8 institutions reported holding $176,081 of MEDIROM HEALTHCARE TECH INC (MRM) in SEC 13F filings for 2026-06-30. Largest institutional holders: CITADEL ADVISORS LLC ($57,785), HRT FINANCIAL LP ($56,000), UBS Group AG ($27,996), Virtu Financial LLC ($16,000), TWO SIGMA SECURITIES, LLC ($10,882). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $57,785 | 56,102 | New |
| 2 | HRT FINANCIAL LP | $56,000 | 54,755 | Added |
| 3 | UBS Group AG | $27,996 | 27,181 | Added |
| 4 | Virtu Financial LLC | $16,000 | 15,785 | New |
| 5 | TWO SIGMA SECURITIES, LLC | $10,882 | 10,565 | Trimmed |
| 6 | GAMMA Investing LLC | $3,912 | 3,798 | Trimmed |
| 7 | RHUMBLINE ADVISERS | $3,197 | 3,104 | Added |
| 8 | Arax Advisory Partners | $309 | 300 | New |
Source: SEC Form 13F filings · as of 2026-06-30