Stock market today, Sept. 15 -- India's benchmark indices, Sensex and Nifty, opened the week on a muted note Monday, tracking the cautious mood in Asian markets as investors awaited the U.S. Federal Reserve's policy decision, where a continuation of the easing cycle is widely expected. Optimism over potential progress in India's trade talks with Washington also influenced sentiment.

The S&P BSE Sensex inched up 46.95 points, or 0.06%, to close at 81,857.75, while the NSE Nifty 50 added 20.75 points, or 0.08%, to settle at 25,093.25. Earlier in the session, at 9:38 AM, the Sensex was down 60 points, or 0.07%, at 81,843, while the Nifty 50 slipped 27 points to 25,086.80.

"The market began the session on a cautious note, with Nifty opening...