Warren Buffett's Berkshire Hathaway grew profits by 86% last quarter as its stock portfolio soared in value

· *Warren Buffett's Berkshire Hathaway suffered an 11% drop in revenue in the second quarter,** but almost $30 billion in year-on-year investment gains meant its net income surged 86% to $26.4 billion.*
· *The famed investor's conglomerate appears to have sold $7.4 billion in stock last quarter, on top of the $6.1 billion it...