Too-Systemic-To-Fail: What Option Markets Imply About Sector-wide Government Guarantees
AbstractInvestors in option markets price in a substantial collective government bailout guarantee in the financial sector, which puts a floor on the equity value of the financial sector as a whole, but not on the value of the individual firms. The guarantee makes put options on the financial sector index cheap relative to put options on its member banks. The basket-index put spread rises fourfold from 0.8 cents per dollar insured before the financial crisis to 3.8 cents during the crisis for deep out-of-the-money options. The spread peaks at 12.5 cents per dollar, or 70% of the value of the index put. The rise in the put spread cannot be attributed to an increase in idiosyncratic risk because the correlation of stock returns increased during the crisis. The government’s collective guarantee partially absorbs financial sector-wide tail risk, which lowers index put prices but not individual put prices, and hence can explain the basket-index spread. A structural model with financial disasters quantitatively matches these facts and attributes as much as half of the value of the financial sector to the bailout guarantee during the crisis. The model solves the problem of how to measure systemic risk in a world where the government distorts market prices.
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Date of creation: Jun 2011
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- Stijn Van Nieuwerburgh & Hanno Lustig & Bryan Kelly, 2011. "Too-Systemic-To-Fail: What Option Markets Imply About Sector-wide Government Guarantees," 2011 Meeting Papers 1285, Society for Economic Dynamics.
- Kelly, Bryan & Lustig, Hanno & van Nieuwerburgh, Stijn, 2012. "Too-Systemic-To-Fail: What Option Markets Imply About Sector-wide Government Guarantees," CEPR Discussion Papers 9023, C.E.P.R. Discussion Papers.
- G01 - Financial Economics - - General - - - Financial Crises
- G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
- G2 - Financial Economics - - Financial Institutions and Services
- G38 - Financial Economics - - Corporate Finance and Governance - - - Government Policy and Regulation
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