Apple Inc (NASDAQ:AAPL) is the largest stock in the Berkshire Hathaway Inc (NYSE:BRK) (NYSE:BRK) investment portfolio. While the conglomerate, led by legendary investor Warren Buffett, has been cutting its stake in the tech giant, the position has soared in value since the end of the second quarter.Buffett Making Billions From Apple StakeA 13F filing from Berkshire Hathaway for the second quarter revealed the conglomerate decreased its position in Apple by 7%.This marked the continuation of Berkshire Hathaw ...