Chewy vs. MercadoLibre: Which E-Commerce Stock Is a Better Buy in 2026?

MercadoLibre is presented as the stronger long-term pick after FY2025 revenue grew 39.1% to $28.9 billion and net income reached $2.0 billion, versus Chewy's 6.2% revenue growth to $12.6 billion and $222.8 million of net income. MercadoLibre also surpassed $10 billion in quarterly revenue for the first time in Q2 2026, supported by simultaneous acceleration in e-commerce and Mercado Pago fintech services. Chewy trades at substantially lower valuation multiples—25.7x forward P/E and 0.7x sales versus MercadoLibre's 50.6x and 3.4x—but faces slower growth, competitive pressure, and a thinner 1.8% net margin.

Analysis

MELI’s premium should be evaluated as a platform-and-credit underwriting multiple, not as a retailer multiple. Its next leg of earnings depends on whether incremental Mercado Pago credit can scale without a rise in loss provisions; that makes Brazilian rates, FX translation and delinquency trends more important to the stock than headline commerce growth. The key 1-3 month catalyst is quarterly disclosure of credit-loss reserves, take rate and logistics investment intensity; sustained revenue growth with stable provisions would support further multiple expansion despite an already demanding valuation.

CHWY’s apparent valuation discount is less compelling once adjusted for the quality of cash generation and the low-margin nature of replenishment retail. Veterinary expansion can improve lifetime value and reduce customer churn over 6-18 months, but it also converts a historically asset-light model into one with labor, lease and clinic-utilization risk. Amazon’s most effective competitive weapon is unlikely to be broad pet assortment; it is targeted price and delivery pressure on the highest-frequency consumables that subsidize Chewy’s customer acquisition economics.

The non-obvious risk to the bullish MELI consensus is that investment in subsidized shipping and credit cards may mask deteriorating unit economics until a macro slowdown exposes the credit book. Conversely, a weaker BRL/ARS can create an entry opportunity if local-currency operating momentum remains intact, since dollar-reported results may temporarily understate competitive gains. For CHWY, an inflection in active-customer growth or evidence that clinic cohorts reach profitability faster than planned would invalidate the structural-margin bear case.

Key Decisions for Investors

• Initiate a 6-12 month long MELI / short CHWY dollar-neutral pair on a 5-8% pullback in MELI rather than chase strength. The thesis is superior reinvestment returns and multiple durability; exit if MELI’s credit-loss provisions accelerate materially for two consecutive quarters or commerce growth decelerates while logistics spending remains elevated.
• For a lower-beta expression, own MELI at a reduced gross weight and hedge part of Latin American macro exposure with long UUP or a Brazil equity hedge via EWZ during periods of BRL stress. FX-driven selloffs are investable only if payment volume and credit quality in local currency remain resilient.
• Avoid treating CHWY’s reported free cash flow as distributable owner earnings until stock-based compensation dilution, working-capital normalization and veterinary-clinic capital requirements are reconciled. Set an earnings alert for gross-margin expansion plus improving clinic utilization; that combination would justify covering any CHWY short leg.
• Use AMZN as a competitive-risk monitor rather than a direct hedge: accelerated same-day pet consumables promotions or shipping concessions would pressure CHWY’s retention economics first, while having limited bearing on MELI’s regional logistics moat.