Medirom Healthcare Technologies Inc. - MRM
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | History | New | 56,102 | 57 | 0.0% | — | 1 | +56,102 | New | Q2 2026 | Sep 02, 2026 |
| HRT FINANCIAL LP | History | Added to | 54,755 | 56 | 0.0% | 0.0% | 2 | +42,850 | 359.93% | Q2 2026 | Aug 14, 2026 |
| UBS Group AG | History | Added to | 27,181 | 27 | 0.0% | 0.0% | 3 | +633 | 2.38% | Q2 2026 | Aug 13, 2026 |
| Virtu Financial LLC | History | New | 15,785 | 16 | 0.0% | — | 4 | +15,785 | New | Q2 2026 | Aug 13, 2026 |
| TWO SIGMA SECURITIES, LLC | History | Reduced | 10,565 | 10 | 0.0% | 0.0% | 5 | -3,412 | -24.41% | Q2 2026 | Aug 14, 2026 |
| GAMMA Investing LLC | History | Reduced | 3,798 | 3 | 0.0% | 0.0% | 7 | -2,611 | -40.74% | Q2 2026 | Jul 07, 2026 |
| RHUMBLINE ADVISERS | History | Added to | 3,104 | 3 | 0.0% | 0.0% | 6 | +1,120 | 56.45% | Q2 2026 | Aug 11, 2026 |
| Arax Advisory Partners | History | New | 300 | 0 | — | — | — | +300 | New | Q2 2026 | Aug 10, 2026 |