World stock markets nosedived for a fourth day running on Tuesday, having seen $4 trillion wiped off from what just eight days ago had been record high values.
Europe's main markets started down as much as 3 percent and shares tumbled in Asia after a wild day for U.S. markets.
Two days of steep losses have erased the U.S. market's gains from the start of this year, ending a spate of record-setting calm for stocks.
The Dow Jones industrial average closed down 1,175 points on Monday, as the market bet on more interest rate hikes, the same day that a new Federal Reserve chairman was sworn in.
On Tuesday, Taiwan's main index lost 5.0 percent, its biggest since in 2011 and Hong Kong's Hang Seng Index dropped 4.2 percent. Japan's Nikkei dived 4.7 percent, its worst fall since November 2016, to four-month lows. Australia's benchmark S&P ASX 200 slid 3.4 percent, South Korea's Kospi declined 2.4 percent and the Shanghai Composite index was off 2.2 percent.