The nearest expiration date for S&P CNX NIFTY INDEX FUTURES is Feb 27, 2025.
Traders prefer to sell futures contracts when they've already made money on the investment, but still have plenty of time left before the expiration date. Thus, many consider it a good option to sell S&P CNX NIFTY INDEX FUTURES before Feb 27, 2025.
Open interest is the number of contracts held by traders in active positions — they're not closed or expired. For S&P CNX NIFTY INDEX FUTURES this number is 37.50 K. You can use it to track a prevailing market trend and adjust your own strategy: declining open interest for S&P CNX NIFTY INDEX FUTURES shows that traders are closing their positions, which means a weakening trend.