I'm using and free API to test Tiingo intraday IEX DATA with nasdaq 100.
I would like to have more 1 minute data, say 1 or 2 years. Is that possible to upgrade by paying fees?
Btw, i found tsla and appl price are not adjusted .
Data from the IEX Exchange goes back to 2017. You will have to set the start and end date to get this data from back then. You can get this data using the free plan. The free plan is limited to 500 unique tickers of your choosing per month.
Intraday data is not split adjusted but EOD data is.