There was a notable surge in futures open interest for six stocks in the NSE F&O pack, contributing to a total increase in open interest of over 5% on December 4 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.
Source: https://economictimes.indiatimes.com/markets/stocks/news/biocon-among-6-fo-stocks-saw-a-high-increase-in-futures-open-interest/slideshow/125780708.cms