By Bret Kenwell Warren Buffett has been a buyer of Apple stock. Here are the chart levels to know now for dip-buying bulls. Apple (AAPL) – Get Apple Inc. Report lately has held up well, after a not-so-perfect quarter and also with the marketwide selloff. On Monday, the S&P 500 hit its lowest level since May 2021, while the Nasdaq is currently 22.5% off its high. Not a pretty run. Over the weekend, Berkshire Hathaway (BRK.B) – Get Berkshire Hathaway Inc. Class B Report (BRK.A) – Get Berkshire Hathaway Inc. Class A Report held its annual meeting, where investors tuned in to hear what Warren Buff…