The Bombay Stock Exchange benchmark Sensex ended in negative zone for the third consecutive day. The BSE closed down 70 points at 16,283 on Wednesday. Earlier, the BSE Sensex started flat at 16, 336 points. But right after it was in negative terrain at 16,144. Overall, the Sensex went up and then down in the day and finally closed with a loss of 70 points at 16,283.