Stock Futures Dip as USIran Nuclear Talks Fuel Market Uncertainty Fintech Firm Mercury Hits 52 Billion Valuation After Funding Round Up 49 in 14 Months IonQ Shares Surge as US Quantum Funding Plan and Record Q1 Results Boost Sector Optimism China Calls for APEC Cooperation as Commerce Minister Skips Meeting on Urgent Official Business Barclays Posts 18 Profit Increase Raises FullYear Income Outlook Mamaearth and LIC Lead Fridays Stock Movers Among Top Gainers and Losers Marvell Technology Stock Rally Faces Key Test as FirstQuarter Earnings Approach