Sensex ends 2020 on a flat note, Nifty below 14K; HDFC, Maruti, Dr Reddy top gainers December 31st, 2020 Sensex ends 2020 on a flat note, Nifty below 14K; HDFC, Maruti, Dr Reddy top gainers December 31, 2020Technology Sensex ends 2020 on a flat note, Nifty below 14K; HDFC, Maruti, Dr Reddy top gainers December 31st, 2020