Is there a way to make short term investment gains from regular brokerage account to my sole propriety business income for 2024?

[DavidD66]

No, not if you are a sole proprietor (self-employed).  If you are a sole proprietor and had an investment account in the name of your business, it would be reported on your tax return as if it was in your name.  A sole proprietor reports business income and expenses on Schedule C as part of the personal tax return.  But there is no place to report capital gains and losses from a brokerage account as business gains or losses.