In some cases, a company might buy back its stock to make it less attractive to potential hostile acquirers. Companies can also choose to retire the shares, permanently reducing the number of outstanding shares. Given that treasury stock is a company's own stock that it has bought back from shareholders, the company essentially holds it as an asset on its balance sheet.
Is treasury stock different from common stock?
There are some key differences between treasury stock and common stock. When a company issues common stock, it's selling a piece of ownership to investors. Common stockholders have the right to vote on company matters, such as electing the board of directors. If a company chooses to distribute profits, common stockholders may receive dividend payments.