The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 889.98 crore in the futures & options segment on Wednesday.According to data released by the NSE, FIIs were net sellers of index futures to the tune of Rs 533.28 crore and bought index options worth Rs 195.28 crore. They were net sellers of stock futures to the tune of Rs 556.03 crore and bought stock options worth Rs 4.05 crore.