Buy or sell stocks, May 13 -- Benchmark indices BSE Sensex and Nifty 50 extended their losing streak for a fourth straight session on Tuesday, May 12, weighed down by mixed global market signals.

The 30-share Sensex tumbled 1,566 points, or 2%, to hit an intraday low of 74,449, while the Nifty 50 also slipped 2% to touch the day's low of 23,348. By the close, the Sensex had settled 1,456 points, or 1.92%, lower at 74,559.24, while the Nifty 50 ended down 436 points, or 1.83%, at 23,379.55.

On Friday, the Nifty 50 opened with a gap-down at 23,722.60, indicating continued weakness in market sentiment. The index registered its intraday high of 23,757.55 within the first few minutes of trade, following which sustained selling pressure dragg...