sdcoffey

We're working on an investment aggregator that tracks the value of our customers' portfolios over time. We've faced a bunch of challenges in getting public stock market data (live/historical prices, splits, etc). We're currently cobbling together a dataset from a few different sources (Polygon, IEX, etc), but it's been a massive pain*

I'm wondering if this is the case for other fintech devs. Does everyone face the pain of assembling their own financial datasets? Or do we have unique needs/a bad solution?

So HN, where do you all source your financial data?

* Our main challenges:

Data quality: - Ticker symbol changes (and CUSIP/ISIN changes/challenges) - Missing or wrong values for some days - Missing or incorrect splits Speed: - Tens of API calls that would be necessary to render one screen - Historical data syncing that would take days of API calls Burden: - Enterprise sales contracts instead of self-serve - Building and maintaining your own ETL pipeline to ingest data