John James Butler, Successful Stock Speculation
“ When you sell stock short and the price goes up, you will have to pay a higher price for it. Therefore, to protect himself against the possibility of losing, your broker demands a payment from you just the same as you pay margin when you buy stock.Short selling is something that we do not recommend very much to our clients. We think it is not advisable to do any short selling as long as there are good opportunities to make money by buying; but when all bargains disappear, as they do sometimes, you must either sell short or else keep out of the market entirely. ”
