Best Growth Stock to Buy Right Now: Amazon vs. MercadoLibre

MercadoLibre revenue expanded from $1B to $29B over the last 10 years, with Q4 2025 growth of +47% (constant currency), TPV +53%, GMV +37% but operating margin compressed to 10.1%. Amazon shows margin expansion with a 11.8% LTM operating margin, North American retail sales +10% YoY, and AWS accelerating to +24% revenue growth last quarter. MercadoLibre trades at an EV/EBIT of ~27 and is presented as a faster-growing name with greater margin expansion potential versus Amazon, which is more mature; the article views MELI as the better buy today if growth and eventual margin recovery materialize.

Analysis

MercadoLibre’s current margin compression looks like an executionally-driven, growth-investment phase rather than a structural deterioration — the key value lever is converting marketplace scale into higher-return financial services. If MercadoLibre can lift its take-rates by just a few hundred basis points across payments and credit while stabilizing credit loss rates, the operating leverage in logistics and fixed-cost amortization could materially boost free cash flow within 12–36 months.

The competitive landscape creates asymmetric outcomes: local fintechs and logistics specialists will need to compete on both unit economics and capital intensity, which favors whoever reaches profitable scale first. Amazon’s AI-driven AWS re-rating reduces binary risk in the sector, meaning crowd capital will seek safer, slower-growth AI exposures while chasing high-growth emerging-market fintechs; that flow dynamic can amplify MELI’s rerate once unit economics reassert.

Primary risks are macro (FX and Latin American consumer credit cycles) and execution (worsening credit losses or higher-than-expected last-mile costs). Near-term catalysts to watch are TPV margin mix, sponsored listings/advertising monetization cadence, and Brazil election/FX moves — any signal of sustained take-rate improvement or normalized credit costs should compress downside and trigger a multi-quarter rerate.

Key Decisions for Investors

• Long MELI LEAPS: Buy MELI Jan 2028 calls (size = 2–4% portfolio). Rationale: asymmetric payoff to a margin recovery + multiple re-rate over 18–36 months. Risk: full premium loss; Target: 2.5x–4x if TPV monetization and credit metrics normalize within 24 months.
• Relative pair: Long MELI / Short AMZN (notional-neutral) for 12 months to express faster growth and latent fintech optionality while hedging market beta. Exit: take profits if pair outperforms by 30% or cut if underperformance hits 15% — expected skew ~+20% asymmetric return if MELI margins rebound.
• Income/defensive overlay: If long shares, sell 3–6 month covered calls to collect premium while waiting for margin improvement; alternatively sell out-of-the-money short-dated puts to lower basis but size conservatively (max assignment risk).
• Risk-off hedge: Buy USD/BRL tail protection or short regional consumer credit ETFs for 6–18 months to hedge against an adverse FX/consumer credit shock that would disproportionately hit MELI’s financed receivables exposure.