I am looking for a reliable data source provider for 1 to 320 minute S&P500 data. Or the ES mini contract.
Can anyone suggest a good source for this?
Good list of reviewed data sources from Caltech (includes Tickdata.com mentioned in previous posts).
I get this data (both the index and the Eminis) from TICKDATA.COM (I am not affiliated with this company). Reliable and high quality. I am sure there are many many satisfactory other sources.