Price breaking down below the lower Bollinger Band after a period of low volatility (squeeze), confirmed by high volume.
Bollinger Bands (20, 2) place an upper and lower band at two standard deviations from a 20-period Simple Moving Average. Statistically, roughly 95% of closes fall inside the bands. A close below the lower band is an uncommon event -- it means price has pushed outside that 95% range to the downside. The volume filter (1.5x the 20-period average) is critical: without it, band breaks frequently reverse within one to two sessions. Volume above the threshold signals genuine selling pressure -- institutional or forced liquidation -- rather than thin-market drift. Together these two conditions isolate directional band breaks from routine noise. The squeeze context (when this fires after a narrow-band compression period) increases the signal quality further.
Traders use this on the Daily timeframe for intraday setups and on the daily for swing positioning. On shorter timeframes (1-min, 5-min), the same setup fires much more frequently but reversal rates are proportionally higher due to noise. The primary failure mode is the "band walk": in strongly downtrending stocks, price can hug the lower band for multiple bars while Bollinger Bands widen -- each close is technically below the lower band, but entering each bar means chasing a trend that has already moved. Wait for the first confirmed break, not subsequent bars in a walk. A second failure mode is fade entries in range-bound conditions: the break reverses hard when price has no fundamental catalyst driving the move. See Bollinger Squeeze Break Bull for the inverse setup. NR4 Squeeze and NR7 Squeeze screens can help identify compression precursors earlier.
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This screen finds stocks breaking below the lower Bollinger Band after a squeeze, confirmed by volume at least 1.5x the 20-period average. The Bollinger Band squeeze -- when bands contract to unusually narrow width -- represents a coiling of volatility. When price breaks below the lower band with heavy volume, it signals the squeeze resolved to the downside with real participation. Currently 2 stocks match. This screener targets short sellers and momentum traders looking for downside continuation candidates. Common search phrases: "Bollinger Band breakdown", "squeeze break short setup", "bearish volatility expansion stocks".