HDFC Bank's part-time chairman Atanu Chakraborty, a former senior bureaucrat who assumed the role in 2021, resigned with immediate effect on March 18-19, 2026, citing ethical concerns. In his letter, he stated that 'certain happenings and practices within the bank' were not congruent with his personal values. The resignation wiped approximately $7 billion off the bank's market value, with shares falling over 5% — the biggest single-day drop since June 2024. Keki Mistry was appointed interim part-time chairman for three months. Subsequently, HDFC Bank fired three senior executives over alleged mis-selling of Credit Suisse's AT-1 bonds.