MercadoLibre stock grows 45% as Q3 margin falls to 6.3%

MercadoLibre reported strong third-quarter growth on November 4, 2026, but the expansion came with lower profitability. In its financial results release, the Latin American e-commerce and fintech group said net revenue and financial income rose 45% year over year to 10.75 billion US dollars for the quarter ended September 30.

Income from operations reached 676 million US dollars, producing a 6.3% operating margin. Net income was 448 million US dollars, with a 4.2% margin. The results underline the central investment question for MercadoLibre stock: the company is gaining scale quickly, while fulfillment, shipping and customer-acquisition spending weigh on earnings conversion.

Logistics investment weighs on margins

Mercado Libre increased fulfillment capacity by almost 20% from the previous quarter as it prepared for the peak shopping season. The company said the expansion was significantly larger than the 10% increase in the comparable period a year earlier, raising shipping operating costs before the new capacity could be fully utilized.

Marketing spending in Brazil also increased as the company expanded its creators and affiliates programs. Chief Financial Officer Martín de los Santos said the investments were intended to increase engagement and strengthen the ecosystem over time. Management expects the larger logistics footprint to improve unit economics as capacity fills during the fourth quarter and beyond.

Commerce remained the largest growth engine. Gross merchandise volume reached about 23 billion US dollars, up 33% year over year on an exchange-rate-neutral basis, while items sold rose 36% to 867 million. The company added 17 million buyers year over year, and items per buyer increased 12%.

Fintech adds operating scale

Mercado Pago continued to broaden the group's earnings base. Monthly active users increased 29% year over year to 93 million, while assets under management rose 67% in US dollars to 25 billion US dollars. The credit portfolio expanded 62% to 17.9 billion US dollars, although asset quality remained an important risk for investors as lending grows.

Advertising revenue increased 58% in US dollars, supported by demand in Brazil and the expansion of Mercado Ads across social and streaming channels. Acquiring payment volume reached 68 billion US dollars, up 40% on an exchange-rate-neutral basis. These businesses can help diversify revenue, but they also require continued investment in technology, credit and distribution.

What investors watch next

MercadoLibre stock traded at 1,361.30 euros on Lang & Schwarz at 13:59 CET on Wednesday, November 11, 2026. For investors, the next test is whether stronger engagement and higher fulfillment utilization can translate into margin recovery after the seasonal investment period.

The company is also expected to remain focused on shipping economics, affiliate marketing and credit quality. Its results show that growth remains broad across commerce and fintech, while management is accepting near-term margin pressure to build customer frequency and infrastructure.

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