The Sensex at the Bombay Stock Exchange was trading 55 points in negative territory to 19,114 in late afternoon deals, due to fresh selling pressure mainly in banking, capital goods, consumer durable and auto sectors on the back of lower Asian cues. The 30-share barometer gained over 40 points in early trade.The Nifty, at the National Stock Exchange was also trading 24 points in red, to 5,810.