In my experience there is no rhyme or reason to why TD does this. I too couldn't place the order. I am finally going forward with transferring all my stuff to E Trade right now. Whats more frustrating is they will lift the restriction eventually for no new reason as well. I had a nice order in for AND1 at .0012 that would not fill for no reason and held with multiple people on the phone then they eventually lifted it once it went up another couple hundred percent (I would have been up over 15k at the high). I was also in LDS* but at .003 and there was a guy on that board who said TD was restricting it when he was trying to buy 5 million in the trips. Not a good feeling. I have a friend who got screwed the same way during the MJ boom back in 2014 in a trade that would have yielded a massive gain. Everyone with Etrade says they have never had a problem buying any stock. Its frightening if your going to play pennies to not be able to get in. I hopped in MME* (which was a hard learning experience) the morning of March 7th at .0005 and it closed just the day up 2700%. Sick part here is it says it takes about 10 days for the process to be complete. Will be livid if the same thing happens again.