AMX vs TIMB: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: TIMB is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AMX and TIMB share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AMX and TIMB exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

America Movil, S.A.B. de C.V. (AMX) is the largest telecommunications company in Latin America, headquartered in Mexico City and controlled by the Slim family. It provides wireless service under the Telcel brand in Mexico and the Claro brand across most of Latin America, alongside fixed-line telephone, broadband, and pay-TV services (including Telmex in Mexico) and enterprise and cloud solutions. As of the end of 2025 the company served roughly 331 million wireless subscribers and about 79 million fixed revenue-generating units across markets spanning Mexico, Brazil, Colombia, Argentina, the Andean and Central American regions, the Caribbean, and several countries in Central and Eastern Europe. The US-listed security is an ADR that trades on the NYSE and represents a block of the company's underlying Mexican shares.

Full AMX guide

TIM S.A. (NYSE: TIMB) is the Brazilian mobile operator formerly known as TIM Participacoes, controlled by Telecom Italia, and it is the third-largest wireless carrier in Brazil with roughly 62 million subscribers and about a 23% market share behind Vivo (Telefonica Brasil) and Claro (America Movil). The company runs a nationwide mobile network with expanding 4G and 5G coverage, is growing its postpaid and B2B businesses, and is pushing into adjacent digital services through fiber (I-Systems), fintech partnerships (a tie-up with PicPay's roughly 67 million accounts), and enterprise IT and AI (the V8.Tech acquisition). Its shares trade in the US as ADRs alongside the local TIMS3 listing on the B3 exchange in Sao Paulo.

Full TIMB guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• AMX drivers: Postpaid and data-led revenue growth; Free cash flow and deleveraging.
• TIMB drivers: Postpaid and mobile service revenue growth; Cost discipline and margin expansion.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The dominant risk is currency: most revenue is earned in Latin American currencies while the ADR and dividend are in US dollars, so a strong Mexican peso or weak regional currencies can swing reported earnings, as a currency-driven EPS miss in early 2026 showed. For TIMB, the largest risk is currency: TIMB earns in Brazilian reais but reports ADR value in US dollars, so a weakening real can erase local-currency gains for US holders.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick AMX if you believe its drivers more; TIMB if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AMX and TIMB guides.

AMX. America Movil trades at a mid-teens earnings multiple, roughly in line with large telecom peers and below high-growth tech. Reported figures are dominated by the Mexican peso conversion, so US-dollar ADR results can move even when local-currency operations are stable. Free cash flow rose meaningfully in 2025 while net debt fell, supporting the dividend and buybacks.

TIMB. TIMB trades at a modest low-teens earnings multiple with a high single-digit-adjacent dividend yield, reflecting its status as a mature, cash-generative telecom rather than a growth name. Revenue growth is in the mid-single digits in local currency, and reported US-dollar figures depend heavily on the Brazilian real exchange rate. Analysts broadly hold a neutral stance with price targets above the mid-2026 share price.

Headline figures (approximate, July 2026): AMX shows revenue (2025) ~Ps.944 billion (~$50 billion USD), net profit (2025) ~Ps.88 billion (~$4.6 billion USD), wireless subscribers ~331 million, market cap ~$75-80 billion; TIMB shows market cap ~$10.4B, revenue (ttm) ~$5.2B, net income (ttm) ~$830M, p/e ratio ~12.5x.

AMX and TIMB are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AMX and TIMB exposure against your real portfolio. It is not an investment adviser.