MRM
Medirom Healthcare Technologies Inc.Company with tickers: MRM
CIK
1819704
CUSIP
58510H103
Shares Outstanding
7,901,950
Website
https://medirom.co.jp
Investor Relations
https://medirom.co.jp/ir
13F Activity (30d)
1 filings
1 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 4
Total Value: $38,387
Total Shares: 34,275
Institutional Ownership Trend
22 quarters
Holder Concentration
Across 4 13F filers · Δ vs Dec 31, 2025Top Holder
40.8%
−16.5 pts
Top 5
100.0%
0.0 pts
Top 10
100.0%
0.0 pts
HHI
3,253
Highly concentrated−948
Quarterly Activity
vs Dec 31, 2025
New
2
Increased
0
Decreased
2
Sold Out
2
Unchanged
0
Holder count:
0
Institutional value:
-97.7%
Shares held:
-96.0%
Top Buyers
vs Dec 31, 2025No qualifying movers this quarter.
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid GAMMA Investing LLC | −4,146 | 6,409 | |
| Mega RHUMBLINE ADVISERS | −2,269 | 1,984 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Small TWO SIGMA SECURITIES, LLC | 13,977 | $15,654 | |
| Large HRT FINANCIAL LP | 11,905 | $13,333 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| — Kufu Company Holdings, Inc. | 833,333 | $1,616,666 | |
| Mega UBS Group AG | 3,616 | $7,014 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Small TWO SIGMA SECURITIES, LLC Broker-Dealer | $15,654 | 40.78% | 13,977 | Shares | Sole | 2026-05-15 | ||||
| Large HRT FINANCIAL LP | $13,333 | 34.73% | 11,905 | Shares | Defined | 2026-05-14 | ||||
| Mid GAMMA Investing LLC | $7,178 | 18.70% | 6,409 | Shares | Defined | 2026-04-06 | ||||
| Mega RHUMBLINE ADVISERS | $2,222 | 5.79% | 1,984 | Shares | Sole | 2026-05-12 | ||||
| No holders match your search. | ||||||||||