Subject: File No. SR-CboeBZX-2018-040
From: Mark Chen

August 9, 2018

Dear SEC,

I am very honored to write you on this.
As a very important innovation, Bitcoin is getting more and more recognitions and applications everyday in the world. US has always been a country encouraging and embracing new innovations which consequently make US the strongest nation in the world, good for US people and also the people of the world. I recommend you to approve this bitcoin ETF and it will help bitcoin adoptions and continuing innovations, which will be beneficial to the people in US and the world in the long run.

Thank you and best regards,

Chen

August 9, 2018