Thursday was another dull trading on PSE. Activity increased just before close. CEZ rebounded from CZK 1,215 and closed almost flat at CZK 1,226. short covering on O2 CR pushed price more than 2% higher. O2 CR flirted with the CZK 500 level, but was not able to reach it. was the star of the day, after upgrade from to Buy from Hold. gained despite slightly worst than expected 1Q08 sales supported as usual by local financial group. Volumes were less than 50% of long-term averages.