Moody's Investor Services issued a report yesterday that said regulatory approval of Commonwealth Bank's acquisition of the remaining 67 per cent of Aussie Home Loans was credit positive. Moody's said the buy would strengthen the bank's position in the mortgage market. "The transaction will enhance CBA's ability to access the broker-originated segment of the mortgage market, which accounts for 43 per cent of the total market," the report said. "Controlling Aussie offers CBA a number of auxiliary benefits, particularly the ability to offer white-label Aussie-branded loans." Mega-mergers among Indian banks are under discussion, with the imprimatur of the country's government. One option being considered is a merger of IDBI Bank, Uco Bank and Bank of Baroda. Another option is the merger of Andhra Bank, the Oriental Bank of Commerce and Bank of India. Asian Banking and Finance magazine reports that there is also talk of consolidating the State Bank of India, the Bank of India and the Bank of Baroda, to create the world's largest bank. China Construction Bank, the work's second biggest lender, will establish a subsidiary in New Zealand, according to a Business Desk report. The bank informed the Hong Kong Stock Exchange that it would deploy NZ$50 million of capital to establish a base in Auckland.