Watch Inventories closely. You may at first think that a company with large Inventories is a good thing as they would be ready for any unexpected increase in sales, when in fact companies with large inventories may be a sign of poor efficiency in their retail, manufacturing, or general business processes.
When a company purchases products for retail, or items that will eventually be made into finished goods, this is money that is no longer cash - money that could be instead invested to gain a return. So instead of having cash invested that would be generating revenue on its own, the company would be buying items that will simply be stored. Even worse, these items would be taking up building space, which the company bought or leases and which is often heated or cooled.
Depending on the type of inventory, spoilage of the inventory may occur - and the cash the company spent on this inventory would be wasted.