Foreign institutional investors (FIIs) were net sellers of Rs 598.51 crore (provisional) on Wednesday, according to data released by BSE.While FIIs made gross purchases of Rs 2,350.87 crore, gross sales totalled Rs 2,949.38 crore.FIIs were net buyers of Rs 837.40 crore on Tuesday, May 29, according to data released by Sebi on Wednesday. While FIIs made gross purchases of Rs 2,282 crore, gross sales totalled Rs 1,444.60 crore.Mutual funds (MFs) were net sellers of Rs 4.20 crore on Tuesday. MFs made purchases of Rs 636 crore and sales of Rs 640.20 crore.