Dow theory is a technical analysis to analyse the stock price movement over several years. Used to identify the demand and supply of the stock. Used for deriving the trend either positive or negative. It does not explain the price behavior of the stock/securities
High Bottom – High Top is a buy signal
Low Bottom – Low top is a sell signal
Support and resistance is a concept that the movement of the price of a security will tend to stop and reverse at certain predetermined price levels.