It's really a crap shoot when it comes to brokers...! Ameritrade refused to trade AND_ on Wed & Thu as I watched it run up 270+ % on Wednesday. Said they might have issues settling trades. Well, over 1.8 billion traded the last 5 sessions so I know they're lying...!
But yes, it's up the brokerage house what & when they trade any given stock in this arena. Merry Christmas & Happy Holidays to everyone so inclined...?
Scottrade won't let you place an order either without going directly through a broker. And then once you place an order you can't modify it without again going through a broker. Not a good sign.