A
McClellan Oscillator
McClellan Oscillator
Image 1 A market breadth indicator that is based on the difference between the number of advancing and declining issues on the NYSE. Primarily for short and intermediate term trading.
To calculate subtract a 39 day EMA of advancing issues - declining issues from a 19 day EMA of advancing issues - declining issues.
(19 Day EMA of Advances - Declines) - (39 Day EMA of Advances - Declines)

Image 2 Usually, a small number of stocks making large gains characterizes a weakening bull market. This gives the perception the overall market is healthy but in reality is not as rising prices are being driven by a small number of stocks. Conversely, when a bear market is still declining, but a smaller amount of stocks are declining, an end to the bear market may be near.


Breadth of Market

Advance/Decline Line


EMA

McLellan Summation Index

Technical analysis