MRM MEDIROM Healthcare Technologies Inc. - American Depositary Share
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Institutional owners (13F) 8 filers · $102K total · As of June 30, 2026
Institutions that report holding this stock in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| New positions | Exited positions | Increased | Decreased | Net shares change |
|---|---|---|---|---|
| 3 (+1 vs prior Q) | 0 (0 vs prior Q) | 2 (+1 vs prior Q) | 3 (+1 vs prior Q) | +110K |
Compared to Q1 2026. SEC Form 13F filings are due within 45 days of quarter-end plus a short buffer for late filers — quarters still inside that window are skipped in favor of the most recent fully-reported pair.
| Institution | Value | Shares | % of tracked 13F | Type |
|---|---|---|---|---|
| CITADEL ADVISORS LLC | $57,785 | 56,102 | 56.80% | Shares |
| UBS Group AG | $25,586 | 24,841 | 25.15% | Shares |
| TWO SIGMA SECURITIES, LLC | $10,882 | 10,565 | 10.70% | Shares |
| GAMMA Investing LLC | $3,912 | 3,798 | 3.84% | Shares |
| RHUMBLINE ADVISERS | $3,197 | 3,104 | 3.14% | Shares |
| Arax Advisory Partners | $309 | 300 | 0.30% | Shares |
| HRT FINANCIAL LP | $56 | 54,755 | 0.06% | Shares |
| Virtu Financial LLC | $16 | 15,785 | 0.02% | Shares |
Activists & 5%+ owners 3 positions
Investors who filed SEC Schedule 13D — beneficial ownership above 5% with an intent to influence the issuer (activist stakes, board campaigns, M&A). Each row shows the most recent known state of that filer's position.
| Filer | Filed | Stake | Status | Purpose | Filing |
|---|---|---|---|---|---|
| Kufu Company Holdings, Inc. ×3 filings | July 17, 2026 | 0.00% | Amendment | — | SEC |
| Kouji Eguchi, COZY LLC ×2 filings | Sept. 2, 2025 | 25.77% | Amendment | — | SEC |
| Kufu Company, Inc. | Jan. 6, 2023 | — | Initial filing | Passive investment | SEC |
Purpose is an automated classification of the filer's own stated purpose (SEC Item 4) — not investment advice. "—" means no clear purpose was stated or the text could not be classified.