We analyse a very rich and unique panel database which provides information on exports at the firm-product level. A stylised fact in the data is that many firms add as well as drop products from the export mix in any given year. Motivated by recent theory we investigate what determines the...

Firms adjust to differences in market size and demand uncertainty by changing the frequency and size of their export shipments. In our inventory model, transportation costs and optimal shipment frequency are determined on the basis of demand as well as inventory and per shipments costs. Using a...