The BSE benchmark Sensex gained 65 points in early trade today, snapping a four-session losing streak, on emergence of buying by funds and retail investors. The 30-share barometer had lost nearly 620 points in the last four sessions. It recovered today by 65 points to 16,358 points with realty, metal and auto sector stocks leading the recovery. The wide-based National Stock Exchange index Nifty also moved up by 18 points to 4,947