MRM · Medirom Healthcare Technologies Inc.
$1.01
-0.02 (-1.95%)
At close · Aug 20
Market Cap
$8.10M
Shares
7.90M
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: 8
Total Value: $176,734
Total Shares: 171,590
Institutional Ownership Trend
23 quarters
Holder Concentration
Across 8 13F filers · Δ vs Mar 31, 2026Top Holder
32.7%
−11.0 pts
Top 5
95.8%
−4.2 pts
Top 10
100.0%
0.0 pts
HHI
2,469
Moderately concentrated−469
Quarterly Activity
vs Mar 31, 2026
New
3
Increased
3
Decreased
2
Sold Out
0
Unchanged
0
Holder count:
+3
Institutional value:
+159.4%
Shares held:
+182.1%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large HRT FINANCIAL LP | +42,850 | 54,755 | |
| Mega RHUMBLINE ADVISERS | +1,120 | 3,104 | |
| Mega UBS Group AG | +633 | 27,181 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Small TWO SIGMA SECURITIES, LLC | −3,412 | 10,565 | |
| Mid GAMMA Investing LLC | −2,611 | 3,798 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | 56,102 | $57,785 | |
| Mid Virtu Financial LLC | 15,785 | $16,258 | |
| Mid Arax Advisory Partners | 300 | $309 |
Top Sold-Out Positions
vs Mar 31, 2026No fully closed positions this quarter.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega CITADEL ADVISORS LLC | $57,785 | 32.70% | 56,102 | Shares | 2026-08-14 | |
| Large HRT FINANCIAL LP | $56,397 | 31.91% | 54,755 | Shares | 2026-08-14 | |
| Mega UBS Group AG | $27,996 | 15.84% | 27,181 | Shares | 2026-08-13 | |
| Mid Virtu Financial LLC | $16,258 | 9.20% | 15,785 | Shares | 2026-08-13 | |
| Small TWO SIGMA SECURITIES, LLC Broker-Dealer | $10,881 | 6.16% | 10,565 | Shares | 2026-08-14 | |
| Mid GAMMA Investing LLC | $3,911 | 2.21% | 3,798 | Shares | 2026-07-07 | |
| Mega RHUMBLINE ADVISERS | $3,197 | 1.81% | 3,104 | Shares | 2026-08-12 | |
| Mid Arax Advisory Partners | $309 | 0.17% | 300 | Shares | 2026-08-10 |