Momentum investing involves a strategy to capitalize on the continuance of an existing market trend. It involves going long stocks ….. showing upward-trending prices and short the respective assets with downward-trending prices. Momentum investing holds that trends can persist for some time, and it's possible to profit by staying with a trend until its conclusion, no matter how long that may be. For example, momentum investors that entered the U.S. stock market in 2009 generally enjoyed an uptrend until December 2018.
I have heard and read stories of momentum investing nearly all of the 40