Stock market today: S&P 500 and Dow rise, Nasdaq slides as US-China tensions simmer, big banks report

US stocks diverged on Tuesday after China upped the ante in its trade spat with the US, while investors digested the kickoff of third quarter earnings season from Wall Street's banking giants. The Dow Jones Industrial Average (^DJI) rose 0.5% after paring steep losses earlier in the session. The S&P 500 (^GSPC) also flipped into the green, rising 0.1%, while the tech-heavy Nasdaq Composite (^IXIC) slipped 0.2%. The mood is unsettled after stocks' strong rebound on Monday, thanks to a fresh round of reta ...