Subject: SR-CboeBZX-2018-040
From: Sami dos Santos

July 11, 2018

Dear Sirs, Good evening

Giving legitimacy to the subject of the CBOE ETF (Chigaco Board Options Exchange), it is of the utmost importance that the approval of these ETFs will provide greater security in the cryptocurrency market, such as greater liquidity, transparency and safe custody of the assets that will credibility for large institutional investors.

Sincerely,

Sami dos Santos