Foreign institutional investors (FIIs) were net buyers of Rs 653.76 crore (provisional) on Friday, according to data released by BSE. While FIIs made gross purchases of Rs 2,920.56 crore, gross sales totalled Rs 2,266.80 crore.Domestic institutional investors (DIIs) were net buyers of Rs 166.69 crore on Friday. While DIIs made gross purchases of Rs 1,401.46 crore, gross sales totalled Rs 1,234.77 crore.FIIs were net buyers of Rs 944 crore on Thursday, December 27, according to data released by Sebi on Friday. While FIIs made gross purchases of Rs 6,774.30 crore, gross sales totalled Rs 5,830.30 crore.Mutual funds (MFs) were net buyers of Rs 716 crore on Thursday. MFs made purchases of Rs 1,835.50 crore and sales of Rs 1,119.50 crore.