Warren Buffett's Berkshire Hathaway has scored an $80 billion gain on Apple -- more than the famed investor's entire net worth

Paul Morigi / Stringer / Getty Images Warren Buffett's gain on his Apple investment exceeds his personal fortune. The billionaire investor's Berkshire Hathaway conglomerate spent about $35 billion to buy 245 million Apple shares that are now worth about $118 billion, representing a gain of more than $80 billion. Buffett's net worth has sunk by $11 billion this year to $78 billion, reflecting a decline in Berkshire's share price and his philanthropy. Berkshire's Apple stake is worth more than fou...