Months of Inventory (MOI)

Another way to determine if it's a buyers or sellers market other then the Sales-to-active-listings-ratio or the Absorption Rate is counting the Month's inventory available.  In the case where there were 5000 units available for sale last month, and 1000 of those units sold:

5000 / 1000 = 5 months supply

or

1000 / 5000 = 20% Absorption Rate (Sales-to-active-listings-ratio)