The rules
- Supertrend (10, 3): bands 3 × the 10-day average true range (Wilder) above and below the bar’s midpoint, (high + low) ÷ 2.
- In an uptrend the line is the lower band, and it only moves up; in a downtrend it’s the upper band, and it only moves down.
- The trend flips to down when the close falls below the line, and to up when the close rises above it. Days since flip counts daily closes since then (0 = today).
- vs Supertrend: the close against the line. A small number in an uptrend means price is near the trailing stop.
Calculated in your browser from daily candles. Not investment advice.
Frequently asked questions
What are the Supertrend settings?
ATR period 10 and multiplier 3 on daily candles, the defaults on TradingView and most platforms. Crypto candles close at 00:00 UTC, so today’s flip can still change until the candle closes.
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.
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. Turn on auto-refresh next to the results to update the table in place every 30 seconds, minute or 5 minutes.