Warren Buffett loaded up on Apple stock. Should you, too?

Apple shares have held up well in the face of a market-wide selloff, although the shares have dipped at times, which is when Berkshire Hathaway’s Warren Buffett backed up the truck to the tune of $600 million in Q1.Bret Kenwell
 for TheStreet:Over the weekend, Berkshire Hathaway held its annual meeting, where investors tuned in to hear what Warren Buffett and Charlie Munger thought of the market.Among the tidbits, Berkshire bought roughly $600 million of Apple stock in the first