The Bombay Stock Exchange benchmark Sensex rose by 187 points to a 16-month high in opening trade today. The 30-share BSE barometer shot up to 16,642.44 points with most of the heavyweight stocks quoting in positive territory.br/br/The Sensex was trading at 16,6,05 points when report last came in. The wide-based National Stock index Nifty which crossed 4,900-points level for the first time in almost 16 months in morning trade was trading at 4939 points at the same timebr/