Mumbai: Led by interest-rate sensitive stocks, the BSE Sensex on Tuesday jumped by nearly 189 points to a one-month high of 17,601.78 on hopes of interest rate cut and slew of economic reforms after Finance Minister P Chidambaram unveiled a roadmap to prop up growth.

After resuming higher in early trade, the BSE benchmark index kept on accumulating gains throughout the session as investors bought shares in auto, realty and banking sectors.