Reserves are portions of shareholders' equity set aside for specific purposes. There are several types of reserves including capital reserves, revenue reserves, and statutory reserves. Capital reserves cannot be distributed as dividends while revenue reserves can be. Statutory reserves are required by law. Reserves are used to purchase assets, pay legal settlements, and other expenses. Buybacks allow companies to repurchase their own shares from investors using free reserves or fresh issue proceeds. Bonus shares distribute additional shares to shareholders without payment using a company's retained earnings. Stock-based compensation provides employees shares or options, while earnings per share measures profit allocated to each share.