The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 1,216.35 crore in the futures & options segment on Monday.According to data released by the NSE, FIIs were net sellers of index futures to the tune of Rs 391.60 crore and bought index options worth Rs 125.50 crore. They were net sellers of stock futures to the tune of Rs 960.50 crore and bought stock options worth Rs 10.25 crore.