Should I pay off my Margin Balance with my existing HELOC loan?

I currently have $15k margin balance which I used to DCA into stocks (AMD, ABNB, GOOG, MSFT, etc). The interest rate on the margin is ~9%). Should I use my HELOC, with a interest rate of 4.5%, to pay off the entire margin balance?

I still have a good amount of $ left on the HELOC and I figure with the lower interest rate it would be smart to transfer some of the debt.

Thoughts?