A man walks past the Kotak Mahindra Bank branch in New Delhi, India, September 6, 2017. REUTERS/Adnan Abidi

India's central bank approved ICICI Prudential AMC to acquire up to a 9.95% stake in four commercial lenders. The multi-bank clearance covers Kotak Mahindra Bank, CSB Bank, DCB Bank, and AU Small Finance Bank. The portfolio expansion follows parent ICICI Bank's regulatory filing on Wednesday.