Global stock markets tumbled after weak manufacturing data in China fueled investors' worries about the world's second-largest economy.
The Stoxx Europe 600 fell 3.1% in early trade while futures contracts pointed to a 2.3% opening loss for the Dow Jones Industrial Average and a 2.4% fall for the S&P 500.
In Asia, the Shanghai Composite fell nearly 5% early in the session before ending the day down 1.2%. Hong Kong's Hang Seng Index fell 2.2% and Japan's Nikkei lost 3.8%.
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