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 2026-07-28, as of 2026-03-31)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common Class A | RMSG · NASDAQ | 4,755,277 | 463,172 | 9.7% | 9 | G7410G106 |
| Common Class B | not listed | 5,887,680 | — | — |
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 (9 of 9 · G7410G106)
change vs 2026-03-31| # | Filer | Shares | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | JANE STREET GROUP, LLC | 172,814 | 3.63% | $85K | NEW |
| 2 | CITADEL ADVISORS LLC | 148,808 | 3.13% | $73K | NEW |
| 3 | Scientech Research LLC | 75,759 | 1.59% | $37K | NEW |
| 4 | UBS Group AG | 45,457 | 0.96% | $22K | +44,690 (+5826.6%) |
| 5 | XTX Topco Ltd | 16,610 | 0.35% | $8K | -8,228 (-33.1%) |
| 6 | MORGAN STANLEY | 2,000 | 0.04% | $981 | NEW |
| 7 | WOLVERINE ASSET MANAGEMENT LLC | 1,722 | 0.04% | $845 | NEW |
| 8 | SBI Securities Co., Ltd. | 1 | 0.00% | $0 | -3 (-75.0%) |
| 9 | Caitong International Asset Management Co., Ltd | 1 | 0.00% | $0 | NEW |
Exited since 2026-03-31 (2 filers; largest 2 shown)
| BANK OF MONTREAL /CAN/ | −20,000 |
| StoneX Group Inc. | −11,435 |
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/A | 2026-07-10 | 2026-06-30 | 1,153,324 | 6.5% |
| Bloomington DH Holdings Limited | SCHEDULE 13D/A | 2026-06-01 | 2026-05-05 | 6,267,555 | 79.24% |
| Kwai Hoi MA | SCHEDULE 13D/A | 2026-06-01 | 2026-05-05 | 7,667,555 | 97.71% |
| PERISCOPE CAPITAL INC. | SCHEDULE 13G/A | 2025-05-12 | 2025-03-31 | 205,500 | 4.1% |
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.