August 31 was the record day for an upgrade of PX Index base. The new base will be effective form September 24 till December 21. All Czech blue chips met the requirements, none of listing were excluded or added. The number of shares important for calculation of PX Index increased for CEZ (to 272,605,901 from 267,725,710), (1 521 CZK, 3,05%) (to 200,681,172 from 174,054,123), (1 668 CZK, 0,00%) (to 3,932,500 from 3,862,500) and for (3 125 CZK, 1,30%) (to 10,412,507 from 8,656,673).