🔑 Get a free Finnhub API key at finnhub.io/register (no credit card).
With a key, all data loads reliably. Without one, the app uses Yahoo Finance via CORS proxies which may be unreliable.
🔑 Connect a Data Source
Stock Scanner Pro needs a free API key to fetch live market data.
Yahoo Finance's public API is no longer reliably accessible from browsers — a Finnhub key takes 2 minutes and is completely free.
Step 1: Open finnhub.io/register → sign up (no credit card) Step 2: Copy your API key from the Dashboard Step 3: Paste it below and click Save
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Ticker Analysis
Enter a symbol above or click any stock in the scanners.