The foreign institutional investors (FIIs) were net sellers to the tune of Rs 82.36 crore in the futures & option segment on Tuesday.According to data released on the NSE website, FIIs were net sellers of index futures to the tune of Rs 35.60 crore and they sold index options worth Rs 72.82 crore. They were net buyers of stock futures to the tune of Rs 27.69 crore while they sold stock options worth Rs 1.62 crore.As per data available on the Sebi website - FIIs were net sellers of stocks worth Rs 567.50 crore in the spot market on Monday. Domestic mutual funds (MFs) were net sellers of shares worth Rs 38.26 crore on the same day.