It is a fact that there is no any other word used more than stock in the production world. When we look at the literature, it is possible to see the majority of studies on stock compared to other subjects.

Well, why do businesses avoid holding stock? no company wants to keep their money in stock instead of new investments...

In all these directions, the importance of stock management in the world increased, especially after the Second World War, when the economic contraction was experienced. In particular, the success of Toyota, the founder of the production system that bears its name, has been achieved by focusing on stock management and keeping the customer service level high by reducing the above-mentioned stocks. In times of need, it was to stock only as much as needed and to produce as much as the customer's request. This success of Toyota later set an example for the American and European industries.

For a good stock management, the first application is making stocks classification. Particular attention has been paid to ABC stock classification. It is an important classification for inventory management as it helps the inventory manager to pay more attention to which inventory units.

In the globalizing business world, businesses can deliver their material supply and distribution activities to every part of the world. Customers want to receive their products quickly and reliably. If there is a delayed order, they can turn to other sources of supply. Therefore, in recent years, stock management has become one of the actors that will bring success in competition.

From another point of view, inventory management can be seen as a burden to the business. The money invested in stocks is going to make problem especially in companies that produce products.  In the same way, the absence of the raw material of a product create delivery problems to customer and cause problems.  In this respect, it is seen how important inventory management is. The businesses that realized the importance of stock management and production planning  survived and even grew  more by filling the place of other companies.