Why don't Lenders renegotiate more home mortgages? Redefaults,self-cures and securitization

A leading explanation for the lack of widespread mortgage renegotiation is the existence of frictions in the mortgage securitization process. This paper finds similarly small renegotiation rates for securitized loans and loans held on banks' balance sheets that become seriously delinquent, in particular during the early part of the financial crisis. We argue that information issues endemic to home mortgages, where lenders negotiate with large numbers of borrowers, lead to barriers in renegotiation. Consistent with the theory, renegotiation rates are strongly negatively correlated with the degree of informational asymmetries between borrowers and lenders over the course of the crisis.     

Dynamic incentives and retirement

This paper examines multi-period compensation contracts when retirement is anticipated. Short-term contracts in long-term employment relationships are equivalent to a long-term renegotiation-proof contract. The dynamic of incentive rates is determined by (i) how and in which periods managerial effort affects the contractible performance measures; and by (ii) the time-series correlation of error terms in performance reports. The model explains why long-term investments can decrease while incentive rates increase as managers approach retirement. Earnings persistence is negatively associated to earnings-based incentive rates but, towards retirement, high earnings persistence implies increasing earnings-based incentive rates.     

Recurrent trade agreements and the value of external enforcement

This paper presents a theory of dynamic trade agreements in which external institutions, such as the WTO, play a central role in supporting credible enforcement. In our model, countries engage in ongoing negotiations, and, as a consequence, cooperative agreements become unsustainable in the absence of external enforcement institutions. By using mechanisms such as delays in dispute resolution and direct penalties, enforcement institutions can restore incentives for cooperation, despite the lack of coercive power. The occurrence of costly trade disputes, and the feasibility of mechanisms such as escape clauses, depend on the degree to which enforcement institutions can verify, and condition on, events that may lead to trade disputes.     

Renegotiation Design and Contract Solutions to the Hold-Up Problem

Abstract.  This paper surveys the literature on contractual solutions to the hold-up problem which has addressed the issue of how to design the optimal contractual arrangement to achieve efficient investments in the presence of contract incompleteness. Although scholars have argued that renegotiation design is a necessary condition to avoid the hold-up problem, some recent papers have seriously questioned this condition. We mainly show that renegotiation design remains a necessary condition to implement efficient investments.     

Securitization and distressed loan renegotiation: Evidence from the subprime mortgage crisis

We examine whether securitization impacts renegotiation decisions of loan servicers, focusing on their decision to foreclose a delinquent loan. Conditional on a loan becoming seriously delinquent, we find a significantly lower foreclosure rate associated with bank-held loans when compared to similar securitized loans: across various specifications and origination vintages, the foreclosure rate of delinquent bank-held loans is 3% to 7% lower in absolute terms (13% to 32% in relative terms). There is a substantial heterogeneity in these effects with large effects among borrowers with better credit quality and small effects among lower quality borrowers. A quasi-experiment that exploits a plausibly exogenous variation in securitization status of a delinquent loan confirms these results.     

劳动契约视角下的经营者人力资本定价研究

经营者人力资本定价是目前理论研究的热点与难点问题。基于对经营者人力资本构成的多维性和调用的主动性两个关键特征的考察 ,从劳动契约的微观角度对经营者人力资本定价进行分析 ,并充分考虑劳资双方的特定状态 ,进一步探讨影响经营者人力资本价格的权变因素 ,认为经营者人力资本定价是一个复杂的系统过程 ,应该从可重新谈判的动态角度把握定价的精度     

Reject and renegotiate: The Shapley value in multilateral bargaining

This paper investigates three distinctive and intuitive renegotiation bargaining protocols that all yield the Shapley value as the unique subgame perfect equilibrium outcome. These protocols, built on the multi-bidding procedure of Pérez-Castrillo and Wettstein (2001), allow more freedom in multilateral bargaining where rejected players can further negotiate and form coalitions. The self-duality of the Shapley value plays a key role in the second and third results. Moreover, these renegotiation protocols allow an actual play along the equilibrium path to restore the Shapley value in case of a ‘mistake’ made before.     

Biased procurement auctions

In a complex procurement a buyer may consider biasing the auction rules in order to account for differences in product characteristics offered by the sellers. This paper studies the gathering, disclosure and use of information about this bias. While we also describe the optimal procurement auction in our setting, the main focus of the paper is on the case where the buyer does not have commitment power. We find that without commitment full disclosure of the buyer’s preferences is optimal. Furthermore, lack of commitment distorts the buyer’s incentives to learn about its preferences: unlike the commitment case, without commitment the value of this information can be negative. Based on Chapter 3 of my Ph.D. dissertation at Stanford University. I gratefully acknowledge the support of a John M. Olin Dissertation Fellowship and a Melvin and Joan Lane Stanford Graduate Fellowship. Thanks to Pat Bajari, Tim Bresnahan, Vinicius Carrasco, George Deltas, Jonathan Levin, Paul Milgrom, Ilya Segal and an anonymous referee for valuable suggestions.     

Non-discriminating renegotiation in a competitive insurance market

A variant of the Rothschild-Stiglitz model of a competitive insurance market is considered, where each uninformed firm is allowed to renegotiate the contracts that its customers initially sign, subject to the restriction that renegotiated contracts be offered to all the firm's customers. Such non-discriminating renegotiation is shown to weaken the profitability of cream skimming to the extent that there exists a unique equilibrium outcome. This outcome is that of Miyazaki and Spence i.e., the incentive-compatible pair of zero-profit contracts, if efficient; and the incentive-compatible, zero-profit pair of contracts maximizing low-risk utility, otherwise.     

Debt,equity, and information

Most firms issue financial assets such as debt or equity (e.g. bonds or stock) to outside investors. While these financial assets differ greatly in their characteristics, their diversity has received little attention in the literature. Filling this important gap in the literature, this paper views debt and equity as financial contracts, and asks why they are optimal instead of other financial contracts. By endogenizing the bankruptcy process, this paper shows how debt and equity arise as a consequence of an optimal allocation of cash-flow rights and monitoring rights, and how equity leads to dividend signaling.