The Bucharest Stock Exchange closed Monday's session higher by over 2% on most indices, and the total value of transactions amounted to 76.53 million RON (15.39 million euros).The transactions with shares exceeded 54.23 million RON (10.9 million euros), and the most liquid stocks on the regulated market were of Transilvania Bank, with exchanges of 13.21 million RON, followed by the shares of OMV Petrom, with 8.38 million RON, and of Hidroelectrica - 6.26 million RON.The main index of the Bucharest Stock Exchange, BET, which includes the 20 most traded companies listed on the Regulated Market, appreciated by 2.16%, up to 17,010.32 points.The BET-Plus index, which shows the evolution of the 43 most liquid stocks, closed up by 2.12%, the extended blue-chip BET-XT index, of the 25 most liquid stocks, went up by 2.04%, and the index of SIFs, BET-FI, appreciated by 0.97%.The BET-BK index, the yield benchmark of investment funds, registered an advance of 2.44%, while the BET-NG, which measures the performance of the ten energy and utility companies, closed up 1.77%.The BET AeRO index, which includes 20 representative companies on the AeRO market, appreciated by 2.32%.The best developments were registered by Prefab (+13.07%), Romcarbon (+9.35%) and Arobs Transilvania Software (+6.41%).On the other hand, the most important decreases were recorded by the shares of Promateris (-9.59%), Rompetrol Rafinare (-7.30%) and Altur (-5.88%).