America Movil, S.A.B. de C.V. American Depositary Shares (each representing the right to receive twenty (20) Series B Shares (AMX)
AMX moved a median of -0.07% 30 minutes after news, and -0.58% by the close. How AMX actually reacts to news — the realized, point-in-time move the market made, measured across 19 labeled events over the last three years with zero look-ahead.
AMX’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 32% | 19 |
| 30-min | -0.07% | 37% | 19 |
| 60-min | -0.09% | 37% | 19 |
| to close | -0.58% | 11% | 19 |
Small sample: only 19 measured events — treat these medians as indicative, not stable.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How AMX reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 44 | +0.00% | 50% | +0.37% |
| Analyst downgrades | 20 | +0.31% | 70% | +0.10% |
| Coverage initiations | 16 | -0.22% | 38% | +0.23% |
| Rating reiterations | 33 | +0.07% | 61% | -0.26% |
| Price-target raises | 13 | +0.14% | 62% | -0.12% |
| Price-target cuts | 14 | -0.07% | 29% | -0.77% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. See how AMX ranks against every other measured name →
That’s how AMX usually reacts — get an email when it moves on news →Email me when AMX moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to AMX's baseline. Nothing else.
Recent AMX events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K AMERICA MOVIL SAB DE For: Dec 31 | SEC filing · Form 6-K | SEC EDGAR | -0.77% | +2.06% | |
| América Móvil Files Annual Report on Form 20-F | Press release | Business Wire | -0.34% | -0.30% | |
| H.I.G. Capital Announces Sale of Brazilian Portfolio Company Desktop to Claro | Press release | Canada Newswire | +0.00% | -0.96% | |
| América Móvil Files Annual Report on Form 20-F | Press release | Business Wire | -0.74% | -1.37% | |
| Claro Enterprise Solutions Expands Technology Service Offerings to Accelerate Mergers and Acquisitions Integrations | Press release | PR Newswire | +0.13% | -0.73% | |
| Claro Enterprise Solutions Unveils a Unified Security Solution for Modern Workplace Collaboration | Press release | PR Newswire | -0.03% | -0.41% | |
| ICARO Media Group Announces 10-Year Contract with América Móvil's Claro Brasil | Press release | PR Newswire | +0.03% | -0.09% | |
| Claro Enterprise Solutions Hosts First Virtual Summit to Help Businesses Prepare for a Cyber-Physical Future | Press release | PR Newswire | +0.00% | -0.43% | |
| Claro Enterprise Solutions Announces New AI-Enhanced Back-to-School Safety and Security Starter Kit | Press release | PR Newswire | +0.09% | -0.30% | |
| Claro Enterprise Solutions Debuts its Cyber-Physical Initiative at Black Hat 2024 | Press release | PR Newswire | -0.15% | -1.34% | |
| Claro Enterprise Solutions Awarded Comparably's Best Leadership Team Award for 2024 | Press release | PR Newswire | -0.82% | -1.75% | |
| New AI-Led Bullying and Vaping Detection Sensor Enhances School Safety | Press release | PR Newswire | -0.07% | +0.04% | |
| América Móvil Files Annual Report on Form 20-F | Press release | Business Wire | +0.10% | -0.15% | |
| Claro Enterprise Solutions Doubles U.S. Customer Portfolio to Accelerate Security, Productivity and Performance Advantages | Press release | PR Newswire | +0.22% | +0.59% | |
| Claro Enterprise Solutions Recognized for Best Company Outlook 2024 | Press release | PR Newswire | -0.08% | -0.78% | |
| Claro Enterprise Solutions is Revolutionizing Business Connectivity and Security with Secure Managed LAN powered by Fortinet | Press release | PR Newswire | -0.26% | -1.68% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the AMX section they belong to.
Where else AMX is measured.
AMX earnings → · Analyst actions → · SEC filings →
Other Communication Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| DIGERATI TECHS INC (DTGI) | 23 | +3.95% | 61% |
| CLEARTRONIC INC (CLRI) | 20 | 0.00% | 33% |
| SOFTBANK GROUP CORP (SFTBF) | 18 | 0.00% | 46% |
| BT GROUP PLC GBP (BTGOF) | 16 | 0.00% | 17% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Communication Services names, measured the same way →
Every ticker we measure the same way24
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Microsoft (MSFT)
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Advanced Micro Devices (AMD)
How AMD actually reacts to news, measured.
Amazon (AMZN)
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Walmart (WMT)
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Eli Lilly (LLY)
How LLY actually reacts to news, measured.
UnitedHealth Group (UNH)
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Netflix (NFLX)
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Johnson & Johnson (JNJ)
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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 America Movil, S.A.B. de C.V. American Depositary Shares (each representing the right to receive twenty (20) Series B Shares's median reaction calculated?
Every labeled AMX 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 19 events is what this page reports. On a sample this small (19 events), treat these medians as indicative, not stable. 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.
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 AMX'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.