Foreign institutional investors (FIIs) were net buyers of Rs 139.10 crore on Friday, November 3, according to data released by Sebi today.While FIIs made gross purchases of Rs 1444.40 crore, gross sales totalled Rs 1305.20 crore.Mutual funds (MFs) were net buyers of Rs 77.65 crore on Friday. MFs made purchases of Rs 525.32 crore and sales of Rs 447.67 crore.