The BSE benchmark Sensex today (Dec 9) recorded second biggest fall in a month by losing over 454 points on year-end selling by foreign funds in banking and realty sectors, amid rise in food inflation that could signal a possibility of interest rate hike. The benchmark Sensex, which had lost 285 points in last two trading sessions, tumbled by 454.12 points to 19,242.36, after dipping to 19,160.87 as financial and realty stocks continued to be battered.