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 20-F filed 2026-04-27, as of 2025-12-31)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common Class A | not listed | 24,871,433 | — | — | ||
| Common Class B | ABLV · NASDAQ | 24,518,489 | 73,401 | 0.3% | 3 | G1149B108 |
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 (12 of 12 · G1149B116)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | TORONTO DOMINION BANK | 607,455 | — | $10K | — |
| 2 | Polar Asset Management Partners Inc. | 600,000 | — | $11K | — |
| 3 | Harraden Circle Investments, LLC | 521,828 | — | $9K | — |
| 4 | Clear Street Group Inc. | 471,409 | — | $8K | — |
| 5 | WOLVERINE ASSET MANAGEMENT LLC | 275,845 | — | $5K | — |
| 6 | RIVERNORTH CAPITAL MANAGEMENT, LLC | 250,000 | — | $5K | — |
| 7 | CITADEL ADVISORS LLC | 212,757 | — | $3K | -3,661 (-1.7%) |
| 8 | D. E. Shaw & Co., Inc. | 200,000 | — | $3K | — |
| 9 | Periscope Capital Inc. | 124,900 | — | $2K | — |
| 10 | UBS Group AG | 54,641 | — | $874 | -2 (-0.0%) |
| 11 | BOOTHBAY FUND MANAGEMENT, LLC | 37,000 | — | $41K | — |
| 12 | StoneX Group Inc. | 13,534 | — | $247 | NEW |
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 |
|---|---|---|---|---|---|
| Alta Partners LLC | SCHEDULE 13G | 2025-12-04 | 2025-12-01 | 2,019,868 | 7.6% |
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.