Japan Stocks Surge to AllTime High on Iran Deal Optimism Healthcare and Tech Lead SP 500 Higher as Broad Gains Offset Communication Services Weakness Ubisoft Shares Decline After Company Warns of Continued Losses Singtel Shares Drop 64 as Singapore Business Weakens Key Takeaways from FullYear Results Serve Robotics SERV Oversold Status Raises Questions Among AI Investors Berkshire Hathaway Revamps Portfolio New 26 Billion Delta Stake and Massive Alphabet Increase Billionaire Bill Ackman Boosts Amazon and Microsoft Holdings Cuts Alphabet Stake by 95 in First Quarter