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

Amazon’s AI and cloud business is showing strong momentum, with Bedrock used by 80% of Fortune 100 companies, Bedrock spend up 170% year over year, and cloud revenue up 28% in Q1, while Amazon stock is up 15% this year. MercadoLibre also posted robust growth, including 46% revenue growth, 38% GMV growth, 32% unique active customer growth, and 29% growth in monthly active users, but the stock has fallen as it invests for long-term expansion. The article is a comparative bullish analysis favoring MercadoLibre as the better long-term growth stock.

Analysis

The market is treating both names as “growth beneficiaries,” but the spread is really between monetization quality and capital intensity. AMZN’s AI spend is now showing up as operating leverage in cloud, which matters because the company can subsidize growth with retail cash flows and use its distribution footprint to lock in workloads. That creates a self-reinforcing moat: more enterprise AI usage improves cloud economics, which funds more infrastructure, which pulls in more enterprise demand.

MELI is the cleaner second-order underpenetration story, but it is also the more fragile one near term. The bullish setup depends on management successfully trading near-term margin for future share gains in markets where consumer behavior and credit penetration are still shifting; if funding costs rise or delinquency trends worsen, the market will punish the stock faster than it rewards top-line acceleration. The key difference versus AMZN is that MELI’s growth is less “AI optionality” and more “execution optionality,” so the time horizon for that thesis is months-to-years, not weeks.

The consensus likely underestimates how much of AMZN’s valuation reset has already been earned by the capex cycle. If AI demand stays hot, the next re-rating catalyst is not revenue growth itself but evidence that incremental spend is converting into higher cloud margins and faster backlog conversion. For MELI, the contrarian risk is that investors are extrapolating Amazon-like compounding without giving enough weight to macro and credit-cycle sensitivity in Latin America; that can create attractive entry points, but only if you size for volatility.

Relative-value-wise, the cleaner expression is not outright long-only growth, but AMZN over MELI when risk appetite is deteriorating and MELI over AMZN when the market is willing to pay for earlier-stage operating leverage. The main reversal triggers are a capex disappointment at AMZN or a credit-quality / FX wobble at MELI. In both cases, the stocks can move sharply over 1-2 quarters because the market is paying for narrative acceleration rather than current earnings stability.

Key Decisions for Investors

• Long AMZN vs. short MELI as a defensive growth pair trade into the next 1-2 earnings cycles; use it if macro risk rises, since AMZN’s cash flow backstop should compress downside relative to MELI.
• Buy AMZN on pullbacks over the next 3-6 months if cloud growth remains >25% and AI spend metrics keep inflecting; risk/reward favors adding on weakness because the market is still underpricing operating leverage from capex.
• Initiate a smaller tactical long MELI only after a 10-15% drawdown or on evidence that credit losses are stabilizing; this is a higher-beta compounder with strong upside but a much less forgiving tape.
• For event-driven exposure, consider AMZN calls into the next quarterly print if you expect another beat on cloud/AI monetization; the setup is for a multiple expansion, not just an earnings beat.
• Avoid pairing long MELI with leverage in a rising-rate or stronger-USD regime; the downside is disproportionately tied to funding costs and FX, which can overwhelm fundamental progress for several quarters.