MEDIROM Healthcare Technologies Inc. (MRM) Ownership
MRM ownership summary
as of October 18, 2026- Institutions
- 2.1% of shares outstanding
- Insiders
- 23.71% of shares outstanding
- Shares outstanding
- 7.9M
- Float
- 5.8M shares available to trade
- Short interest
- 0.04% 2,779 shares short
- Days to cover
- 0.20 short interest down 78.6% vs prior month
- Institutions 2.12%
- Insiders 23.71%
- Other investors 74.16%
MRM top institutional holders
8 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Citadel Advisors Llc | 0.71% | 56K | $20,309 | +56,102 (0.0%) | June 30, 2026 |
| 2 | HRT FINANCIAL LLC | 0.69% | 55K | $19,821 | +42,850 (+359.9%) | June 30, 2026 |
| 3 | UBS Group AG | 0.34% | 27K | $9,840 | +633 (+2.4%) | June 30, 2026 |
| 4 | Virtu Financial LLC | 0.20% | 16K | $5,714 | +15,785 (0.0%) | June 30, 2026 |
| 5 | TWO SIGMA SECURITIES, LLC | 0.13% | 11K | $3,825 | −3,412 (−24.4%) | June 30, 2026 |
| 6 | GAMMA Investing LLC | 0.05% | 3,798 | $1,375 | −2,611 (−40.7%) | June 30, 2026 |
| 7 | Rhumbline Advisers | 0.04% | 3,104 | $1,124 | +1,120 (+56.5%) | June 30, 2026 |
| 8 | SRS Capital Advisors Inc | <0.01% | 300 | $109 | +300 (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 8, 6 holders added 117K shares and 2 cut 6,023.
MRM top mutual fund and ETF holders
1 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Core Guided Moderate Tax-Managed | <0.01% | 16 | $6 | +16 (0.0%) | September 30, 2023 |
Funds report holdings monthly or quarterly; dates differ by fund.
MRM shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns MRM
Institutional investors own 2.1% of MEDIROM Healthcare Technologies's shares and insiders 23.71%. The largest holder is Citadel Advisors Llc with 0.71% of the shares (56K), as of June 30, 2026. Among the top 8 institutions, 6 added shares and 2 reduced their stake in the latest filings. Short interest is 0.04% of the float, or 0.20 days of average trading volume. The share count rose 66.9% since 2017.
See the MRM stock overview for the latest quote and news.
MRM ownership FAQ
Who owns the most MEDIROM Healthcare Technologies stock?
The largest shareholders of MEDIROM Healthcare Technologies are Citadel Advisors Llc (0.71%), HRT FINANCIAL LLC (0.69%), UBS Group AG (0.34%), Virtu Financial LLC (0.20%), TWO SIGMA SECURITIES, LLC (0.13%).
What percentage of MEDIROM Healthcare Technologies is owned by institutions?
Institutions hold 2.1% of MEDIROM Healthcare Technologies's shares outstanding; insiders hold 23.71%.
Which funds own MEDIROM Healthcare Technologies?
The largest fund holders of MEDIROM Healthcare Technologies are Core Guided Moderate Tax-Managed (<0.01%).
What is MEDIROM Healthcare Technologies's short interest?
2,779 shares of MEDIROM Healthcare Technologies were sold short, 0.04% of the float; at the average daily volume it would take 0.20 days to cover.
How many shares of MEDIROM Healthcare Technologies are outstanding?
MEDIROM Healthcare Technologies has 7.9M shares outstanding, of which 5.8M are in the public float.