The 52-week high and low are the highest and lowest prices a stock has traded at over the past year, commonly shown alongside a stock’s current price as a quick reference for where it sits within its recent trading range. A stock trading near its 52-week high is close to its best price over the past year; one near its 52-week low is close to its worst. On their own, these figures describe price history, not whether a stock is cheap or expensive — that judgement needs valuation metrics like PE ratio or price-to-book ratio alongside them. Some investors use proximity to the 52-week high as a momentum signal, and others watch the 52-week low for potential value opportunities, but neither approach works reliably without checking the underlying fundamentals first.