A Look At The Euro And Dollar Using Bollinger Bands®

 | Feb 20, 2020 12:39AM ET

In 1980 John Bollinger came up with the formula called Bollinger Bands®.

Bollinger used a moving average with two trading bands above and below it.

Unlike a percentage calculation from a normal moving average, BB’s simply add and subtract a standard deviation calculation (a formula that measures volatility).

When stock prices continually touch the upper BB the prices are thought to be overbought; conversely, when they continually touch the lower band, prices are thought to be oversold, triggering a buy signal.

I like to use Bollinger Bands on monthly charts.