From recent option sentiment readings we have reason to believe that after a fantastic “Santa Claus rally” the market is entering thin air territory - at least in the short term. To that we can add an important technical indicator: the McClellan Oscillator.
If you’re unfamiliar with it, it is simply a measure of underlying breadth and is calculated by taking the difference of advancing and declining issues and then using this net breadth to calculate 39 day and 19 day exponential moving averages. The oscillator is then calculated by subtracting the former by the latter.
You can calculate this oscillator for any market and for each it will display different characteristics but usually, +100 is considered overbought and -100 oversold.
Here is the McClellan Oscillator for the NYSE:
I would take this chart with a grain of salt because over the years, a larger and larger portion of the issues traded on the NYSE is attributed to non-common stock securities like bonds, CEFs, municipal bond funds, preferreds, etc. But even so, the McClellan Oscillator is off the charts!
And this is the McClellan Oscillator for the Nasdaq:
It is important to note that this technical indicator compliments the view that option traders provide because they are both short to medium term in nature. It wouldn’t make much sense using a long term indicator, like say, the Coppock Curve to confirm a short term indicator - or vice versa.
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