Subject: File No. 10-222

December 11, 2015

Dears Sirs:

Please approve IEX's application to open an exchange that will level the trading field by operating with a 350 microsecond electronic "speed bump" into the delivery of trading orders.

I am a small investor, and I do not appreciate large traders like Citadel LLC makings millions (billions?) by getting ahead of traders by a few microseconds.

The market is best served by having equal opportunity and a level playing field for all participants. Please do not be swayed the arguments of high speed traders who are milking profits from the trades of regular investors like me.

Regards,

John Grant, CFA