MercadoLibre is trading 12.35% down at $1,525.05 after Q3 earnings fell below expectations, with margin pressure weighing on results. - November 4 results showed revenue reached $10.75 billion, beating estimates despite revenue growth. - Higher fulfillment investment, free-shipping costs and increased marketing spending weighed on margins; operating margin was 6.3%, below the 7% analyst expectation. - Management offered no specific Q4 or 2027 financial targets.