On-hand stock is the number of units physically on the shelf. For a distribution center the on-hand stock is the number of units on-hand in the distribution center.  For a domestic company, the corporate on-hand stock (COHS) is the inventories physically on-hand in all the distribution centers.  For an international company the sum of all inventory on-hand in the international network of distribution centers is the global on-hand stock (GOHS).