All-Time High/Low

The all-time high/low of a security is the highest/lowest intraday, split-adjusted levels that a security has traded at since its inception.

Investors might use these metrics to gauge performance of a certain security. For example, investors will typically be interested in a stock that is at all-time highs, because it might imply that the stock is currently outperforming the market or has news that is changing the outlook of the company.