Subject: Re: GTR ETFs, etc?
Google Sheets still access exchange data including Yahoo Finance (and others) behind the scenes through the Googlefinance function. You can get historical data for any time period with the command (admittedly somewhat cryptic) in a cell:

=query(GOOGLEFINANCE("YOURSYMBOL","PRICE",workday(today(),!ANEGATIVENUMBEROFLOOKBACKDAYS!),today(),"WEEKLY" OR "DAILY"))

FC