The Foreign Institutional Investors (FIIs) were net sellers to the tune of Rs 230.36 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 175.45 crore while bought index options worth Rs 82.59 crore. They were net sellers of stock futures to the tune of Rs 142.04 crore while bought stock options worth Rs 4.55 crore.As per data available on the Sebi website - FIIs were net buyers of stocks worth Rs 349.30 crore in the cash market on Friday. Mutual funds were net buyers of shares worth Rs 304.33 crore on the same day.