India's largest bank, HDFC Bank, is facing unprecedented turmoil following the sudden resignation of its part-time chairman, Atanu Chakraborty, on March 18. His resignation has drawn attention to issues of 'values and ethics' which he claims are being ignored by the bank's management, a charge that has been flatly denied by the bank. The market has reacted sharply to his resignation, resulting in a staggering drop of over 1 lakh crore rupees in HDFC Bank's valuation within just three days. The bank's shares have fallen nearly 8%, with an additional 2% drop recorded on Friday alone, although its overall market cap still exceeds 12 lakh crores.