by Joanna White | Jan 19, 2017 | Trading
Bollinger Bands are a technical indicator created by renowned technical trader John Bollinger in the early 1980's. There are numerous publications, as well as John's website www.bollingerbands.com, that go into great detail on this popular tool used by many traders....
by Joanna White | Nov 9, 2015 | Options trading, Trading
The standard deviation of a particular stock or index will inform you about the possible movement over a period of time, based on probabilities. Key factors of standard deviation The higher the volatility, the bigger the standard deviation. The further out in time the...
by Tom Nunamaker | Jul 6, 2015 | Options trading, Trading
One measure of risk that is common for option traders is to use standard deviations of movement. I built a popular Standard deviation calculator to calculate the range of movement for a given set of numbers. It was accessed nearly 500 times in the past week! An option...
