Overstock refers to an excess or surplus of goods or inventory that a company or individual has on hand. This can occur due to overestimating demand, purchasing too much of a particular item, or simply not being able to sell all of the products in a timely manner. Overstock can also refer to the act of intentionally stocking more items than needed in order to take advantage of bulk discounts or to prepare for potential future demand. While overstock can be beneficial in some cases, it can also lead to financial losses and storage issues if not managed properly.