Sounds like it will stay in the shared account regardless. It just depends if you have at least 9000 shares, minimum. That’s what I am reading from that invostopedia R/F/S article.
So.. if you have minimum 9000 shares, you will get 1 share for it. If you don’t make the 9000 share threshold you will be automatically chased out on January 14th when the split happens. That is my understanding