It's the busiest day of the second-quarter earnings season with a bunch of companies having reported before the bell and just as many set for this afternoon. Positive earnings from Facebook Inc. (FB) - Get Report boosted markets, sending the Nasdaq to intraday highs. Comcast Corp. (CMCSA) - Get Report moved higher after it turned out a strong quarterly performance tied to solid box office, TV and theme park results. Overall revenue jumped nearly 10% with the largest gains seen in filmed entertainment. Twitter Inc. (TWTR) - Get Report sold off on worrying signs of slowing user growth. The social network reported 328 million monthly active users over the second quarter, a flat reading from the first three months of the year. Anheuser-Busch InBev (BUD) - Get Report led the consumer sector higher on better-than-expected earnings. Strong performances in Mexico, Australia and South Africa offset weakness in Brazil.