Foreign institutional investors (FIIs) were net sellers of Rs 498.06 crore (provisional) on Tuesday, according to data released by BSE. While FIIs made gross purchases of Rs 3,161.79 crore, gross sales totalled Rs 3,659.85 crore.Domestic institutional investors (DIIs) were net buyers of Rs 351.16 crore on Tuesday. While DIIs made gross purchases of Rs 1,202.97 crore, gross sales totalled Rs 851.81 crore.FIIs were net sellers of Rs 1,845.60 crore on Monday, February 12, according to data released by Sebi on Tuesday. While FIIs made gross purchases of Rs 8,169.90 crore, gross sales totalled Rs 1,0015.40 crore.