The document provides a summary of derivative market activity in India for August 26, 2010. Key points include:
- Open interest for Nifty futures decreased by 2.74% while for Minifty futures it decreased by 12.37% as the market closed at 5462.35.
- Nifty August futures closed at a premium of 7.50 points.
- Implied volatility of at-the-money options increased from 15.50% to 16.50%.
- Rollover for Nifty, Minifty, and Bank Nifty futures was 59.11%, 51.87%, and 55.95% respectively.