Foreign institutional investors (FIIs) were net buyers of Rs 652.08 crore (provisional) on Thursday, according to data released by BSE.While FIIs made gross purchases of Rs 3,449.51 crore, gross sales totalled Rs 2,797.43 crore.FIIs were net buyers of Rs 1,233.70 crore on Wednesday, July 18, according to data released by Sebi on Thursday. While FIIs made gross purchases of Rs 4,124.30 crore, gross sales totalled Rs 2,890.70 crore.Mutual funds (MFs) were net sellers of Rs 174.80 crore on Wednesday. MFs made purchases of Rs 550.70 crore and sales of Rs 725.50 crore.