The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 230.08 crore in the futures & options segment on Monday.According to data released by the NSE, FIIs were net buyers of index futures to the tune of Rs 180.39 crore and bought index options worth Rs 449.95 crore. They were net sellers of stock futures to the tune of Rs 851.90 crore and sold stock options worth Rs 8.52 crore.