The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 749.13 crore in the futures & option segment on Wednesday.According to data released by the NSE, FIIs were net sellers of index futures to the tune of Rs 469.65 crore while bought index options worth Rs 76.70 crore. They were net sellers of stock futures to the tune of Rs 302.88 crore and sold stock options worth Rs 53.29 crore.As per data available on the Sebi website - FIIs were net buyers of stocks worth Rs 335.50 crore in the cash market on Tuesday. Mutual funds were net sellers of shares worth Rs 14.98 crore on the same day.