 This actually made the client more vulnerable to a heightened risk of ruin, with the losses flowing entirely to the bucket shop.In this situation, if the stock price should fall even momentarily to the limit of the client's margin (highly likely with thin, highly leveraged margins in volatile markets), the client instantly forfeits the entire cash investment to the shop's account.Margin trading theoretically gives speculators amplified gains, but trading in a bucket shop exposes traders to small market manipulations due to the shop's agency.