Apple, Facebook, ExxonMobil and dozens of other major companies report earnings in the week ahead, but central banks could bring on the volatility.
There is also a heavy schedule of economic reports in the coming week, including first quarter GDP on Thursday. Economists expect a barely positive number, and most forecasts are looking at growth under 1 percent. There are also durable goods Tuesday, international trade Wednesday and personal income and spending for March on Friday.
Oil inventory data from American Petroleum Institute on Tuesday afternoon and the Energy Department Wednesday morning will also be watched, as all markets are keeping an eye on oil prices. Brent was up almost 5 percent for the week to just above $45 a barrel, and the S&P energy sector was the best performer for the week — up 5 percent. The jump in oil prices surprised traders who were looking for a sell-off after producing nations failed to reach a deal to freeze production last weekend.