The price of any stock moves up and down like a wave. Trend and counter-trend. Even though they move up and down, on the whole, they move in one direction – up, down, or sideways.

The direction in which the price of a stock or a group of stocks or the stock market as a whole move is termed as a trend. The trend of a market signifies the movement of the stock prices, in any one direction compared to its historical prices.