Foreign institutional investors (FIIs) were net buyers of Rs 91.60 crore on Wednesday June 21, according to data released by Sebi today. While FIIs made gross purchases of Rs 1152.20 crore, gross sales totalled Rs 1060.70 crore.Mutual funds (MFs) were net buyers of Rs 97.93 crore on Wednesday. MFs made purchases of Rs 343.61 crore and sales of Rs 245.68 crore.