Today, the start of the last trading session of the calendar year, is likely to be mildly in the red. The SGX Nifty suggests that the Nifty could open at 10,506 with a loss of 3 points at the opening bell. The calendar year 2017 has been a historical one for our markets as the Nifty index has registered gains of about 28% and touched the magical mark of 10,500, while the BSE Sensex has surged about 27% and touched the landmark of 34,000.