All four of the world's biggest banks by assets are Chinese, according to data compiled by Bloomberg. And dozens of others are not far behind, causing regulators, led by China's central bank, to expect an increased number of companies to be deemed systemically important financial institutions, people familiar with the matter told online news service Caixin. A designation along the lines proposed would make the firms subject to extra capital requirements. At least 50 of the country's largest lenders will initially be shortlisted.