STORY: Google parent Alphabet said Monday it is looking to raise $80 billion in equity offerings in its push to fund a costly expansion of its AI infrastructure.That includes a $10 billion investment from Berkshire Hathaway.The deal positions Warren Buffett’s company as a major investor, adding a high-profile endorsement of Alphabet’s long-term AI and cloud strategy.Berkshire will take $10 billion of shares in a private placement, adding to the position it has built since the third quarter of last year.Last month, the investment giant said it more than tripled its stake in the Google operator, which at nearly $17 billion has become one of its largest common stock investments.One analyst said the additional purchase underscores that Berkshire believes Alphabet will earn a reasonable return on its AI spending.