Momentum
Momentum measures the percentage change in a stock price over a certain period of time. For example: “S&P 500 fell 10% this week”
Momentum is a highly significant measure for market participants. It helps gauge the size of a move, and provides psychological benchmarks. For example, when the market falls 20% it is considered to be in a “bear market”.
Momentum is used to gauge entry points and the strength of a trend
Momentum is the measure of percentage change in price over a certain period of time, from a day to a year or more.
The chart below shows the trailing PE for SPX in the last 40 years.
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Momentum is used to gauge whether the market is trending or conversely has reached overextended levels.