Thanks. You can get historical intraday data (5-minuute or hourly) for all stocks from several exchanges, in big zip files of CSV files, from Stooq, a Polish br

Thanks. You can get historical intraday data (5-minuute or hourly) for all stocks from several exchanges, in big zip files of CSV files, from Stooq, a Polish brokerage https://stooq.com/db/h/ https://stooq.com/db/h/ . Those files go back a few weeks and are updated daily, so you can periodically download them to accumulate historical intraday data.