Buying and Selling options for the same stock multiple times in a day?

External question — Personal Finance Stack Exchange Author: wonderful world Original post: https://money.stackexchange.com/questions/119313 License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/ Adaptation: HTML converted to plain text; contact email addresses removed. Is it normal that traders buy and sell options of the same stock on the same day multiple times? For example, in an event of a positive earnings release, the CALL options were bought and then sold it after an increase in a few hours. A negative news came out, bought another PUT option contract and sold it in the next hours? Are there any regulations from the SEC for such type of option trading? Is there any special license from SEC or online brokers like TDAmeritrade needed to trade options on a day to day basis?