“…This paper builds on a large literature that highlights the fact that the originate-to-distribute model of mortgage finance can give rise to a number of conflicts of interest (Ashcraft and Schuermann, 2008). Several studies have analyzed whether securitization gives rise to moral hazard in terms of originator screening incentives (Keys, Mukherjee, Seru, and Vig, 2010;Purnanandam, 2011;Keys, Seru and Vig, 2012;Bubb and Kaufman, 2014), as well as the observable risk characteristics of securitized loans and portfolio loans (Ambrose et al, 2005;Krainer and Laderman, 2009;Elul, 2011;Agarwal, Chang and Yavas, 2012;and Jiang, Nelson, and Vytlacil 2014b). Importantly, investors understand the misaligned incentives associated with securitization, and protect themselves from these frictions through contracting features (e.g., by requiring representations and warranties about loan quality), security design features (e.g., requiring higher subordination levels) or required risk premia (Begley and Purnanandum 2013).…”