New Delhi, Jan. 25 -- Downside momentum continued in the Indian stock market on Friday after a slight upside bounce on two previous sessions. The Nifty 50 index finished 114 points lower at the 23,090 mark, the BSE Sensex went down 329 points and closed at 76,190, whereas the Bank Nifty Index ended 232 points lower at 48,356. After Thursday's pullback rally, the Mid-cap and the Small-cap indices resumed their downward journey. The Nifty Mid-cap 100 plunged by 1.55%, while the Nifty Small-cap 100 plummeted 2.35%. This sharp fall in the mid and small-cap space was further reflected in the advance-decline ratio, which stood at 0.36 levels on the BSE, the lowest since 13 January. For January, the Nifty Small-cap Index is down by 9.5% against ...