Bloodbath on Dalal Street; Sensex sinks more than 700 points: The markets went into a tailspin, with both the Sensex and Nifty touching their lowest levels in this calendar year, as surging crude oil and domestic factors sent the participants scurrying for cover. The BSE Sensex plunged more than 700 points to break below its crucial psychological level of 27,000 and the Nifty broke its crucial 200-DMA mark.The country's benchmark indices - the Sensex and the Nifty - after gaining nearly 30% in 2014 are trading in the negative this year even as other global peers have held the ground. The Sensex ended at 26,717, lower by 722 points or 2.6% and the Nifty settled with losses of 227 points or 2.7% at 8,097. In fact, the Nifty ended below 8,100 for the first time since Dec 17, 2014.The broader markets also melted in tandem with the benchmark indices, with the BSE mid-cap index and small-cap index shedding 3.2% each at 10,265 and 10,829 respectively. The extent of the carnage was so severe that there were four declining stocks behind every advancing stock.