Subject: File No. SR-NYSEArca-2021-90

Dear SEC,

I'm writing to support the conversion of Grayscale Bitcoin Trust (symbol: GBTC), currently the world's largest Bitcoin fund, to the first Spot Bitcoin ETF in the United States.

A Spot Bitcoin ETF would allow investors like me to:

• Diversify my investment portfolio into the world's most popular cryptocurrency
• Invest in a product that directly tracks the price of Bitcoin without having to hold Bitcoin
• Own crypto in the same way I own many other investable assets
• Additional thoughts: ________________________________________________________

I am a resident of the state of _____________________

Sincerely,