This page has no backend of its own — market data comes through a
small free Cloudflare Worker that you deploy once (it keeps your
Alpaca API keys off the browser, which every real data provider
requires). Takes about 3 minutes the first time.
Go to dash.cloudflare.com, sign up free, open Workers & Pages → Create → Create Worker, give it a name, click Deploy.
Click Edit code, delete the default script, paste in worker.js from the download (open it in any text editor to copy it), click Deploy again.
Go to Settings → Variables and Secrets → Add. Add ALPACA_API_KEY and ALPACA_API_SECRET as Secrets (your free keys from alpaca.markets).
Copy your worker's URL (looks like https://your-name.workers.dev) and paste it below.
run a scan to populate the tape…
PATTERN-BASED SCREENER · NOT A PREDICTOR
Signal Scanner
Universe—
Last scan—
Ready.
Only shows stocks with at least 50 historical
days of evidence behind the number (small samples get filtered out entirely, not just
flagged) AND a real historical edge — a 5%+ or 10%+ gain, within 5 trading days, at
least 10% of the time this stock's setup looked like it does right now. Click any row
for the full breakdown.
Symbol
Price
Chance of +5% (5d)
Chance of +10% (5d)
Press Run Scan to find qualifying stocks.
Type a ticker and press Analyze — runs every check the scanner does, on just this one symbol.