Subject: File No. SR-CboeBZX-2018-040
From: AHMET C AYKUT, MSc.GGIT,PMP,ITIL,PSM1,PSPO1,PBA
Affiliation: Senior GIS Expert

July 11, 2018

Hi,

I am a non-corporate investor of BTC.I believe BTC should be available as ETF. This can lower operating costs, enhance transparency and tax efficiency in taxable accounts.

BTC ETF is a natural next step in maturation as an asset and could invite the entrance of more retail investors into the crypto markets.We need wallets to trade BTCs today but this is not an efficient way to use BTC in real life.

ETFs are frequently traded and accesible via investors' accounts. They are highly transparent as well under insurance via SIPC. But BTC exchanges have no insurance and expose investors to potential fraud and theft.

Best Regards.