Nifty Bank index began today’s session with a gap-down at 59,542 versus yesterday’s close of 59,958. It is now hovering around 59,800, down 0.25 per cent.The advance-decline ratio stands at 6-8, showing a slight bearish bias. Union Bank of India (up 1 per cent) and IDFC First Bank (up 0.6 per cent) are the top gainers.On the other hand, Canara Bank (down 1.4 per cent) is the top loser followed by Kotak Mahindra Bank (down 1.1 per cent).Nifty PSU Bank is flat so far today whereas Nifty Private Bank is down 0 ...