While I am learning the Penny Stocking way...I am still trading on my tastyworks platform. I moved over from thinkorswim in January 2107 when tastyworks went live. Not sure if I need to add another broker for penny stocks. I did try to short one today, and the trade was rejected because of non available to short?? It was kind of odd, because I've never been rejected a trade before, unless I made a mistake. Anyways, I'm having fun!! NO DAYS OFF!!