The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 63.05 crore in the futures & option segment on Monday.According to data released by the NSE, FIIs were net sellers of index futures to the tune of Rs 196.39 crore while bought index options worth Rs 330.67 crore. They were net sellers of stock futures to the tune of Rs 195.21 crore and sold stock options worth Rs 2.12 crore.As per data available on the Sebi website - FIIs were net sellers of stocks worth Rs 1,222.40 crore in the cash market on Friday. Mutual funds were net buyers of shares worth Rs 251.60 crore on the same day.