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SEC EDGAR Data vs Yahoo Finance Chart

Same instrument, two spec sheets — measured, not claimed.

APISEC EDGAR DataNEW—Yahoo Finance ChartNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic domain (U.S. government work)Unverified
Free tierFree — public government dataFree — limits not published
Rate limitMax 10 requests/second; descriptive User-Agent required (SEC fair-access policy)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

SEC EDGAR Data vs Yahoo Finance Chart: common questions

Which is more reliable, SEC EDGAR Data or Yahoo Finance Chart?

On our scheduled checks, Yahoo Finance Chart leads on measured uptime — SEC EDGAR Data at —% versus Yahoo Finance Chart at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do SEC EDGAR Data and Yahoo Finance Chart need an API key?

Neither needs a paid key — SEC EDGAR Data is callable with no signup, and Yahoo Finance Chart is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call SEC EDGAR Data and Yahoo Finance Chart from the browser?

Only SEC EDGAR Data is browser-friendly — it returns CORS headers over HTTPS. Yahoo Finance Chart needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are SEC EDGAR Data and Yahoo Finance Chart free for commercial use?

SEC EDGAR Data allows commercial use on its free tier, and Yahoo Finance Chart has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.