Subject: File No. SR-CboeBZX-2018-040
From: Celalettin ULUBAY
Affiliation: expert manager engineer

September 30, 2018


I am an institutional investor and would like to invest in Bitcoin. But the current structure is not secure. That's why I want it to be regulated. In order to be regulated, you must give your consent. I want to make my investment with ETF.