When a stock's price touches or dips below the lower Bollinger Band, it may indicate oversold conditions and a potential rebound12. This is because the lower band represents the lower price volatility limit, and the price is considered oversold when it approaches this limit. In such cases, traders often look for opportunities to buy the stock, as it may be undervalued and due for a rebound.
For example, if a stock's price has been declining and touches the lower Bollinger Band, it could be a signal that the price has reached a level where it is likely to rebound. This is because the lower band is calculated based on the standard deviation of the stock's price, and the price tends to bounce back towards the average after it has fallen below the band12. Traders can use this information to make informed trading decisions, such as placing a buy order when the price touches the lower band.
However, it's important to note that Bollinger Bands should not be used as the sole basis for making trading decisions. They should be used in conjunction with other technical indicators and market analysis to confirm potential trading opportunities. Additionally, the effectiveness of Bollinger Bands can vary depending on the volatility and characteristics of the stock being analyzed.