Mumbai, Feb. 5 -- The key equity benchmarks closed deep in the red on Tuesday, breaking a three-day winning streak as investors locked in profits at stretched valuations. The rally, fuelled by optimism around the India-US trade deal, ran into selling as caution crept in ahead of the Reserve Bank of India's monetary policy decision due on Friday. Weakness was not limited to frontline stocks, with the broader market also sliding under pressure. The Nifty 50 slipped below the 25,650 mark, dragged down by sharp losses in metal, consumer durables and auto stocks.

The S&P BSE Sensex slumped 503.76 points or 0.60% to 83,313.93. The Nifty 50 index fell 133.20 points or 0.52% to 25,642.80. Over the past three consecutive trading sessions, the Sen...