Berkshire's operating earnings jump 34%, Buffett buys back no stock and raises cash hoard to $381 billion CNBCBerkshire profit rises, cash soars to record CNNBerkshire’s Quarterly Earnings Rise After Insurance Results Improve The Wall Street JournalBerkshire Hathaway’s Record Cash Pile Could Signal Buffett Is Waiting for Better Opportunities Yahoo FinanceBerkshire's cash swells as profit rises, signaling caution ahead of Buffett departure Reuters