I find it interesting that a brokerage company would purposely name itself after term used to describe a dubious trading arrangement.

Wikipedia defenition for "jitney":

• a method (considered fraudulent in most jurisdictions), whereby unscrupulous investors trade shares back and forth at pre-arranged prices to give a false impression of price and volume. This is also called circular trading.

• a legitimate arrangement whereby a broker who has direct access to an exchange executes trades on behalf of a broker who doesn't.