Efficiency and Options on the Market Index
AbstractIn a static exchange economy, when all the endowments are issued as securities on a stock exchange, Pareto optimal allocations may be reached by trading options on the market index (see Breeden and Litzenberger (1978)). We extend this result when some of the risks cannot be exchanged on the market. Options on an appropriate index, which typically differs from the market index, depending on the correlation of the non-tradable risks with the exchanged securities, are still an appropriate tool to support a (constrained) efficient equilibrium. This suggests that the recent development of derivatives based on interest rates may be an efficient way to reach a Pareto optimal allocation of risks.
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Bibliographic InfoPaper provided by DELTA (Ecole normale supérieure) in its series DELTA Working Papers with number 95-17.
Length: 12 pages
Date of creation: 1995
Date of revision:
Publication status: Published in Economic Theory, 1999, vol. 14, pp. 227-236
FINANCIAL MARKET; RISK;
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- Baptista, Alexandre M., 2003. "Spanning with American options," Journal of Economic Theory, Elsevier, vol. 110(2), pages 264-289, June.
- Alexandre Baptista, 2000. "Options and Efficiency in Multiperiod Security Markets," Econometric Society World Congress 2000 Contributed Papers 0299, Econometric Society.
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