Subject: File No. SR-NYSEArca-2021-90
From: Dalton Rosario, Ph.D.
Affiliation:

May. 09, 2022

Dear SEC members, 


As a long term GBTC shareholder via my IRA (since 2019), I support the conversion of GBTC to a spot ETF. As it is known, Europe already has approved multiple spot ETFs for Bitcoin. 



Thank you and best regards, 


Dalton Rosario, Ph.D. 
Retired, U.S. Army Research Laboratory