Wall Street Today: S&P, Nasdaq open higher as US-Japan tariff talks begin; UnitedHealth drags Dow down 1.5%

Wall Street Today: US stock indices like the S&P and Nasdaq opened higher on Thursday, April 17, as US-Japan tariff talks begin. However, UnitedHealth dragged Dow Jones down 1.5% after the company missed earnings estimates along with the future guidance expectations. 

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