Regulators Approve the Tigo–Movistar Merger
Colombia’s SIC approved the merger of Colombia Móvil S.A. (Tigo) and Colombia Telecomunicaciones S.A. (Movistar) via Resolution No. 94169 of 2025. Millicom bought Telefónica’s 67.5% stake in Coltel for $400 million, with an adjusted price of about $362 million as of Sept. 2024. By Feb. 4, 2026, Tigo took operational control, targeting about 48% mobile share, subject to four-year plan protections and network separation.
How this was made
The 30-second read
Why it matters
Regulators approved the merger and required consumer-protection and competition safeguards, including a four-year restriction on changing existing customer plans, permanent network-core separation, and semiannual compliance reporting. These terms likely reduce the speed and magnitude of post-merger revenue and margin improvements.
Market read
Traders should focus on how the merger’s regulatory conditions affect synergy realization, pricing flexibility, and wholesale economics over the next four years.
What to watch
Compliance costs and the risk of delayed integration benefits due to semiannual reporting, independent auditing, and technical network separation could extend the period before full synergy capture.
Background
The article describes Millicom’s acquisition structure: Telefónica’s 67.5% stake in Coltel (Tigo-Movistar Colombia) and prior Central America consolidation, framed as fixed-mobile convergence and scale-driven cost reductions.
Ticker impact
Colombia’s SIC approved the Tigo-Movistar merger and Tigo took operational control by Feb. 4, 2026, ending Movistar’s autonomy.
Likely supportive for the stock on deal certainty, with upside tempered by mandated four-year plan protections and wholesale access obligations.
The article is a primary regulatory approval with specific conditions (four-year customer plan freeze, network core separation, semiannual compliance reporting) that directly affect post-merger economics and execution risk.
Market effects
Colombia’s telecom consolidation shifts competitive dynamics toward a larger second operator, while MVNO wholesale and fee-reduction requirements constrain pricing power.
Millicom’s cross-border roll-up narrative (Central America plus Colombia) reinforces a regional scale strategy that may influence peers’ regulatory expectations.
Limited direct global spillover, but it highlights how regulators in Latin America can materially shape telecom M&A economics.
Counterpoint
The approval may not translate into higher margins if the imposed four-year plan restrictions and wholesale access requirements keep effective ARPU growth muted.
Key entities
- companyTigo
Millicom’s Colombia business (Colombia Móvil S.A.) that assumed operational control and is integrating with Movistar under SIC conditions.
- companyMovistar
Colombia Telecomunicaciones S.A. (Movistar) whose autonomy ended in Colombia after the merger approval and operational-control transfer.
- regulatorSuperintendence of Industry and Commerce (SIC)
Colombia’s competition authority that approved the merger via Resolution No. 94169 of 2025 and imposed multi-year conditions.
- companyClaro
Dominant Colombian operator referenced as the competitive benchmark after the combined Tigo-Movistar reaches about 48% mobile share.
- companyWOM
Smaller operator referenced as benefiting from mandated wholesale access and network fee reductions of 12% to 24%.
