Subject: Release No. 34-83520; File No. SR-CboeBZX-2018-040
From: Gyula Korom
Affiliation:

Sep. 21, 2018

Dear SEC Committee, 




I am an investor in Bitcoin and planning to invest more, however I would like to have an investment environment that is relatively secure and free from exchange manipulations committed by the exchanges them selves against their own customers. 


Currently I do not see this. Although I am an advocate of ETF-s approved by the SEC in the future because opening institutional investors into the market is crucial for future growth, I would like to ask you to postpone your decision for 2019 regarding CBOE (Bitcoin) ETF and make clear requirements and guidelines for exchanges to be followed. 


I believe and additional 5-6 months would be needed for exchanges to work upon your guidelines and make the necessary steps to avoid such market manipulations.  


I would especially  like to highlight the obscure moves by some exchanges made by using "Theter" a supposedly USD backed crypto currency  the use of which  should only be approved  after a open audits. 


Until such USD based currencies exist, in my view it is highly questionable that  a healthy market environment can be maintained. 


Summarizing the above:  


1. Clear guidelines - requirements for exchanges.  
2. USD backed currencies audited  
3. If above conditions met supporting ETF in 2019 earliest. 


Thank you 


Kind regards, 


Gyula Korom