Domestic institutional investors (DIIs) were net buyers of Rs 332.65 crore (provisional) today, according to data released by BSE.While DIIs made gross purchases of Rs 1,391 crore, gross sales totalled Rs 1,058.35 crore.Foreign institutional investors (FIIs) were net buyers of Rs 175.78 crore today. While FIIs made gross purchases of Rs 3,324.70 crore, gross sales totalled Rs 3,148.92 crore.FIIs were net sellers of Rs 515.80 crore on Thursday, December 20, according to data released by Sebi today. While FIIs made gross purchases of Rs 2,561.20 crore, gross sales totalled Rs 3,077 crore.