text: where can i find a list of the amount shares traded on margin per company?   i don't think you will find shares traded on margin as a category.   short sales are listed in barron's, which is an excellent source for data and ideas. stock is shorted only in a margin account.  futures on stocks are also traded only in a margin account.   your question doesn't make a lot of sense, and you don't say why you're asking it.   "margin per company?"  do you mean per brokerage? do you mean per stock? do you mean per exchange?  i can't imagine, even if you were able to obtain this info, how this would be beneficial to you, or to anyone to answer it for you.  you have to ask a valid question before you get an answer