MEDIROM Healthcare Technologies Inc. - American Depositary Share (MRM)
MRM moved a median of -1.19% 30 minutes after news, and -0.64% by the close. How MRM actually reacts to news — the realized, point-in-time move the market made, measured across 159 labeled events over the last three years with zero look-ahead.
MRM’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 31% | 128 |
| 30-min | -1.19% | 31% | 145 |
| 60-min | -1.73% | 24% | 147 |
| to close | -0.64% | 40% | 157 |
| Middle 50% of MRM reactions | -3.17% to +0.85% |
|---|---|
| Median reaction (30-min) | -1.19% |
| Measured reactions | 159 |
Half of all MEDIROM Healthcare Technologies Inc. - American Depositary Share news events land between -3.17% and +0.85% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
Email me when MRM moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MRM's baseline. Nothing else.
Recent MRM events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K Medirom Healthcare Techn For: Oct 14 | SEC filing · Form 6-K | SEC EDGAR | +6.33% | +1.79% | |
| Form 6-K Medirom Healthcare Techn For: Aug 28 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.01% | |
| Form 6-K Medirom Healthcare Techn For: Aug 07 | SEC filing · Form 6-K | SEC EDGAR | +8.43% | +15.66% | |
| Form 6-K Medirom Healthcare Techn For: Jun 26 | SEC filing · Form 6-K | SEC EDGAR | +3.64% | +0.32% | |
| MEDIROM MOTHER Labs Expands Deployment of "REMONY®" Remote Health Monitoring System in JGSDF 8th Division | Press release | GlobeNewswire | +3.64% | +0.32% | |
| Form 6-K Medirom Healthcare Techn For: May 29 | SEC filing · Form 6-K | SEC EDGAR | -11.47% | -9.02% | |
| Form 6-K Medirom Healthcare Techn For: May 28 | SEC filing · Form 6-K | SEC EDGAR | -2.28% | -11.63% | |
| MEDIROM Group Reports Q1 2026 Results | Press release | GlobeNewswire | -2.28% | -11.63% | |
| Form NT 20-F Medirom Healthcare Techn For: Dec 31 | SEC filing · Form NT | SEC EDGAR | +0.00% | +6.09% | |
| Form 6-K Medirom Healthcare Techn For: Apr 22 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -5.37% | |
| Form 6-K Medirom Healthcare Techn For: Apr 08 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -0.92% | |
| Form 6-K Medirom Healthcare Techn For: Feb 26 | SEC filing · Form 6-K | SEC EDGAR | -1.14% | -13.84% | |
| MEDIROM Launches Partnership with Tools for Humanity in February; Projects Approximately $39 Million in Income Before Income Taxes Over Two Years Following Expansion to 3,000 Nationwide Locations | Press release | GlobeNewswire | -1.14% | -13.84% | |
| Form 6-K Medirom Healthcare Techn For: Feb 03 | SEC filing · Form 6-K | SEC EDGAR | -0.69% | +0.00% | |
| Form 6-K Medirom Healthcare Techn For: Jan 30 | SEC filing · Form 6-K | SEC EDGAR | +0.34% | -1.35% | |
| Form 6-K Medirom Healthcare Techn For: Jan 23 | SEC filing · Form 6-K | SEC EDGAR | -4.62% | -2.31% | |
| MEDIROM Forms New Special Mission Team to Drive World ID Adoption Across 3,000 Locations Through Partnership with Tools for Humanity | Press release | GlobeNewswire | -4.62% | -2.31% | |
| Form 6-K Medirom Healthcare Techn For: Jan 08 | SEC filing · Form 6-K | SEC EDGAR | +0.78% | -1.56% | |
| World, Co-founded by Sam Altman and Alex Blania, Accelerates Expansion in Japan via MEDIROM Collaboration Re.Ra.Ku’s “Orb” Authentication Surpasses 20,000 Cumulative Verifications, Doubling in Approximately Two Months | Press release | GlobeNewswire | +0.78% | -1.56% | |
| Form 6-K Medirom Healthcare Techn For: Dec 29 | SEC filing · Form 6-K | SEC EDGAR | -2.62% | -3.18% | |
| MEDIROM Partners with World on Technology Envisioned by Sam Altman and Alex Blania: Deploying “Proof of Human” Infrastructure throughout Japan | Press release | GlobeNewswire | -2.62% | -3.18% | |
| MEDIROM Partners with World | Press release | GlobeNewswire | -2.62% | -3.18% | |
| Form 6-K Medirom Healthcare Techn For: Dec 22 | SEC filing · Form 6-K | SEC EDGAR | -1.36% | -0.91% | |
| Form 6-K Medirom Healthcare Techn For: Dec 15 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -4.59% | |
| Form 6-K Medirom Healthcare Techn For: Dec 11 | SEC filing · Form 6-K | SEC EDGAR | -0.65% | -5.63% | |
| Form 6-K Medirom Healthcare Techn For: Dec 04 | SEC filing · Form 6-K | SEC EDGAR | -0.48% | +0.95% | |
| MEDIROM Mother Labs Partners with TD SYNNEX to Accelerate National Adoption of "MOTHER Bracelet" and "REMONY" | Press release | GlobeNewswire | -0.48% | +0.95% | |
| Form 6-K Medirom Healthcare Techn For: Dec 03 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +4.15% | |
| Form 6-K Medirom Healthcare Techn For: Oct 30 | SEC filing · Form 6-K | SEC EDGAR | -6.98% | -4.19% | |
| MEDIROM MOTHER Labs Inc. Receives Capital Investment from Internal Investors | Press release | GlobeNewswire | -6.98% | -4.19% | |
| Form 6-K Medirom Healthcare Techn For: Oct 29 | SEC filing · Form 6-K | SEC EDGAR | +1.28% | -18.18% | |
| MEDIROM to Launch New Treasury Strategy Utilizing Cryptocurrency | Press release | GlobeNewswire | -1.49% | -19.08% | |
| Form 6-K Medirom Healthcare Techn For: Oct 28 | SEC filing · Form 6-K | SEC EDGAR | +0.77% | +0.77% | |
| More than 10,000 people receive verified World IDs at MEDIROM locations | Press release | GlobeNewswire | +0.77% | +0.77% | |
| Form 6-K Medirom Healthcare Techn For: Jun 30 | SEC filing · Form 6-K | SEC EDGAR | +0.08% | +2.07% | |
| Form 6-K Medirom Healthcare Techn For: Oct 20 | SEC filing · Form 6-K | SEC EDGAR | -1.60% | -2.80% | |
| Form 6-K Medirom Healthcare Techn For: Oct 09 | SEC filing · Form 6-K | SEC EDGAR | -2.49% | -12.86% | |
| Series A Round Valuation: ¥9 Billion: MEDIROM MOTHER Labs Inc. Decides to Make an Investment from Internal Investors | Press release | GlobeNewswire | -2.49% | -12.86% | |
| Form 6-K Medirom Healthcare Techn For: Sep 25 | SEC filing · Form 6-K | SEC EDGAR | -6.89% | -30.17% | |
| Medirom Decides to Double Installation of Authentication Device “Orb” to 200 Stores, in Collaboration with “World” Co-founded by Sam Altman and Alex Blania | Press release | GlobeNewswire | -6.89% | -30.17% | |
| Form 6-K Medirom Healthcare Techn For: Sep 24 | SEC filing · Form 6-K | SEC EDGAR | +1.19% | -7.14% | |
| Form EFFECT Medirom Healthcare Techn | SEC filing · Form EFFECT | SEC EDGAR | +1.72% | -2.87% | |
| Form 6-K Medirom Healthcare Techn For: Sep 18 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -1.12% | |
| Japan Ground Self-Defense Force Adopts MEDIROM MOTHER Labs’ REMONY for Advanced Health Monitoring and Heatstroke Safety | Press release | GlobeNewswire | +0.00% | -1.12% | |
| Form F-3 Medirom Healthcare Techn | SEC filing · Form F-3 | SEC EDGAR | +2.78% | +2.78% | |
| Form 6-K Medirom Healthcare Techn For: Aug 28 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | -4.76% | |
| Medirom’s “REMONY” Certified by MLIT as a Fatigue-Driving Prevention Device | Press release | GlobeNewswire | +0.00% | -4.76% | |
| Form 6-K Medirom Healthcare Techn For: Aug 22 | SEC filing · Form 6-K | SEC EDGAR | -4.61% | -4.85% | |
| MEDIROM launches cryptocurrency strategy with next-generation proof of human technology, "World" | Press release | GlobeNewswire | -4.61% | -4.85% | |
| Form 6-K Medirom Healthcare Techn For: Aug 20 | SEC filing · Form 6-K | SEC EDGAR | -3.81% | — |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MRM section they belong to.
Where else MRM is measured.
MRM earnings → · Analyst actions → · SEC filings →
Every ticker we measure the same way24
Apple (AAPL)
How AAPL actually reacts to news, measured.
NVIDIA (NVDA)
How NVDA actually reacts to news, measured.
Tesla (TSLA)
How TSLA actually reacts to news, measured.
Microsoft (MSFT)
How MSFT actually reacts to news, measured.
Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
How AMZN actually reacts to news, measured.
Alphabet (GOOG)
How GOOG actually reacts to news, measured.
Meta Platforms (META)
How META actually reacts to news, measured.
Broadcom (AVGO)
How AVGO actually reacts to news, measured.
JPMorgan Chase (JPM)
How JPM actually reacts to news, measured.
Visa (V)
How V actually reacts to news, measured.
Walmart (WMT)
How WMT actually reacts to news, measured.
Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
How UNH actually reacts to news, measured.
Netflix (NFLX)
How NFLX actually reacts to news, measured.
Johnson & Johnson (JNJ)
How JNJ actually reacts to news, measured.
Exxon Mobil (XOM)
How XOM actually reacts to news, measured.
Home Depot (HD)
How HD actually reacts to news, measured.
Costco (COST)
How COST actually reacts to news, measured.
Mastercard (MA)
How MA actually reacts to news, measured.
Oracle (ORCL)
How ORCL actually reacts to news, measured.
Salesforce (CRM)
How CRM actually reacts to news, measured.
Bank of America (BAC)
How BAC actually reacts to news, measured.
Coca-Cola (KO)
How KO actually reacts to news, measured.
Walt Disney (DIS)
How DIS actually reacts to news, measured.
Browse all tickers
Every name we’ve measured, in one place.
How the numbers are made.
How is MEDIROM Healthcare Technologies Inc. - American Depositary Share's median reaction calculated?
Every labeled MRM news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 159 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 31% of MRM's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MRM's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.