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 2026-03-25, as of 2025-12-31)
| Class | Listed | Shares outstanding | Held by 13F filers | % of class | Holders | CUSIP |
|---|---|---|---|---|---|---|
| Common stock | MRX · NASDAQ | 72,937,470 | 56,651,696 | 77.7% | 215 | G5S37H101 |
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 (7 of 7 · G5T40M104)
change vs 2026-03-31| # | Filer | Shares / principal | % of class | Value | Change |
|---|---|---|---|---|---|
| 1 | GLOBEFLEX CAPITAL L P | 212,125 | — | $12.9M | NEW |
| 2 | ARGENT CAPITAL MANAGEMENT LLC | 50,858 | — | $3.1M | NEW |
| 3 | NKCFO LLC | 41,800 | — | $2.5M | NEW |
| 4 | Jackson Creek Investment Advisors LLC | 29,992 | — | $1.9M | NEW |
| 5 | FRED ALGER MANAGEMENT, LLC | 9,695 | — | $591K | NEW |
| 6 | NAVELLIER & ASSOCIATES INC | 7,877 | — | $480K | NEW |
| 7 | SBI Securities Co., Ltd. | 278 | — | $17K | 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 |
|---|---|---|---|---|---|
| T. Rowe Price Associates, Inc. | SCHEDULE 13G | 2026-08-14 | 2026-06-30 | 4,922,536 | 6.8% |
| Mr. Roger Nagioff | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| Sir Jeremy Isaacs | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| Amphitryon Limited (in liquidation) | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| Forty Two Point Two Acquisition Limited | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| JRJ Group Limited | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| JRJ Investor 1 LP | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| BXR Group Holdings Limited | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| MASP Investor Limited Partnership | SCHEDULE 13G/A | 2026-08-10 | 2026-06-30 | 0 | 0% |
| Abigail P. Johnson | SCHEDULE 13G/A | 2026-08-06 | 2026-06-30 | 5,368,485 | 7.5% |
| FMR LLC | SCHEDULE 13G/A | 2026-08-06 | 2026-06-30 | 5,368,485 | 7.5% |
| Ocean Ring Jersey Co Limited | SCHEDULE 13G/A | 2025-07-28 | 2025-06-30 | 0 | 0% |
| Ocean Trade Lux Co S.a r.l. | SCHEDULE 13G/A | 2025-07-28 | 2025-06-30 | 0 | 0% |
| Trilantic Capital Partners Associates IV (Europe) L.P. Inc | SCHEDULE 13G/A | 2025-07-28 | 2025-06-30 | 0 | 0% |
| Trilantic Capital Partners IV (Europe) L.P. | SCHEDULE 13G/A | 2025-07-28 | 2025-06-30 | 0 | 0% |
| Trilantic Capital Partners Management Limited | SCHEDULE 13G/A | 2025-07-28 | 2025-06-30 | 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.