Average Value Of Inventory (AVI) is a metric used to measure the average value of a company’s inventories over a given period of time. It is calculated by dividing the total value of the company’s inventory at the beginning of a period, plus any additional inventory purchased during that period, by the number of days in the period. AVI can be an important indicator of a firm’s efficiency since it reveals how well they are utilizing their available resources. As such, tracking changes in AVI over time can provide valuable insights into a company’s operations.