Offloading of bets -- today being the last trading session of the September series contracts in the futures and options (F&O) segment -- made investors go slow.
The 30-share flagship index was down 44.27 points, or 0.14 per cent, at 31,115.54.
The gauge had fallen 1,263.95 points in the previous seven sessions.
BSE indices led by oil and gas, PSU, consumer durables, auto, healthcare, metal and bank stocks declined by up to 2.07 per cent.
The 50-share NSE Nifty turned lower by 43.10 points, or 0.44 per cent, at 9,692.65.
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Asian Paints, Adani Ports, ONGC, Maruti Suzuki and Reliance Industries slid up to 2.42 per cent.
Hong Kong's Hang Seng weakened 0.35 per cent while Shanghai Composite lost 0.24 per cent in early trade. Japan's Nikkei, however, moved up 0.29 per cent.
US Dow Jones Industrial Average ended 0.55 per cent higher yesterday.
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