[en] In the crude oil market the phenomenon of Long Memory can be easily identified with the help of the simple (but effective) methodology of Katsumi Shimotsu. The Exact Local Whittle estimator and two testing strategies provide a strong assessment of the phenomenon. We present evidences and we suggest a profit opportunity. Furthermore, the existence of Long Memory discloses an inefficient oil market. [/en]
Unité mixte de recherche 7235
