@article{Differentiated:680, recid = {680}, author = {Thurlow, Peter}, title = {Stockout Avoidance Inventory Behaviour with Differentiated Durable Products}, publisher = {Bank of Canada}, address = {1993}, pages = {1 online resource (v, 33 pages)}, abstract = {Stockout avoidance inventory models imply that firms maintain inventory stocks that are low -too low to be justified by the data. The reason is that these models are based on the representative agent paradigm. Thus, if one firm experiences a stockout then all firms do, and the cost of the stockout is simply the delay of the marginal sale by one period. In contrast, this study shows that, with heterogeneity, stockouts need not be universal, and that the cost of a stockout is therefore the permanent loss of a marginal sale to the competition. This suggests that firms may maintain large inventory stocks, a conclusion that has implications for the dynamics of prices, output and sales. In this paper a model is developed in which each firm sells a single, differentiated, durable product. A distribution over consumers’ preferences for the differentiated products exists. The stochastic element is a fad shock that affects the consumers’ preference for the differentiated attribute. Dynamic programming is used to derive decision rules for consumers and producers, and a closed-form solution is found. The results suggest that in the aggregate market, inventory stocks, which may be large, always exist, and yet the average price is always influenced by stockouts.}, url = {http://www.oar-rao.bank-banque-canada.ca/record/680}, doi = {https://doi.org/10.34989/swp-1993-9}, }