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 (3 of 3 · G1149B108)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | 60,955 | 0.25% | $67K | NEW |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 10,224 | 0.04% | $11K | — |
| 3 | UBS Group AG | 2,222 | 0.01% | $2K | +498 (+28.9%) |
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.