Bajaj Holdings & Investment on Wednesday reported an over twofold jump in its consolidated net profit for the quarter ended March 31, at Rs 835.8 crore. The company had posted a net profit of Rs 384.2 crore in the corresponding period last year, Bajaj Holdings & Investment said in a filing to the Bombay Stock Exchange. The consolidated net sales during the quarter, however, declined by 13.4 per cent to Rs 60.3 crore from Rs 69.7 crore in the year-ago period, it added.