Price crossing below upper Bollinger Band.
The upper Bollinger Band equals the 20-period Simple Moving Average plus two standard deviations of closing prices. The "crosses below" condition fires when price closes above the upper band on the prior bar and below it on the current bar — the exact bar of the breakdown. on the 1-Min timeframe, the 20-bar window covers roughly 20 minutes of trading, making this a very short-term, fast-reacting signal. The cross captures momentum reversing at the statistical edge; it says nothing about how far the reversal will travel.
Upper band cross-downs are most reliable in liquid, high-float stocks with no active news catalyst — conditions where mean reversion is more likely than trend continuation. The primary failure mode is band-walking: strong-trending stocks close above the upper band and stay there, pushing it higher; each cross-down is temporary and price resumes the move immediately. on the 1-Min timeframe, this is especially common during the first 30 minutes of the session when momentum is highest. A second failure is re-entry: price crosses below the band, consolidates briefly, then gaps above it again on fresh buying. Traders typically require a close below the middle Bollinger Band (the 20-period SMA) to confirm mean-reversion is actually in progress. For the simpler overbought signal, see RSI Overbought Fade. For the inverse setup, see Bollinger Lower Band Cross Up.
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This screener finds stocks where price has just crossed below the upper Bollinger Band on the 1-Min chart — a potential short-term exhaustion signal after an extended move. It currently matches 34 stocks. When price closes above the upper Bollinger Band and then retreats below it, the cross can mark the beginning of mean reversion back toward the 20-period average. Active day traders and scalpers use this as a fade entry trigger, particularly in stocks that have moved quickly into overbought territory. Also available on the 5-minute, 15-minute, and 1-hour timeframes.