The Dow Jones industrial average futures are down 95 points to 13,037. The Standard & Poor's 500 index futures are off 10.3 points to 1,398.5. The Nasdaq composite futures are down 19.25 points at 2,759.75.
The sell-off that began in the U.S. late Tuesday after the minutes from the Federal Reserve meeting were released carried over Wednesday in Asia and Europe.
Japan's Nikkei 225 index plunged 2.3 percent, its lowest close in nearly a month. All major European indexes are down.
Economic policy makers have put the brakes on new infusions of cash for the economy because the labor market is strengthening.