Check out Pyth, if it has the data you’re looking for, it should be veri high quality and timely.
Ask HN: Where do you get your financial data?
11–18 of 18 posts
Re: Ask HN: Where do you get your financial data?
#12What asset classes are you looking for?
I’ve used Bloomberg Backoffice files in the past, and later went to work at Bloomberg to try and make that data more easily usable.
MarketQA had a product that can give you historical data as well, but tied more into the Reuters world.
Corporate actions are a complete pain, Bloomberg’s back office file data for the adjustment factors isn’t consistent with the data you can pull from a Bloomberg terminal.
The wider your coverage the harder it is to do this correctly.
If you then want historical intraday prices as well, this gets much more expensive and much more complicated to set up. My last job had an entire team trying to get all this right, and still got it wrong a lot.
Re: Ask HN: Where do you get your financial data?
#13I’ve tried many APIs and there’s always gaps in the data. I was working on a stock market API to scratch an itch (hotstoks.com) but now it’s in stealth mode just because all the data issues I was having. I’m using IEX and Yahoo finance.
Re: Ask HN: Where do you get your financial data?
#14Have you tried the obvious sources? Bloomberg, S&P, Nasdaq. Fintech isn't a cheap game. If you get your data from small data vendor startups, you risk getting poor fundamentals data. You don't want to waste time on debugging the calculations when you could be iterating. Some brokers like IB are also have a data vendoring side business. If you are really tight on cash, try Intrinio. No idea about their quality but the…
It is indeed, which is why we stopped after window-shopping Bloomberg and Nasdaq. Seems like it's hard to have cost-effective, high-quality data with and API that's amenable to bulk backfilling. We have actually looked at Intrinio! Specifically for options data. Again the problem was that the API is not setup for bulk, historical backfills.
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.
Re: Ask HN: Where do you get your financial data?
#15What asset classes are you looking for? I’ve used Bloomberg Backoffice files in the past, and later went to work at Bloomberg to try and make that data more easily usable. MarketQA had a product that can give you historical data as well, but tied more into the Reuters world. Corporate actions are a complete pain, Bloomberg’s back office file data for the adjustment factors isn’t consistent with the data you can pull…
We're mainly looking at publicly-traded US securities, including stocks, ETFs, and crucially, mutual funds. Many sources (looking at you, Polygon) don't publish price data for mutual funds. Haven't heard of MarketQA, will definitely check it out
Re: Ask HN: Where do you get your financial data?
#16Interesting. I didn't think it is a challenge until I came across this discussion.
Recently I saw this project on HN: https://openbb.co/ Venturebeat press release states that "The platform gleans its investment data via publicly available sources, among others that require an API key — these include Alpha Vantage, Financial Modeling Prep, Finnhub, Reddit, Twitter, Coinbase, the SEC, and many more." I haven't checked their git for data sources.
My question then is how do you build a data provider? Where do these data providers take their data that they sell, like Bloomberg?
Re: Ask HN: Where do you get your financial data?
#17What asset classes are you looking for? I’ve used Bloomberg Backoffice files in the past, and later went to work at Bloomberg to try and make that data more easily usable. MarketQA had a product that can give you historical data as well, but tied more into the Reuters world. Corporate actions are a complete pain, Bloomberg’s back office file data for the adjustment factors isn’t consistent with the data you can pull…
We're mainly looking at publicly-traded US securities, including stocks, ETFs, and crucially, mutual funds. Many sources (looking at you, Polygon) don't publish price data for mutual funds. Haven't heard of MarketQA, will definitely check it out
I’ve never really looked at at Mutual Fund data, since personally I use ETFs, and professionally I never had to work with Mutual Funds.
I have no idea if MarketQA has that data. I imagine Bloomberg does, but I couldn’t be sure since I never looked.
Stockevents is an iOS app I saw in HN that from a quick glance at seems to have MF data. I wonder where they source it from.
Re: Ask HN: Where do you get your financial data?
#18Bloomberg Terminal. Free account. For life.
God help me if I ever lose my login.