The firms hide customer statistics from the public, but in the year 2000 state regulators in Massachusetts subpoenaed records which showed that after 6 months only 16% of day-traders made money.

• 做市商总是向大众隐瞒统计数据，2000年马萨诸赛州管理层的传唤记录说明，在半年内，只有16%25的日内交易者赚钱了。