“…The financial crisis highlighted the role mortgage contracts play in homeowners' ability to weather systemic shocks to housing markets. Since then, economists and policymakers have sought to design mortgage contracts and modifications to improve stability during widespread housing market downturns (Eberly & Krishnamurthy, 2014; Guren et al., 2017; Karamon et al., 2016; Piskorski & Tchistyi, 2017). But long before the financial crisis, the GSEs, FHA, and mortgage servicers were experimenting with mortgage modifications, and researchers were learning from them (Ambrose & Buttimer, 2000; Ambrose & Capone, 1996).…”