"ATH" stands for "All-Time High," a term commonly used in finance and investing. It refers to the highest price level that a particular asset, such as a stock or cryptocurrency, has ever reached in its trading history. Investors often monitor ATHs to gauge market performance and potential future price movements. When an asset reaches a new ATH, it can indicate strong demand and positive market sentiment. However, it can also lead to increased volatility, as traders may take profits or react to market changes. Understanding ATHs is essential for making informed investment decisions in markets like stocks and cryptocurrencies.