. "60"^^ . "1999Z"^^ . . . . . . "Tradebot Systems, Inc. is one of the largest high-frequency, computer trading firms in the US. Based in Kansas City, Missouri, they regularly account for 5% of the total trading volume in the US stock market. According to the founder, Dave Cummings, as of 2008, the firm \"typically held stocks for 11 seconds\", and \"had not had a losing day in 4 years\"."@en . "Tradebot Systems, Inc."@en .