Nifty futures has rolled around 70% vs 58% with respect to last month, and the open interest for the new October contract is higher by around 40 lkh implying cautious outlook or fresh short rollovers at around 10000 levels. BankNifty futures rolled at around 65% vs 68% compared to last month. However the open interest of BankNifty in this series is less by around 5 lkh, due to the short covering seen in the second half of the expiry day.