Indian railway stocks experienced a significant rally, adding Rs 66,500 crore in market value over five days, driven by investor anticipation of the Union Budget and improved revenue signals from fare rationalization. Key companies like Jupiter Wagons and RVNL saw substantial gains. However, the rally paused, with stocks falling as investors booked profits and reports suggested modest budgetary growth for Indian Railways' capital expenditure, leading to caution despite underlying positive triggers.