The most liquid stocks tend to be those with a great deal of interest from various market actors and a lot of daily transaction volume. Such stocks will also attract a larger number of market makers who maintain a tighter two-sided market. Illiquid stocks have wider bid-ask spreads and less market depth. These names tend to be lesser-known, have lower trading volume, and often also have lower market value and volatility. Thus the stock for a large multi-national bank will tend to be more liquid than that of a small regional bank.