Subject: File No. SR-NYSEArca-2021-90
From: Michael Heisig
Affiliation:

May. 11, 2022

Dear SEC, Im writing to support the conversion of Grayscale Bitcoin Trust (Symbol: GBTC), currently the worlds largest Bitcoin fund, to the first Spot Bitcoin ETF in the United States. It would
 be way easier to track the price of Bitcoin. Sincerely, Michael Heisig