MercadoLibre (MELI) reported Q1 earnings Wednesday of $9.74 per diluted share, up from $6.78 a year earlier.
Analysts polled by FactSet expected $8.27.
Revenue for the quarter ended March 31 was $5.94 billion, up from $4.33 billion a year earlier.
Analysts surveyed by FactSet expected $5.47 billion.
The company's shares were rising past 10% in recent after-hours trading.