,325,394 | 56.0% | 23 | G1148A101 |
Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.
Top holders (21 of 21 · G1148A119)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | Harraden Circle Investments, LLC | 249,020 | — | $383K | — |
| 2 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | 228,133 | — | $338K | +85,589 (+60.0%) |
| 3 | AQR Arbitrage LLC | 86,012 | — | $132K | — |
| 4 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 62,997 | — | $91K | — |
| 5 | Clear Street Group Inc. | 54,300 | — | $84K | +10,005 (+22.6%) |
| 6 | Shaolin Capital Management LLC | 53,041 | — | $82K | +375 (+0.7%) |
| 7 | BOOTHBAY FUND MANAGEMENT, LLC | 35,375 | — | $54K | — |
| 8 | WHITEBOX ADVISORS LLC | 25,000 | — | $39K | — |
| 9 | TORONTO DOMINION BANK | 20,000 | — | $31K | -117,294 (-85.4%) |
| 10 | Polar Asset Management Partners Inc. | 20,000 | — | $31K | — |
| 11 | Periscope Capital Inc. | 19,700 | — | $30K | — |
| 12 | Centiva Capital, LP | 19,445 | — | $30K | — |
| 13 | Yakira Capital Management, Inc. | 17,749 | — | $27K | — |
| 14 | WOLVERINE ASSET MANAGEMENT LLC | 16,004 | — | $25K | -3,697 (-18.8%) |
| 15 | D. E. Shaw & Co., Inc. | 15,000 | — | $23K | — |
| 16 | Shay Capital LLC | 11,378 | — | $20K | NEW |
| 17 | HGC Investment Management Inc. | 10,000 | — | $15K | — |
| 18 | Westchester Capital Management, LLC | 9,923 | — | $15K | — |
| 19 | SkyView Investment Advisors, LLC | 2,000 | — | $3K | NEW |
| 20 | LONGFELLOW INVESTMENT MANAGEMENT CO LLC | 1,511 | — | $2K | — |
| 21 | UBS Group AG | 135 | — | $208 | -3,112 (-95.8%) |
Large holders from 13D/13G (latest per reporting person, last 2 years)
Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.
| Reporting person | Form | Filed | Event | Shares | % of class |
|---|---|---|---|---|---|
| FTCS Sub GP LLC | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 0 | 0% |
| First Trust Capital Management L.P. | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 0 | 0% |
| First Trust Capital Solutions L.P. | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 0 | 0% |
| First Trust Merger Arbitrage Fund | SCHEDULE 13G/A | 2025-11-14 | 2025-09-30 | 0 | 0% |
| Kerry Propper | SCHEDULE 13G/A | 2025-11-13 | 2025-09-30 | 240,999 | 5.8% |
| Antonio Ruiz-Gimenez | SCHEDULE 13G/A | 2025-11-13 | 2025-09-30 | 240,999 | 5.8% |
| AQR Arbitrage, LLC | SCHEDULE 13G/A | 2025-11-12 | 2025-09-30 | 139,365 | 3.36% |
| AQR Capital Management Holdings, LLC | SCHEDULE 13G/A | 2025-11-12 | 2025-09-30 | 139,365 | 3.36% |
| AQR Capital Management, LLC | SCHEDULE 13G/A | 2025-11-12 | 2025-09-30 | 139,365 | 3.36% |
| Berkley Insurance Company | SCHEDULE 13G/A | 2025-11-10 | 2025-09-30 | 308,584 | 7.4% |
| W. R. Berkley Corporation | SCHEDULE 13G/A | 2025-11-10 | 2025-09-30 | 308,584 | 7.4% |
| Christopher L. Gust | SCHEDULE 13G | 2025-10-10 | 2025-09-30 | 358,888 | 8.64% |
| WOLVERINE ASSET MANAGEMENT LLC | SCHEDULE 13G | 2025-10-10 | 2025-09-30 | 358,888 | 8.64% |
| Robert R. Bellick | SCHEDULE 13G | 2025-10-10 | 2025-09-30 | 358,888 | 8.64% |
| Wolverine Trading Partners, Inc. | SCHEDULE 13G | 2025-10-10 | 2025-09-30 | 358,888 | 8.64% |
| Wolverine Holdings, L.P. | SCHEDULE 13G | 2025-10-10 | 2025-09-30 | 358,888 | 8.64% |
| Mizuho Financial Group, Inc. | SCHEDULE 13G/A | 2025-08-13 | 2025-06-30 | 750,000 | 8.4% |
| KARPUS MANAGEMENT, INC. | SCHEDULE 13G/A | 2025-08-07 | 2025-07-31 | 0 | 0% |
| TORONTO DOMINION HOLDINGS USA INC | SCHEDULE 13G/A | 2025-05-12 | 2025-03-31 | 0 | 0% |
| Toronto Dominion Bank | SCHEDULE 13G/A | 2025-05-12 | 2025-03-31 | 0 | 0% |
| TD SECURITIES (USA) LLC | SCHEDULE 13G/A | 2025-05-12 | 2025-03-31 | 282,130 | 3.2% |
| TD Group US Holdings LLC | SCHEDULE 13G/A | 2025-05-12 | 2025-03-31 | 0 | 0% |
Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.