1. Fed focus: The US Federal Reserve wraps up its first meeting under new chief Jerome Powell and will be announcing its interest rate decision at 2 p.m. ET.
Powell will then hold his first press conference as Fed chairman.
The central bank is all but certain to lift interest rates. The bigger question is, what will the Fed do next?
The US central bank has been slowly raising rates to keep the economy humming without causing it to overheat. But a recent $1.5 trillion tax cut and $300 billion spending bill, along with an improved economic outlook, have more recently changed that calculus.
It may now have to raise rates faster than it had planned to prevent the economy from overheating.
Fed officials will also release revised economic forecasts on Wednesday, which will signal whether the central bank expects to raise rates four times this year rather than three.
There are concerns about how Facebook allowed outsiders including the political data firm Cambridge Analytica to use its data.
Facebook shares were down 2.5% premarket. The company's market value has plunged almost $50 billion this week.
3. Earnings: General Mills is set to release earnings before the bell, while Guess and Scholastic will follow after the close.
Hong Kong-listed tech giant Tencent released annual results on Wednesday. Shares in the firm doubled last year and the company's valuation has now firmly surpassed that of Facebook.
BMW shares gained less than 1% after the German automaker said that its operating profit increased 5.3% in 2017.
4. Global stock market overview: US stock futures were soft.
5. Coming this week:
Wednesday - Powell's first press conference
Thursday - Darden, Nike earnings