Market Watch: Key Themes and Earnings to Watch This Week.

The S&P 500 maintained a key level as the Nasdaq strengthened its gain to 0.8%, with two key economic reports, the May consumer price index and the May producer price index, expected to affect the Fed's next policy move. The Federal Reserve Open Market Committee meets Tuesday and Wednesday. Cruise line stocks, including Carnival and Norwegian Cruise Line, saw gains after JPMorgan Chase upgraded the former and raised price targets on the latter. Tesla added another 1% in heavier-than-average daily volume, and is on track for its 12th consecutive gain.