The Market Is Shaky, But These 2 Stocks Are Built for the Long Haul

Costco reported retention above 90% and Q2 net sales growth of 9.1% year over year, while also raising its quarterly dividend to $1.47 per share on April 15. MercadoLibre posted 45% revenue growth to $8.76 billion in the final quarter of 2025, with Mercado Pago credit portfolio growth of 90% year over year, underscoring strong momentum in Latin American e-commerce and fintech. The piece is broadly bullish on both companies' long-term fundamentals, but it is largely commentary rather than new market-moving news.

Analysis

COST and MELI are both quality-compounder stories, but the market is likely underpricing the duration difference in their moats. Costco’s model is effectively a cash-flow annuity with low churn, which makes it a defensive equity that can keep compounding even if consumer spending weakens; the second-order winner is not just COST, but suppliers that ride its private-label and traffic halo while smaller retailers are forced to defend share with margin-dilutive promotions. MELI is the higher-beta version of the same “ecosystem capture” thesis: payments, credit, logistics, and marketplace monetization create a flywheel where each additional service lowers customer acquisition cost and raises switching costs.

The key risk on COST is valuation and re-rating asymmetry, not operating deterioration. When a stock is priced for perfection, even a modest deceleration in same-store sales or membership net adds can compress the multiple for 3-6 months despite still-healthy fundamentals. On MELI, the real tail risk is not revenue growth but credit quality: rapid loan book expansion can look immaculate for several quarters before delinquency spikes surface, so the equity can stay bid until the market starts discounting reserve build and funding costs.

The article’s bullish tone misses that these are not equally attractive from a risk/reward standpoint today. COST is the cleaner “sleep-at-night” long but likely lower upside unless the market rotates back into defensives; MELI has a much wider dispersion of outcomes and should trade more like a fintech/platform compounder than a retailer, which means the upside can rerate hard if Latin American macro stabilizes. Conversely, if FX weakens or regulators tighten consumer credit, MELI’s multiple can compress quickly even if headline growth remains strong.

For the next 3-12 months, catalysts matter more than the long-term stories: COST has dividend and membership-renewal visibility that should support downside, while MELI needs either improving credit metrics or accelerating monetization to justify its premium. In a risk-off tape, COST likely outperforms on quality factor flows; in a risk-on rebound, MELI should outperform on optionality and operating leverage.

Key Decisions for Investors

• Long COST as a 6-12 month defensive compounder; expect lower drawdown and steady upside, but size modestly because the valuation already prices in execution.
• Long MELI on a 6-12 month horizon only on pullbacks; higher convexity than COST, but pair it with a hard stop if credit losses or funding spreads begin to widen.
• Pair trade: long COST / short a basket of lower-quality discretionary retailers for 3-6 months to express consumer resilience with less margin risk.
• For higher-risk portfolios, buy MELI call spreads 6-9 months out to capture rerating upside while limiting downside if Latin American macro or regulation deteriorates.
• Avoid chasing COST after sharp outperformance; use weakness to add, because the main risk is multiple compression rather than business breakage.