Market domination: tests applied to the Danish cement industry

We propose an economic interpretation of the definition of a dominant position used by the european court of justice (ecj). Then we apply co-integration techniques to test econometrically whether the sole danish producer of cement holds a dominant position. Import penetration tests show that its conduct is independent of import price and quantity, so it can act to a considerable extent independently of its competitors. We also test whether it can act independently of its customers and find that its demand is inelastic with respect to its price. It thus holds a dominant position on the relevant danish market.