Debt stock is a measure of the total amount of debt that a company or government has outstanding at any given time. It is calculated by adding up all the debt that is currently outstanding, including long-term and short-term debt. Debt stock can also include any other financial obligations, such as derivatives and loans. The debt stock is an important metric used by analysts to measure the overall financial health of a company or government. It is also used to calculate a company's leverage ratio, which is a measure of how much debt a company has relative to its total assets.