Investment, consumption, and hedging under incomplete markets

• 成果类型: Article
• 署名作者: Miao, Jianjun; Wang, Neng
• 署名单位: Columbia University; National Bureau of Economic Research; Boston University; Hong Kong University of Science & Technology
• 刊物名称: JOURNAL OF FINANCIAL ECONOMICS
• ISSN/ISSBN: 0304-405X
• DOI: 10.1016/j.jfineco.2006.10.003
• 发表日期: 2007
• 页码: 608-642
• 关键词: real options; idiosyncratic risk; hedging; risk aversion; precautionary savings; incomplete markets

摘要

Entrepreneurs often face undiversifiable idiosyncratic risks from their business investments. We extend the standard real options approach to an incomplete markets environment and analyze the joint decisions of business investments, consumption/savings, and portfolio selection. For a lumpsum investment payoff and an agent with a sufficiently strong precautionary savings motive, an increase in volatility can accelerate investment, contrary to the standard real options analysis. When the agent can trade the market portfolio to partially hedge against investment risk, the systematic volatility is compensated via the standard CAPM argument, and the idiosyncratic volatility generates a private equity premium. Finally, when the investment payoff is a series of flows, the agent's idiosyncratic risk exposure alters both the implied option value and the implied project value, causing a reversal of the results in the lump-sum payoff case. (c) 2007 Published by Elsevier B.V.