STM vs AMX Comparison

A merger between Italian firm SGS Microelettronica and the nonmilitary business of Thomson Semiconducteurs in France formed STMicroelectronics in 1987. STMicroelectronics is a leader in a variety of semiconductor products, including analog chips, discrete power semiconductors, microcontrollers, and sensors. It is an especially prominent chip supplier to the industrial and automotive industries.

América Móvil is the largest telecom carrier in Latin America, serving about 335 million wireless customers across the region. It also provides fixed-line phone, internet access, and television services in most of the countries it serves. Mexico is the firm's largest market, providing about 35% of service revenue. Móvil dominates the Mexican wireless market with about 60% customer share and also serves about half of the country's fixed-line internet access customers. Brazil, its second-most important market, accounts for about 20% of service revenue. Móvil sold its low-margin wireless resale business in the US to Verizon in 2021 and now owns a 1.4% stake in the US telecom giant. The firm also holds a 61% stake in Telekom Austria.