How the lists are built
- Today, 5-day and 1-month compare the latest close with the close 1, 5 and 21 trading days earlier.
- YTD compares the latest close with the last close of the previous calendar year.
- Streak counts consecutive closes higher (+) or lower (−) than the day before.
- RS (relative strength) weights the 3-month return twice and adds the 6 and 12-month returns, then ranks every stock scanned from 0 to 99. A 90 means it beat 90% of the list.
Big one-day moves usually have a reason: earnings, guidance, an upgrade or a sector move. Big moves on heavy volume tend to matter more, so check the Volume × column, or the unusual volume screener.
Frequently asked questions
Why is a stock I know missing?
The screener scans about 600 large and popular US stocks and ETFs, not the entire market. Small caps and recent IPOs may not be in the list.
Which markets can it scan?
Four, picked with the Market buttons above the table. Crypto (the default) scans the 250 busiest USDT pairs on Binance. Crypto perps scans the 200 busiest USDT perpetual futures on OKX. Both are free public data and need no key. US stocks scans about 600 US stocks and ETFs with your own free Alpaca key, and CME futures scans about 25 front-month CME Group contracts (stock indexes, Treasuries, oil, gas, metals, grains, livestock, currencies and CME bitcoin) with your own free Massive key.
Why do stocks and futures need a key?
Stock and futures prices are licensed data, so a website can’t hand them out for free. Alpaca (for stocks) and Massive (for futures) give anyone a free data key. Your key is saved only in your browser and sent only to that provider. See how to get a free Alpaca key and how to get a free Massive key for futures.
Which stocks does it scan with an Alpaca key?
About 600 US stocks and ETFs: roughly the S&P 500, popular growth and momentum names, and around 75 of the most traded ETFs. The largest 135 load first; the rest follow automatically a few seconds later.
Is the data real-time?
Crypto and crypto perps are live from Binance and OKX, on daily candles that start at 00:00 UTC (today’s candle is still forming). Alpaca’s free stock data is 15 minutes behind the market, and Massive’s free futures plan is 8 hours delayed. With auto-refresh on, the table updates in place every minute (you can pick 30 seconds or 5 minutes, or turn it off).