The nearest expiration date for Micro E-mini Russell 2000 Index Futures (Sep 2021) is Sep 17, 2021.
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 Micro E-mini Russell 2000 Index Futures (Sep 2021) before Sep 17, 2021.