Subject: File No. SR-CboeBZX-2018-040
From: Rick King, MD
Affiliation: Military Physician

July 11, 2018

Please allow Bitcoin ETFs to operate in the US. The cryptocurrency market as a whole is innovative and promising. Younger people who've never cared about investing, care about Bitcoin. We need to be financial innovators and spearhead the next revolution. Allowing cryptocurrency based ETFs will go a long way towards ensuring accessibility of this new market to Americans and provide more options to develop a balanced financial portfolio. Thank you