The Foreign institutional investors (FIIs) were net sellers of Rs 132.21 crore in the futures & options segment on Friday.According to data released by the NSE, FIIs were net sellers of index futures to the tune of Rs 366.53 crore and bought index options worth Rs 406.38 crore. They were net sellers of stock futures to the tune of Rs 184.53 crore and bought stock options worth Rs 12.47 crore.