Don’t Argue with the #NYSI — 2/8/21

So many stocks look the same, NIO, NVDA, MRNA:

This is why you don’t argue with the NYSI.

The NYSI short signal is the blue color-coding on this chart. Open equity per $10K traded is displayed in the white flag on the lower right.

Kennedy Gammage, the late great market timer, used to say “Buy when the market tells you, sell when the stock tells you.”

With a wink of his eye what he didn’t say was most often the stocks tell you at the same time as the market, and except for rare exceptions, one might as well sell at the same time.

That is what this story is about.

THE TRADING STRATEGY

Mr. Gammage’s market tools were the McClellan Oscillator ($NYMO) and the McClellan Sumation Index ($NYSI). The NYMO is a short term market-breadth indicator based on the New York Stock Exchange Advance/Decline line, and the NYSI is its longer-term brother.