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by melony 1506 days ago
No data vendor will give you bulk historical backfills cheaply because then they will be out of business.

I will give you some more names, go pouch a quant or one of their ex-data engineers and maybe you can learn more:

- Bloomberg

- Thomson Reuters

- FactSet

- Refinitive Eikon

There is a reason why so many fintechs are going crypto first. The underlying technology may not be sound but the open business model and accessibility makes innovation a lot easier than dealing with old school financial gatekeepers.