Foreign institutional investors (FIIs) were net buyers of Rs 543.30 crore (provisional) today, according to data released by BSE.While FIIs made gross purchases of Rs 2,737.73 crore, gross sales totalled Rs 2,194.43 crore.FIIs were net buyers of Rs 656 crore on Tuesday, February 6, according to data released by Sebi today. While FIIs made gross purchases of Rs 3,104.90 crore, gross sales totalled Rs 2,448.90 crore.Mutual funds (MFs) were net sellers of Rs 28.28 crore on Tuesday. MFs made purchases of Rs 646.82 crore and sales of Rs 675.10 crore.