Berkshire Hathaway (NYSE:BRK.B) has reshaped its equity portfolio, exiting Visa, Mastercard, UnitedHealth Group, and Amazon. The latest 13F filing also shows a substantial new position in Delta Air Lines, signaling a different stance on airlines. These portfolio moves come under CEO Greg Abel following Warren Buffett’s retirement, pointing to a fresh management approach. Berkshire Hathaway, trading at around $488.13 per share, sits at the center of attention as investors assess what these...