"AI Stock Picks: Billionaires' Buying and Selling Trends Revealed"

Billionaire investors have been reducing their stakes in popular AI stocks like Nvidia and Microsoft, possibly due to increasing competition and valuation concerns. However, they have been buying shares of Amazon, which is utilizing AI in various ways and has rapidly growing ancillary segments like Amazon Web Services. The company's strong cash flow and historically cheap valuation relative to its cash flow may be driving investor interest.