Billionaires Ramp Up AI Stock Buys as S&P 500 Dips 0.53% to 7,096

Billionaire investors are doubling down on Nvidia, Meta Platforms, and Amazon amid ongoing institutional flows into AI and cloud leaders, even as the S&P 500 slips 0.53% to 7,096.30. Today's reports emphasize Nvidia's record $62.31 billion data-center revenue (up 75% YoY) and $78 billion Q1 guidance, Meta's $60 billion Q4 revenue with $58.1 billion from ads and $115-135 billion capex plans, plus Amazon's $35.58 billion AWS growth (24% YoY) and $21.32 billion in ads. These concentrated buys by managers like Loeb, Dalio, and Ackman signal potential rebound and upside for the index given the stocks' heavy weighting.