Liquidity

Liquidity describes how easily something can be turned into cash, quickly and without pushing its price down in the process. The word is used in two related ways in investing: for a security, it means how easily shares can be bought or sold, and for a company, it means how comfortably the business can meet the bills coming due in the near term.

For a stock or bond, liquidity shows up in trading volume and in the bid-ask spread. A large company whose shares trade millions of times a day can be bought or sold in size with barely any effect on the price, while a thinly traded small stock may have a wide spread and few buyers, so selling a position can mean accepting a lower price or waiting days to get out. Liquidity tends to dry up in a market panic, when it is needed most, which is why an investor's ability to exit matters as much as the price on the screen.

For a company, liquidity is about cash on hand and assets that can be converted quickly, measured with liquid assets and ratios like the current ratio. A business can be profitable on paper and still run into trouble if its cash is tied up in inventory or receivables when a debt payment arrives. Checking both sides, how easily a stock trades and how well the company can cover its obligations, gives a fuller picture of how much room for error an investment carries.