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Securitization, bank vigilance, leverage and sudden stops

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  • Patir, Assaf
Abstract
Accounts of the recent financial crisis claim that the practice of securitizing bank loans had led banks to be less vigilant in their lending habits. Securitization, the argument goes, gives the originators of the loans worse incentives to screen potential borrowers and monitor them as compared to traditional direct lending. But, unless investors are pricing securities irrationally, wouldn't contract theory suggest that banks should always prefer the contract that allows them to commit to higher vigilance? This paper addresses this problem by introducing a model in which securitization leads to laxer lending standards, even though it is chosen optimally by banks and investors. I construct a model where investment is performed through intermediaries (banks) that choose the volume of lending and a variable level of effort in screening potential borrowers, set the lending standards, and can finance their activities either by eliciting deposits or selling securities. Securitization allows the banks to credibly communicate to investors information about the borrowers, which depositors cannot access. Securitization has two effects: at fixed leverage, securitization gives banks better incentives to screen borrowers and leads to higher lending standards; however, it also allows banks to choose a higher level of leverage, which in turn degrades the screening effort. In equilibrium, securitization leads to lower vigilance, but is still preferred because it allows the banks to intermediate more funds. Paradoxically, the method of finance that allows banks to better communicate information about borrowers leads in equilibrium to less information being produced. The model also provides a natural explanation for why securitization is not observed below a strict credit rating cutoff (FICO 620), and why securitization activity can discontinuously stop as a continuous function of overall economic conditions.

Suggested Citation

  • Patir, Assaf, 2017. "Securitization, bank vigilance, leverage and sudden stops," MPRA Paper 81463, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:81463
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    References listed on IDEAS

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    More about this item

    Keywords

    securitization; leverage; banks; SPV; MBS; sudden stops;
    All these keywords.

    JEL classification:

    • E22 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Investment; Capital; Intangible Capital; Capacity
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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