I find you a funny lad.
You have the unmitigated gall to post this drivel...
https://www.elitetrader.com/et/thre...it-against-td-ameritrade.325223/#post-4732720
Yet the majority of your posts are requesting help AND ANSWERS for your "portfolio margin exam".
Dude, if you are so inept at studying and seeking answers in either books/library texts, or the general internet, that you come here BEGGING for help in thread after thread for answers, then how can you be qualified to even have one lick of valid input in the thread you commented upon that I linked above? Seriously?
Because if you feel so qualified OPINE what you did in that thread, then your should be able to figure out the answers to that PM test you are trying to pass, ON YOUR OWN. You seem to be a smart lad...Or you just play one on TV?
If my broker makes more money on market orders than limit orders, well, sign me up for the crazy house! Because I have been doing it ALL WRONG! For years! Wow, just think of the back-door deals I could make with my broker! I just do limit orders, and they change it to market in the .00000000000000000000000000001 femtoseconds it takes for the order to get executed, and the broker makes an extra 50000-thousandths of a 100th of a penny on the transaction. Good golly miss molly!