Buying put options on the day of expiry and the result

External question — Personal Finance Stack Exchange Author: wonderful world Original post: https://money.stackexchange.com/questions/117855 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. This article covers a trade of $270 Strike CALL expiring on December 6th . My questions are: Can you buy a put or a call on the day of expiration? What will be this trader's speculation? The US Jobs reports was announced in the morning and the market went up and the AAPL floated at $270 between 12:30 PM and 3:45 PM. The chart shows that price floated around $270 and closed at $270.71. Does that mean the trader lost the premium for those options?