Explanation to Bollinger's Bands

Bollinger Bands was created by John Bollinger in the early 1980s, its purpose is to define price action relative to the assets highs and lows. This technical indicator is used to identify buy and sell signals and has proven very well in doing so.

Bollinger Bands consist of a set of three curves drawn in relation to securities prices. The middle band is a measure of the intermediate-term trend, usually a simple moving average, that serves as the base for the upper and lower bands. The interval between the upper and lower bands and the middle band is determined by volatility, typically the standard deviation of the same data that were used for the average. StockInvest.us uses Bollingers suggested 20 day average.

Middle Bollinger Band = 20-period simple moving average
Upper Bollinger Band = Middle Bollinger Band + 2 * 20-period standard deviation
Lower Bollinger Band = Middle Bollinger Band - 2 * 20-period standard deviation

BandWidth defines the current width of the band.
%b defines the current position within the band.

BandWidth = (Upper Bollinger Band - Lower Bollinger Band) / Middle Bollinger Band
%b = (Last - Lower Bollinger Band) / (Upper Bollinger Band - Lower Bollinger Band)

Live Samples:

Bollinger Bottleneck Buy Pattern 1
Bollinger Bottleneck Buy Pattern 2
Bollinger Bottleneck Sell Pattern

Bottlenecks in bandwidth indicate an upcoming change. Break up through the moving average line or continuous movements above the moving average line indicate a break up, and vice versa.

Source: http://www.bollingerbands.com

RSI low/high Values: [ 25 - 75 ]
* StockInvest.us uses dynamically calculated RSI max/min levels to determine when stock is oversold or overbought based on historical behavior.

FAQ

What is the symbol for Vocera Communications Inc Stock and on which exchange is it traded?
The symbol for Vocera Communications Inc is VCRA and it is traded on the NYSE (New York Stock Exchange).

Should I buy or sell Vocera Communications Inc Stock?
Vocera Communications Inc holds several positive signals, but we still don't find these to be enough for a buy candidate. At the current level, it should be considered as a hold candidate (hold or accumulate) in this position whilst awaiting further development.

How to buy Vocera Communications Inc Stock?
Vocera Communications Inc Stock can be purchased through just about any brokerage firm, including online brokerage services.
Click here for our free guide on how to buy Vocera Communications Inc Stock.

What's the current price of Vocera Communications Inc Stock?
As of the end of day on the Aug 17, 2022, the price of an Vocera Communications Inc (VCRA) share was $79.13.

What is the 52-week high and low for Vocera Communications Inc Stock?
The 52-week high for Vocera Communications Inc Stock is $79.43 and the 52-week low is $44.04.
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About Vocera Communications Inc

Vocera Communications Vocera Communications, Inc., a mobile technology company, provides secure, integrated, and intelligent communication solutions enabling mobile workers in healthcare and other mission-critical environments. It also offers an enterprise-class communication platform that enables hands-free voice communication, secure text messaging, real-time patient and staff rounding, and integrations with approximately 70 clinical systems, including electronic he... VCRA Profile

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