About 10 hours ahead of the start of U.S. stock trading in New York, share-index futures were implying a lower open for Monday. Futures for the Dow Jones Industrial Average , S&P 500 and Nasdaq 100 implied a 0.5% drop for each index when the session begins. The futures could still make significant moves from their current levels, especially after the European markets open, but as it stood late Sunday, U.S. shares looked set to extend their retreat from Friday, when the Dow industrials dropped 0.8%, the S&P 500 fell 0.7%, and the Nasdaq Composite gave up 0.6%. News that talks over the weekend between the European Commission and Greece had ended without a deal appeared to be weighing on the index futures, as was a downbeat session for Asian shares, with Japan's Nikkei Average down 0.7% in the early afternoon, and Hong Kong's Hang Seng Index 1.4% lower.
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