OpenAI Explores Landmark IPO Potentially Rivaling SpaceX in Size Stock Markets Gain as USIran Talks Show Progress Treasury Yields Dip RBI Rate Cut Dilutes Old Policy Framework Nomura Suggests Dropbox Founder Drew Houston to Step Down as CEO After Nearly Two Decades Transition to Executive Chairman UK Childcare Review Targets Hidden Charges as Birthrates Hit Record Lows Nvidia Earnings Call in Focus Potential Commentary on China Chip Restrictions After Xi Summit Berkshire Hathaway Revamps Portfolio New Stakes in Delta Air Lines Alphabet Increase