- The open interest for Nifty futures decreased by 5.32% while for Minifty futures it decreased by 3.02% as the market closed at 6035.65 levels. - Nifty September futures closed at a premium of 18.15 points compared to 16.25 points in the previous session, while October futures closed at a premium of 34.95 points. - The put-call ratio increased slightly to 1.94 from 1.93. Implied volatility increased for both September and October series options.