Polygon.io
A market data API, known mainly for US stock data.
Where it runs
Runs wherever your code runs.
Who it suits
Developers who need detailed market data in their own software, for research or backtesting. Orders go through a broker, not through this feed.
Same devices, other platforms
Trading one of these? Fund a prop account
VFunded is the house pick: simulated capital, four routes, up to 90% split, rules published before checkout. See VFunded routes.
Checked against the maker's own page, polygon.io, on 23 September 2026.