Subject: File No. 10-222
From: James McHugh

December 17, 2015

Dear SEC,

Thank you for considering the approval of IEX. As an active trader/investor, I often experience quote fade and am not filled at the NBBO. Direct feeds from exchanges are much faster and link to more advanced machines than the SIP, providing ample opportunity for latency arbitrage for those best connected. IEX has measures in place to provide needed transparency and enhance fair competition in the market. This will be of considerable benefit to the vast majority of the investing public.

Sincerely,
James K McHugh