Foreign institutional investors (FIIs) were net buyers of Rs 311.37 crore (provisional) today, according to data released by BSE. While FIIs made gross purchases of Rs 2,275.51 crore, gross sales totalled Rs 1,964.14 crore.Domestic institutional investors (DIIs) were net sellers of Rs 8.26 crore (provisional) today. While DIIs made gross purchases of Rs 841.01 crore, gross sales totalled Rs 849.27 crore.FIIs were net buyers of Rs 410.40 crore on Wednesday, September 5, according to data released by Sebi today. While FIIs made gross purchases of Rs 2,703 crore, gross sales totalled Rs 2,292.70 crore.Mutual funds (MFs) were net buyers of Rs 67.40 crore on Wednesday. MFs made purchases of Rs 548.80 crore and sales of Rs 481.40 crore.