TIIE Futures Contract is the most representative and liquid contract listed in the Mexican Derivatives Exchange. It represents more than 90% of the volume traded in MexDer.
This modification takes effect on June 1 of this year. At MexDer, consists of expanding the discounts for monthly trading volume, offering a 20% additional discount on the lowest fee in effect previously. At Asigna, it incorporates a scheme of scaled discounts that offers greater benefits to traders who increase their trading volume over the course of the month, allowing them to obtain discounts of up to 30%.
For more information;
http://www.mexder.com/MEX/Tarifas_Mexder.html
http://www.asigna.com.mx/ASG/HTML/frame_paginas_ingles.html?fees.html