The Indian stock market rallied for the fourth straight session on September 13. At 9.23 am, the Sensex traded at 60,454.35 points, up 339.22 points or 0.56 percent, while the Nifty traded at 18,040.85 points, up 104.50 points or 0.58 percent. Among the Nifty 50 companies, 47 advanced and the rest three declined this morning, National Stock Exchange data showed. Prior to last Thursday, the benchmark indices - Sensex and Nifty - fell for two sessions on the likelihood of aggressive rate hikes in the US to fight inflation as indicated by the US Federal Reserve.