—— Blackstone Executive Pushes Back on AI Bubble Concerns; Meta Ramps Up AI Spending as Shares Slide More Than 7%; Hedge Funds Build Near-Record Short Positions; Blackstone Cuts Some Property Valuations; GTA 6 Hype Drives 22% Jump in US PlayStation 5 Sales; US Orders Some Diplomats and Families to Leave Saudi Arabia; Moderna, Merck Shares …