Bollinger Band means a band plotted two standard deviations away from a simple moving average.
Since standard deviation is a measure of volatility, Bollinger bands regulate themselves to the market conditions. When the markets become more volatile, the bands widen (move further away from the average), and in less volatile periods, the bands contract (move closer to the average). The tightening of the bands is frequently used by technical traders as an early sign that volatility is about to increase strongly.
The nearer the prices move to the upper band, the more overbought the market, and the nearer the prices move to the lower band, the more oversold the market.
Bollinger recommends using a 20-day simple moving average for the center band and 2 standard deviations for the outer bands.
Trial and error is one way to determine an appropriate moving average length. A simple visual judgment can be used to determine the suitable number of periods. Bollinger Bands should encompass the majority of price action, but not all of it. After sharp moves, penetration of the bands is normal. If prices appear to penetrate the outer bands too regularly, then a longer moving average may be necessary. If prices rarely reach the outer bands, then a shorter moving average may be necessary.
Sharp price changes are known to happen after the bands have tightened and volatility is low. Investors should keep in mind that Bollinger Bands do not give any clue to future direction of prices. Direction must be determined using other indicators and aspects of technical analysis.
Even though Bollinger Bands can assist in generating buy and sell signals, they are not intended to determine the future direction of a stock. The bands were designed to augment other analysis techniques and indicators.
The Bollinger Bands indicator for this stock is currently pointing towards a neutral reading. The Bollinger Bands are either trading in between their overbought and oversold level or no other clear bullish or bearish signal or trend is evident. If you currently have a position in this stock, the Bollinger Bands indicator is advising to hold onto your position. If you are currently on the sidelines, waiting to buy this stock, then BullishInvestor.com encourages you to evaluate other technical indicators that may be offering a better indication of where this stock is headed. Even though Bollinger Bands can assist in generating buy and sell signals, they are not intended to determine the future direction of a stock. The bands were designed to augment other analysis techniques and indicators.