As of June 20, there was a notable surge in futures open interest for five stocks in the NSE F&O pack, contributing to a total increase in open interest of over 15% as compared to the previous trade. A significant uptick in futures open interest signifies a substantial growth in the number of active, unexpired futures contracts in a specific security. This uptrend reflects an increasing number of participants either initiating new positions or expanding the size of their existing positions within the futures market.