This excerpt taken from the ITG 10-K filed Mar 15, 2005.
Revenues by productClient Site Trading Products
Client Site Trading Product revenues, which in 2003 and 2002 were only generated by our U.S. Operations, decreased 30%. Share volumes decreased 28% while our rates per share decreased 3%. More than 75% of the revenue decline resulted from a reduction in business with several high volume, low commission clients. During the second half of 2003, we began replacing our QuantEX and ITG Platform products with our next generation product offerings, Triton and Radical.