Berkshire Hathaway  on Friday disclosed a new $2.65 billion investment in Delta Air Lines and a small stake in Macy’s, and said it sold many of its smaller stock holdings including Amazon, UnitedHealth Group and the credit card networks Visa and Mastercard. The changes were part of a portfolio reshuffling in the first quarter, which followed the promotion of Greg Abel to succeed Warren Buffett as Berkshire’s chief executive. Berkshire said in a regulatory filing that it also more than tripled its share stake in Google parent Alphabet, which at $16.6 billion has become one of its largest common stock investments. Berkshire CEO Greg Abel succeeded Warren Buffett at the beginning of the year. REUTERS Berkshire also more than doubled its stake in the New York Times , and now owns about 9% of that company’s stock. The filing contained Omaha, Neb.-based Berkshire’s US-listed stock holdings as of March 31, which comprised most of its $288 billion equity portfolio.…