52-week low is the lowest price at which a stock has traded during the time period that equates to one year.

A stock’s beta is one easily available parameter which can be helpful as a gauge of a stock’s volatility relative to the broader market or a particular portfolio.

Volatility is an indicator of risk. In general, the higher the volatility, the riskier the portfolio or the stock is. The volatility of a security or portfolio relative to its benchmark is called beta.