The SEC gives away every company's financials. Parsing them was the hard part

A financial data builder says the hardest part of using SEC filings is not finance, but cleaning and validating the data.

The article highlights major parsing pitfalls: silent corruption, mismatched fiscal calendars, reconstructed quarters, and mixed reporting periods.

It also notes that repeated figures across filings can be inconsistent, making reconciliation and normalization essential.

The takeaway: direct SEC filing data can be cheaper and more reliable than vendor feeds, but only if hidden quality issues are solved.