The Sensex shrugged off its early losses and swung by almost 230 points at noon trade on the back of bargain buying in banking, auto, metal, capital goods and IT sector stocks. Sensex, which had opened 161 points down at 19,101 level, bounced back and now trading at 19,495 level. It had lost 440 points in the previous five straight sessions. In a similar fashion, the wide-based National Stock Exchange Nifty index, which slid by 50 points in early trade is now trading up 61 points at 5,848 points.