New Delhi, March 19 -- The sharp crash in HDFC Bank shares following the resignation of part-chairman Antanu Chakraborty, citing differences over "values and ethics", has significantly eroded investor wealth as the overall market capitalisation of India's largest private lender briefly slipped below the Rs.12 lakh crore mark.

HDFC Bank share price crashed 8% to a 52-week low of Rs.772 on the BSE today, as against the last closing price of Rs.842.95. The investor sentiment had weakened significantly overnight as HDFC Bank ADRs tumbled as much as 7% after the bank informed about the resignation in a late-night filing.

At the day's low, HDFC Bank shares market capitalisation came in at Rs.11.88 lakh crore as against the last close of 12.96...