In the aftermath of the financial crisis, mortgage originations recovered more slowly in areas where market share was concentrated among fewer lenders, according to a new study by Adonis Antoniades. The author is an economist in the monetary and economic department of the Bank for International Settlements. Antoniades used data from the Home Mortgage Disclosure Act to study loan applications, originations and lenders’ market share on a county-by-county level from 2006 through 2011 ...