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 2026-08-06, as of 2026-08-03)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | BKSY · NYSE | 40,924,846 | 30,106,736 | 73.6% | 227 | 09263B207 |
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 (16 of 16 · 09263B116)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | LMR Partners LLP | 1,353,603 | — | $68K | — |
| 2 | WOLVERINE ASSET MANAGEMENT LLC | 494,072 | — | $25K | +427,217 (+639.0%) |
| 3 | Blue Owl Capital Holdings LP | 350,000 | — | $18K | — |
| 4 | BOUSSARD & GAVAUDAN GESTION SAS | 237,226 | — | $14K | NEW |
| 5 | TENOR CAPITAL MANAGEMENT Co., L.P. | 198,855 | — | $10K | — |
| 6 | Polar Asset Management Partners Inc. | 175,000 | — | $8K | — |
| 7 | BlueCrest Capital Management Ltd | 175,000 | — | $9K | — |
| 8 | JPMORGAN CHASE & CO | 169,334 | — | $9K | — |
| 9 | VR Advisory Services Ltd | 130,600 | — | $7K | — |
| 10 | ARISTEIA CAPITAL, L.L.C. | 100,000 | — | $5K | — |
| 11 | Virtu Financial LLC | 69,689 | — | $3K | +12,285 (+21.4%) |
| 12 | TORONTO DOMINION BANK | 49,065 | — | $2K | +100 (+0.2%) |
| 13 | Intellectus Partners, LLC | 35,994 | — | $0 | — |
| 14 | Lombard Odier Asset Management (Europe) Ltd | 25,000 | — | $1K | NEW |
| 15 | Clear Street Group Inc. | 20,190 | — | $1K | +90 (+0.4%) |
| 16 | UBS Group AG | 7,192 | — | $360 | NEW |
Exited since 2026-03-31 (1 filers; largest 1 shown)
| Boussard & Gavaudan Investment Management LLP | −237,226 |
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 |
|---|---|---|---|---|---|
| Mithril II LP | SCHEDULE 13D/A | 2026-08-20 | 2026-06-05 | 0 | 0% |
| Mithril LP | SCHEDULE 13D/A | 2026-08-20 | 2026-06-05 | 0 | 0% |
| Bank of New York Mellon Corp | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 657,613 | 1.8% |
| BNY Mellon IHC, LLC | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 599,728 | 1.6% |
| MBC Investments Corp | SCHEDULE 13G/A | 2026-07-29 | 2026-06-30 | 599,728 | 1.6% |
| Newton Investment Management North America, LLC | SCHEDULE 13G/A | 2026-04-28 | 2026-03-31 | 1,827,603 | 4.9% |
| The Vanguard Group | SCHEDULE 13G/A | 2026-03-26 | 2026-03-13 | 0 | 0% |
| AWM Investment Company, Inc. | SCHEDULE 13G/A | 2026-02-13 | 2025-12-31 | 1,725,610 | 4.8% |
| BlackRock, Inc. | SCHEDULE 13G/A | 2025-10-17 | 2025-09-30 | 2,287,439 | 6.5% |
| Mithril II GP LP | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,030,175 | 2.9% |
| Mithril II UGP LLC | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,030,175 | 2.9% |
| Ajay Royan | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 2,328,503 | 6.6% |
| Mithril GP LP | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 1,298,328 | 3.7% |
| Peter Thiel | SCHEDULE 13D/A | 2025-08-11 | 2025-08-07 | 2,328,503 | 6.6% |
| Nantahala Capital Management, LLC | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Daniel Mack | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Wilmot B. Harkey | SCHEDULE 13G/A | 2025-02-14 | 2024-12-31 | 1,377,060 | 4.47% |
| Walleye Capital LLC | SCHEDULE 13G/A | 2025-01-24 | 2024-09-30 | 230,572.5 | 0.8% |
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.