A body representing foreign portfolio investors (FPIs) has written to the Securities and Exchange Board of India (Sebi) seeking relaxation of rules related to block deals. Asia Securities Industry & Financial Markets Association (ASIFMA) has asked for extension of `time window' for block deals and relaxation of `order limit.' Block deal is a trade with a minimum quantity of 5 lakh shares or minimum value of Rs 5 crore, executed through a single transaction, on a special window. The window is open for only 35 minutes during morning trading hours. The transaction price of a share ranges from +1% to -1% of the previous day's closing or the current market price. These transactions take place on a delivery basis.Usually, block deal happens when two parties agree to buy or sell securities at an agreed price and inform the stock exchange. “We understand the Sebi is not in favour of introducing more flexibility for block trades, we continue to maintain that this is a majo...