AU Small Finance Bank shares eroded investor wealth worth about ₹4,000 crore in just six hours of trading on Monday. This comes as shares closed 5.3% lower at ₹974.45 after hitting a day's low of ₹950.50. The shares were trading in the red after Haryana government de-empanelled the bank following IDFC First Bank's disclosure of a ₹590-crore fraud by employees.