Millicom International Cellular S.A. (TIGO)
TIGO moved a median of +0.13% 30 minutes after news, and +0.20% by the close. How TIGO actually reacts to news — the realized, point-in-time move the market made, measured across 400 labeled events over the last three years with zero look-ahead.
TIGO’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.08% | 58% | 387 |
| 30-min | +0.13% | 60% | 400 |
| 60-min | +0.18% | 60% | 400 |
| to close | +0.20% | 57% | 399 |
| Middle 50% of TIGO reactions | -0.15% to +0.89% |
|---|---|
| Median reaction (30-min) | +0.13% |
| Measured reactions | 400 |
Half of all Millicom International Cellular S.A. news events land between -0.15% and +0.89% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How TIGO reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 33 | +0.14% | 55% | +0.76% |
| Analyst downgrades | 31 | -0.27% | 45% | -0.13% |
| Rating reiterations | 23 | +0.14% | 65% | +0.23% |
| Price-target raises | 16 | +0.20% | 63% | +0.95% |
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. 2 further classes were observed with fewer than 10 measured events and are not published. See how TIGO ranks against every other measured name →
That’s how TIGO usually reacts — get an email when it moves on news →Email me when TIGO moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to TIGO's baseline. Nothing else.
Recent TIGO events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 6-K MILLICOM INTERNATIONAL For: Aug 06 | SEC filing · Form 6-K | SEC EDGAR | -0.61% | -5.82% | |
| Form 6-K MILLICOM INTERNATIONAL For: May 21 | SEC filing · Form 6-K | SEC EDGAR | -0.75% | -0.19% | |
| Results of the Millicom (Tigo) AGM held today | Press release | GlobeNewswire | +0.28% | +1.66% | |
| Form 6-K MILLICOM INTERNATIONAL For: May 12 | SEC filing · Form 6-K | SEC EDGAR | -1.10% | -1.22% | |
| Millicom (Tigo) Q1 2026 Earnings Release | Press release | GlobeNewswire | +1.29% | +10.52% | |
| Millicom (Tigo) notice of first quarter 2026 results and video conference | Press release | GlobeNewswire | -0.01% | +1.58% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 28 | SEC filing · Form 6-K | SEC EDGAR | +0.15% | +0.18% | |
| Millicom (Tigo) strengthens its position in Colombia following the successful acquisition of the government stake in Coltel | Press release | GlobeNewswire | -1.53% | -1.78% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 17 | SEC filing · Form 6-K | SEC EDGAR | +0.61% | +2.02% | |
| Millicom (Tigo) subsidiary Telefónica Celular del Paraguay S.A.E. announces its intent to redeem in full Senior Notes due 2027 | Press release | GlobeNewswire | -1.84% | +0.63% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 15 | SEC filing · Form 6-K | SEC EDGAR | +0.67% | +5.16% | |
| Millicom completes upsized reopening of $87.5 million of 7.375% Senior Notes Due 2032 | Press release | GlobeNewswire | +0.25% | -2.47% | |
| FOX Latin America and Tigo Sports partner to expand sports content offering in Central America | Press release | GlobeNewswire | -0.60% | +0.17% | |
| Millicom (Tigo) strengthens regional connectivity in Central America through strategic agreement with Trans Americas Fiber System | Press release | GlobeNewswire | +1.18% | +0.08% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 02 | SEC filing · Form 6-K | SEC EDGAR | +1.02% | +1.24% | |
| Millicom prices reopening of $75 million of 7.375% Senior Notes Due 2032 | Press release | GlobeNewswire | -0.02% | +4.83% | |
| Form 6-K MILLICOM INTERNATIONAL For: Mar 26 | SEC filing · Form 6-K | SEC EDGAR | +1.70% | +2.70% | |
| Form 20-F MILLICOM INTERNATIONAL For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | +0.37% | +1.71% | |
| Millicom (Tigo) publishes its 2025 Annual Report, highlighting record financial results and expanded regional footprint | Press release | GlobeNewswire | +0.37% | +1.71% | |
| Form 6-K MILLICOM INTERNATIONAL For: Feb 26 | SEC filing · Form 6-K | SEC EDGAR | -0.27% | +3.91% | |
| Form 6-K MILLICOM INTERNATIONAL For: Feb 10 | SEC filing · Form 6-K | SEC EDGAR | +1.33% | +1.35% | |
| Millicom (Tigo) acquires Telefonica operations in Chile jointly with NJJ, structured to capture strategic value while protecting its balance sheet | Press release | GlobeNewswire | -1.62% | -2.90% | |
| Form 6-K MILLICOM INTERNATIONAL For: Feb 05 | SEC filing · Form 6-K | SEC EDGAR | +0.40% | +1.95% | |
| Millicom (Tigo) Successfully Concludes Tender Offer for Telefónica’s Controlling Stake in Colombia Telecomunicaciones S.A. E.S.P. (Coltel) | Press release | GlobeNewswire | +0.40% | +1.95% | |
| Form 6-K MILLICOM INTERNATIONAL For: Jan 30 | SEC filing · Form 6-K | SEC EDGAR | +2.33% | +0.93% | |
| Millicom (Tigo) announces successful bid for EPM’s Stake in UNE | Press release | GlobeNewswire | +0.20% | +0.38% | |
| Form 6-K MILLICOM INTERNATIONAL For: Nov 12 | SEC filing · Form 6-K | SEC EDGAR | +1.28% | — | |
| Comunicaciones Celulares S.A. Resolves DOJ Investigation Related to Historical Conduct | Press release | GlobeNewswire | +0.61% | +3.71% | |
| Form 6-K MILLICOM INTERNATIONAL For: Nov 06 | SEC filing · Form 6-K | SEC EDGAR | +0.14% | +0.02% | |
| Form 6-K MILLICOM INTERNATIONAL For: Oct 31 | SEC filing · Form 6-K | SEC EDGAR | -1.36% | -1.23% | |
| Millicom (Tigo) notice of third quarter 2025 results and video conference | Press release | GlobeNewswire | -0.09% | +0.17% | |
| Millicom (Tigo) completes acquisition of Telefónica in Uruguay, strengthening its regional footprint in South America | Press release | GlobeNewswire | +0.32% | +1.60% | |
| Form 6-K MILLICOM INTERNATIONAL For: Sep 08 | SEC filing · Form 6-K | SEC EDGAR | -0.35% | +2.33% | |
| Millicom (Tigo) Reaches Strategic Agreement with EPM to facilitate Merger Process with ColTel | Press release | GlobeNewswire | -0.14% | +1.52% | |
| Form 6-K MILLICOM INTERNATIONAL For: Aug 08 | SEC filing · Form 6-K | SEC EDGAR | +0.59% | +0.50% | |
| Millicom (Tigo) notice of second quarter 2025 results and video conference | Press release | GlobeNewswire | +0.17% | -0.24% | |
| Form 6-K MILLICOM INTERNATIONAL For: Jun 16 | SEC filing · Form 6-K | SEC EDGAR | -0.71% | -2.33% | |
| Form 6-K MILLICOM INTERNATIONAL For: Jun 13 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +1.40% | |
| Millicom (Tigo) Strengthens South American Leadership with USD 380 Million Acquisition of Telefónica Ecuador | Press release | GlobeNewswire | +0.00% | +1.40% | |
| Form 6-K MILLICOM INTERNATIONAL For: May 22 | SEC filing · Form 6-K | SEC EDGAR | +0.00% | +0.16% | |
| Millicom (Tigo) to Acquire Telefónica’s Operations in Uruguay for USD 440 Million, Expanding Presence in South America | Press release | GlobeNewswire | +0.63% | +0.05% | |
| Results of the Millicom (Tigo) AGM and EGM held today | Press release | GlobeNewswire | +0.05% | -0.33% | |
| ATIS Group to Acquire Lati Paraguay from Millicom, Expanding Tower Footprint in the Southern Cone | Press release | Business Wire | +0.96% | +2.51% | |
| Form 6-K MILLICOM INTERNATIONAL For: May 08 | SEC filing · Form 6-K | SEC EDGAR | +0.20% | +1.22% | |
| Millicom (Tigo) Q1 2025 Earnings Release | Press release | GlobeNewswire | +0.69% | +6.70% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 25 | SEC filing · Form 6-K | SEC EDGAR | +0.15% | +3.35% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 11 | SEC filing · Form 6-K | SEC EDGAR | +0.32% | +0.00% | |
| Form 6-K MILLICOM INTERNATIONAL For: Apr 08 | SEC filing · Form 6-K | SEC EDGAR | +0.35% | +2.99% | |
| Form 20-F MILLICOM INTERNATIONAL For: Dec 31 | SEC filing · Form 20-F | SEC EDGAR | — | +0.75% | |
| Form 6-K MILLICOM INTERNATIONAL For: Mar 24 | SEC filing · Form 6-K | SEC EDGAR | -0.10% | +0.98% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the TIGO section they belong to.
Where else TIGO is measured.
TIGO earnings → · Analyst actions → · SEC filings →
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How the numbers are made.
How is Millicom International Cellular S.A.'s median reaction calculated?
Every labeled TIGO 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 400 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. 60% of TIGO'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 TIGO'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.