Foreign institutional investors (FIIs) were net sellers of Rs 648.93 crore (provisional) today, according to data released by BSE.While FIIs made gross purchases of Rs 2,084.93 crore, gross sales totalled Rs 2,733.86 crore.Domestic Institutional Investors (DIIs) were net buyers of Rs 142.03 crore (provisional) today. While DIIs made gross purchases of Rs 686.26 crore, gross sales totalled Rs 544.23 crore.