Foreign institutional investors (FIIs) were net sellers of Rs 514.26 crore (provisional) today, according to data released by BSE.While FIIs made gross purchases of Rs 1,667.83 crore, gross sales totalled Rs 2,182.09 crore.FIIs were net buyers of Rs 191.50 crore on Thursday, May 10, according to data released by Sebi today. While FIIs made gross purchases of Rs 2,047.10 crore, gross sales totalled Rs 1,855.60 crore.Mutual funds (MFs) were net buyers of Rs 226.60 crore on Thursday. MFs made purchases of Rs 646.50 crore and sales of Rs 420 crore.