Medirom Healthcare Technologies Inc. (MRM) — Institutional Holders, Q2 2026
8 institutional investment managers reported a MRM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $176.1K. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
MRM in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
New positions
3
Added to
3
Trimmed
2
Sold out
0
Biggest buyers
- CITADEL ADVISORSNew · +56,102 sh+$57.8K
- HRT FINANCIALAdded · +42,850 sh+$44.1K
- Virtu FinancialNew · +15,785 sh+$16.3K
- RHUMBLINE ADVISERSAdded · +1,120 sh+$1.2K
- UBS Group AGAdded · +633 sh+$652.00
Biggest sellers
- TWO SIGMA SECURITIESTrimmed · -3,412 sh-$3.5K
- GAMMA InvestingTrimmed · -2,611 sh-$2.7K
MRM 13F holders ranked 1–8 of 8
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | CITADEL ADVISORS#1 · 56,102 sh | 56,102 | $57.8K | 0.00% | New |
| 2 | HRT FINANCIAL#2 · 54,755 sh | 54,755 | $56.0K | <0.01% | +359.9% |
| 3 | UBS Group AG#3 · 27,181 sh | 27,181 | $28.0K | 0.00% | +2.4% |
| 4 | Virtu Financial#4 · 15,785 sh | 15,785 | $16.0K | <0.01% | New |
| 5 | TWO SIGMA SECURITIES#5 · 10,565 sh | 10,565 | $10.9K | <0.01% | -24.4% |
| 6 | GAMMA Investing#6 · 3,798 sh | 3,798 | $3.9K | — | -40.7% |
| 7 | RHUMBLINE ADVISERS#7 · 3,104 sh | 3,104 | $3.2K | 0.00% | +56.5% |
| 8 | SRS Capital Advisors#8 · 300 sh | 300 | $309.00 | 0.00% | New |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.