ODTE, Zero Days to Expiration (0DTE) Options

ODTE, 

https://www.tastylive.com/concepts-strategies/zero-days-0dte-options-explained

Zero Days to Expiration (0DTE) Options: What Are They & How Do They Work?

What Are Zero Days to Expiration (0DTE) Options?

Zero days to expiration (0DTE) options are option contracts that exist for a single trading session and expire on the same day that they are traded.

A 0DTE option could be a longer-term option that has reached the last day of its lifecycle, or it could be a specific option that’s listed only for a single day.

Interest in 0DTE options, and other short-dated options (5DTE or less) has grown significantly in recent years. For example, the New York Stock Exchange reported that 56% of all retail options volume is now in options with five or fewer days to expiration, as compared to about 35% in November 2019.