Risultati della ricerca
Creator: Supel, Thomas M. Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 006 Abstract:
Previous work on discrete time portfolio selection models encompassed (a) transaction's costs, and (b) uncertainty about cash flows during the first (and only) period. This paper extends these models by considering uncertainty about asset yields in the second period and the optimal strategy for portfolio selection over a two-period horizon. Among the implications are i) the optimal initial portfolio is, in general, diversified and contains more short-term assets than the myopic investor's portfolio, and ii) the shape of the mean-variance locus ensures diversification for all (two-moment) types of investors, except certain forms of risk lovers. Other partial derivatives are investigated.
Working paper 6 is based largely on chapter 3 of Supel's University of Minnesota Ph.D. dissertation, "A two-period balance sheet model for banks."
Parola chiave: Cash flow, Portfolio diversifying behavior, Optimal strategy, and Diversification Soggetto: D81 - Criteria for Decision-Making under Risk and Uncertainty and G11 - Portfolio Choice; Investment Decisions
Creator: Koijen, Ralph S. J., Nieuwerburgh, Stijn van, and Yogo, Motohiro Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 499 Abstract:
We develop a pair of risk measures, health and mortality delta, for the universe of life and health insurance products. A life-cycle model of insurance choice simplifies to replicating the optimal health and mortality delta through a portfolio of insurance products. We estimate the model to explain the observed variation in health and mortality delta implied by the ownership of life insurance, annuities including private pensions, and long-term care insurance in the Health and Retirement Study. For the median household aged 51 to 57, the lifetime welfare cost of market incompleteness and suboptimal choice is 3.2% of total wealth.
Parola chiave: Health insurance, Portfolio choice, Life insurance, Life-cycle model, and Annuities Soggetto: G11 - Portfolio Choice; Investment Decisions, D14 - Household Saving; Personal Finance, I13 - Health Insurance, Public and Private, and D91 - Micro-Based Behavioral Economics: Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making
Creator: Wallace, Neil Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 024 Abstract:
In "Liquidity Preference as Behavior Towards Risk," Tobin suggests that risk aversion and expected utility maximization can provide a rigorous foundation for an equilibrium demand for money. In Tobin's model, money plays a risk reducing role in individual portfolios. This note considers whether a general equilibrium stochastic model can produce equilibrium yield distributions that allow money to play that role if money does not appear directly as an argument in the utility or production functions of the economy. The model examined, a stochastic production variant of Samuelson's model of overlapping generations, cannot produce such yield distributions.
Parola chiave: Risk aversion, Stochastic, and Monetary economy Soggetto: E41 - Demand for Money, C51 - Model Construction and Estimation, and G11 - Portfolio Choice; Investment Decisions
Creator: Glosten, Lawrence R., Jagannathan, Ravi, and Runkle, David Edward Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 505 Abstract:
Earlier researchers have found either no relation or a positive relation between the conditional expected return and the conditional variance of the monthly excess return on stocks when they used the standard GARCH-M model. This is in contrast to the negative relation found when other approaches were used to model conditional variance. We show that the difference in the estimated relation arises because the standard GARCH-M model is misspecified. When the standard model is modified allow for (i) the presence for seasonal patterns in volatility, (ii) positive and negative innovations to returns to having different impacts on conditional volatility, and (iii) nominal interest rates to affect conditional variance, we once again find support for a negative relation. Using the modified GARCH-M model, we also show that there is little evidence to support the traditional view that conditional volatility is highly persistent. Also, positive unanticipated returns result in a downward revision of the conditional volatility whereas negative unanticipated returns result in an upward revision of conditional volatility of a similar magnitude. Hence the time series properties of the monthly excess return on stocks appear to be substantially different from that of the daily excess return on stocks.
Parola chiave: Stock market, Rate of return, Risk, Asset valuation, Return rate, and Stocks Soggetto: G12 - Asset Pricing; Trading Volume; Bond Interest Rates and G11 - Portfolio Choice; Investment Decisions
Creator: Guvenen, Fatih, Schulhofer-Wohl, Sam, Song, Jae, and Yogo, Motohiro Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 546 Abstract:
The magnitude of and heterogeneity in systematic earnings risk has important implications for various theories in macro, labor, and ﬁnancial economics. Using administrative data, we document how the aggregate risk exposure of individual earnings to GDP and stock returns varies across gender, age, the worker’s earnings level, and industry. Aggregate risk exposure is U-shaped with respect to the earnings level. In the middle of the earnings distribution, aggregate risk exposure is higher for males, younger workers, and those in construction and durable manufacturing. At the top of the earnings distribution, aggregate risk exposure is higher for older workers and those in ﬁnance. Workers in larger employers are less exposed to aggregate risk, but they are more exposed to a common factor in employer-level earnings, especially at the top of the earnings distribution. Within an employer, higher-paid workers have higher exposure to employer-level risk than lower-paid workers.
Soggetto: D31 - Personal Income, Wealth, and Their Distributions and G11 - Portfolio Choice; Investment Decisions
Creator: Lagos, Ricardo and Rocheteau, Guillaume Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 375 Abstract:
We investigate how trading frictions in asset markets affect portfolio choices, asset prices and efficiency. We generalize the search-theoretic model of financial intermediation of Duffie, Gârleanu and Pedersen (2005) to allow for more general preferences and idiosyncratic shock structure, unrestricted portfolio choices, aggregate uncertainty and entry of dealers. With a fixed measure of dealers, we show that a steady-state equilibrium exists and is unique, and provide a condition on preferences under which a reduction in trading frictions leads to an increase in the price of the asset. We also analyze the effects of trading frictions on bid-ask spreads, trade volume and the volatility of asset prices, and find that the asset allocation is constrained-inefficient unless investors have all the bargaining power in bilateral negotiations with dealers. We show that the dealers’ entry decision introduces a feedback that can give rise to multiple equilibria, and that free-entry equilibria are generically inefficient.
Parola chiave: Asset prices, Execution delay, Liquidity, Trade volume, Bid-ask spread, and Search Soggetto: G11 - Portfolio Choice; Investment Decisions, G21 - Banks; Depository Institutions; Micro Finance Institutions; Mortgages, and G12 - Asset Pricing; Trading Volume; Bond Interest Rates
Creator: Bocola, Luigi and Lorenzoni, Guido Series: Staff report (Federal Reserve Bank of Minneapolis. Research Department) Number: 557 Abstract:
We study financial panics in a small open economy with floating exchange rates. In our model, bank runs trigger a decline in domestic wealth and a currency depreciation. Runs are more likely when banks have dollar debt. Dollar debt emerges endogenously in response to the precautionary motive of domestic savers: dollar savings provide insurance against crises; so when crises are possible it becomes relatively more expensive for banks to borrow in local currency, which gives them an incentive to issue dollar debt. This feedback between aggregate risk and savers’ behavior can generate multiple equilibria, with the bad equilibrium characterized by financial dollarization and the possibility of bank runs. A domestic lender of last resort can eliminate the bad equilibrium, but interventions need to be fiscally credible. Holding foreign currency reserves hedges the fiscal position of the government and enhances its credibility, thus improving financial stability.
Parola chiave: Financial crises, Foreign reserves, Lending of last resort, and Dollarization Soggetto: E44 - Financial Markets and the Macroeconomy, G11 - Portfolio Choice; Investment Decisions, F34 - International Lending and Debt Problems, and G15 - International Financial Markets
Creator: Smith, Bruce D. (Bruce David), 1954-2002 Series: Working paper (Federal Reserve Bank of Minneapolis. Research Department) Number: 228 Abstract:
"Summary of Recommendations: . . . Repeal present control by the System over interest rates that member banks may pay on time deposits and present prohibition of interest payments by member banks on demand deposits." Milton Friedman (1960, p. 100) "I conclude that the over-all monetary effects of ceiling regulations are small and easy to neutralize by traditional monetary controls. The allocative and distributive effects are, however, unfortunate. The root of the policy was an exaggerated and largely unnecessary concern for the technical solvency of savings and loan associations." James Tobin (1970, p. 5) The regulation of deposit interest rates has received little support from economists. The same is true for the original rationale for such regulation: that bank competition for deposits generates inherent "instability" in the banking system. This paper develops an "adverse selection" model of banking in which this rationale is correct. Moreover, in this model instability in the banking system can arise despite the presence of a "lender of last resort," and despite the absence of any need for "deposit insurance." However, in the world described, the regulation of deposit interest rates is shown to be an appropriate response to "instability" in the banking system. Finally, it is argued that "adverse selection" models of deposit interest rate determination can confront a number of observed phenomena that are not readily explained in other contexts.
Parola chiave: Risk, Banking panics, Unregulated banks, Banking Act of 1935, Instability, Bank regulation, Banking Act of 1933, and Banking Act Soggetto: D82 - Asymmetric and Private Information; Mechanism Design, G21 - Banks; Depository Institutions; Micro Finance Institutions; Mortgages, G11 - Portfolio Choice; Investment Decisions, and E42 - Monetary Systems; Standards; Regimes; Government and the Monetary System; Payment Systems