 His first noted case was in the summer of 1893, when bucket shops were becoming a rampant problem in the city, as these "bucket shops" specializing in stocks and commodity futures, as the terms of trade were different for each bucket shop.But, bucket shops typically catered to customers who traded on thin margins, even as low as 1%.The problem being that most bucket shops refused to make margin calls, so that if the stock price fell even momentarily to the limit of the client's margin, the client would lose his entire investment.