U.S. stock-index futures fell on Wednesday, as fears that the Federal Reserve could raise interest rates sooner rather than later pressured Asian and European indices.
Read MoreTrack US stock index futures
Wall Street on Tuesday took its cues from rising sovereign bond yields, after
The Mortgage Bankers Association on Wednesday reported applications for home mortgages declined last week as interest rates rose.
Apple declined ahead of the open after Pacific Crest Securities downgraded its shares to perform from outperform, citing a "lack of compelling features" on the Apple Watch.
Manchester United fell in early New York trading after the British soccer club reported a fourth-quarter loss.