These were among the most active stocks ahead of Monday's market open: Wayfair Inc.'s stock climbed 14% after the Boston-based online furniture retailer swung to a surprise second-quarter profit. * ...

Berkshire Hathaway (NYSE: BRKa) stock fell 0.6% after Warren Buffett’s sprawling conglomerate posted a $3.76 billion ...

Net seller for 11 quarters in a row: Berkshire sold another net $3 billion in stocks in the quarter, and now has a cash pile ...