New Delhi, Oct 19 (UNI) Indian stock markets on Monday snapped their two-day winning streak and witnessed heavy selling. The market downturn came amid elevated crude oil prices, weak global cues and selling in private banking stocks following disappointing earnings. The total market capitalisation of all BSE-listed companies fell to Rs 4,68,80,280.67 crore as of 2:10 p.m., down from Rs 4,73,46,932.13 crore at Friday's close. Selling pressure intensified after a muted start, dragging the Nifty below the 22,900 mark to an intraday low of 22,845. Most of the sectoral indices also traded largely in the red. At close, the Sensex…