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

Feb. 22, 2022



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. 

Please give investors the choice of the type of ETFs to invest in (Spot or Futures based). 

Sincerely, 
Carlos Alvarado