Tutorial | How To Calculate "Flush Zones" Using ATRHoly sell-off Batman. Today we finally had some volatility, and a 2-3% down day in the stock indices. This range expansion seems like a perfect day to come back with another lesson on market tendencies and using ATR to calculate flush zones. What's a flush zone you ask? It's where the weak hands get flushed.
For this lesson, I'm using prior session lows as the levels to measure the zone, but you can apply this concept to any significant level. And remember, you can do this with any instrument. Try it in AAPL or BTCUSD or your favorite symbol.
