Some sites where one can download Index/Forex price history.
Additional information one can use with Strategies/Autotrading. One gets another and/or additional view of data/price movement by doing some calculation/filters on these sheets.
Apart from that one can use this data of the various Index related to day of the week/date of the month/month/etc. As you know the different Index funds behaves different depending on the day of the week/month etc etc.
Doing a comparison between the various Index funds also gives even more detail.
https://forexsb.com/historical-forex-data
https://firstratedata.com/i/index/NDX
https://marketstack.com/
https://tickstory.com/#features
https://www.dukascopy.com/swiss/english/marketwatch/historical/
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