May 24 (Reuters) - Wall Street’s main indexes opened higher on Monday as higher oil prices lifted energy stocks, while investors geared up for key inflation readings later this week. The Dow Jones Industrial Average rose 46.0 points, or 0.13%, at the open to 34253.87. The S&P 500 rose 14.3 points, or 0.34%, at the open to 4170.16, while the Nasdaq Composite rose 86.2 points, or 0.64%, to 13557.212 at the opening bell. (Reporting by Shashank Nayar in Bengaluru; Editing by Maju Samuel) Our Standards: The Thomson Reuters Trust Principles.