All of Apple Inc.’s (Nasdaq: AAPL) 270 U.S. retail stores are now open in some capacity for the first time since closures due to the Covid-19 pandemic began nearly a year ago, an Apple spokesman confirmed. Stock jumped 5.39% yesterday in the biggest daily gains since October 12th. The jump came after Berkshire Hathaway chairman and CEO Warren Buffett said in his annual letter to investors published this weekend that his investment firm owns 5.4% of Apple’s stock, making it Berkshire’s third-most valuable asset.