The Sensex at the Bombay Stock Exchange today gained 554 points to 19,824 in late morning trade on persistent buyingmainly in Auto, Capital Goods, Realty, Banking, FMCG stocks on the back of sustained foreign capital inflows coupled with higher global cues. The 30-share index, rose by 401 points in early trade.The Nifty, at the National Stock Exchange also moved up 169 points to 5,849.