management science (2013) 1-3 王素娟. summary methodology : theoretical research:4 empirical...
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Management Science (2013)1-3
王素娟
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Summary Methodology :
Theoretical research:4Empirical Research:2Experiment Research:1
Topic: Corporate governance:1Risk management 2 Capital asset pricing and portfolio theory :3Behavioral finance:1
Innovation:
updating (model)of old problem; new method of old problem; old method of new problem; new method of new problem
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Diversity and Performance
Feng Li, Venky Nagar
Management Science 59(3), pp. 529–544
Corporate governance
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Motivation Diversity: open to new ideas and opportunities Performance: Finance and operating
This empirical investigation is valuable because strong
theoretical arguments exist both in support of diversity and
against it.
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Methodology - Empirical Research DiversityAn organization’s stance on gay rights is likely to be a good proxy for its real attitudes toward diversity. Same-sexdomestic partnership benefit (SSDPB) policies
(Human Rights Campaign (HRC) http://www.hrc.org/)
Performance
future stock returns
The calendar portfolio approach
CRSP database
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Conclusion and Contribution
The results show that holding these firms upon their SSDPB initiation in a calendar portfolio earns a four-factor annualized excess return (alpha) of approximately 10%over the 1995–2008 sample period, beating 95% of all professional mutual funds in the United States.
The insight for management: SSDPB adopters also show significant improvement in operating performance relative to nonadopters.
Contribution : A measure of diversity Empirical Research
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Worst-Case Value at Risk of Nonlinear Portfolios
Steve Zymler, Daniel Kuhn, Berç Rustem
Management Science 59(1), pp. 172–188
Risk management
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Motivation and Contribution
VAR
WVAR
WPVaR WQVaR
portfolios containing long positions in European options expiringat the end of the investment horizon,
portfolios containing long and/or short positions in European and/or exotic options expiring beyond the investment horizon
non-convex, fails to satisfy the subadditivity property of coherentrequires joint probability distribution of the asset returns
it tends to be overpessimistic and thus may result in undesirable portfolio allocations when portfolios containingderivatives
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Contribution
The insight for management: Advances in portfolio optimization with
considerable downside risk allow for more tractable portfolio
optimization.
updating of old problem
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The Role of Experience Sampling and Graphical Displays on One’s Investment Risk Appetite
Christine Kaufmann, Martin Weber, Emily Haisley Management Science 59(2), pp. 323–340
Risk management
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Motivation
According to standard models of portfolio choice or lifetime
consumption, households should invest at least a small fraction of their
wealth into the stock market as soon as they start saving.(56% in the
United States, 36% in the Netherlands, 23% in Great Britain and
Northern Ireland, and 6% in Germany) Participation: financial professionals should provide clients
with tools that better explain risk-return profiles of investment
opportunities.
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Methodology
risk-presentation modes One’s Investment Risk Appetite
(i) numerical descriptions, (ii) experience sampling,(iii) graphical displays, (iv) combination of these
formats in the “risk tool.”
(i) risk-taking behavior, (ii) investors’ recall ability of
the risk-return profile of financial products
Decisions from description are based on explicitly stated probabilitiesassociated with outcomes. Decisions from experience are based on sampling possible outcomes, meaning that the underlying probabilities must be judged or inferred based on the observed evidence.
Methodology: Experiment
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Conciusion and contrubution
A risk presentation format that incorporates experience sampling and distributions of returns may help investors by increasing decision commitment, confidence, and recall ability as well as reducing known biases as the overestimation of the loss probability. These factors result in an increased willingness to accept risk in one’s portfolio.
The insight for management: Presenting fund performance graphically changes the perception of the desirability of the investment
Contribution: Comprehensive research of risk-presentation; Methodology: Experiment
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Solving Constrained Consumption–InvestmentProblems by Simulation of Artificial Market Strategies
Björn Bick, Holger Kraft, Claus Munk
Management Science 59(2), pp. 485–503,
Capital asset pricing and portfolio theory
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Motivation
Utility-maximizing consumption and investment strategies in
closed form are unknown for realistic settings involving portfolio
constraints, incomplete markets, and potentially a high number of state
variables.
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Contribution
The authors propose a numerical procedure that Combines the
abstract idea of artificial, unconstrained complete markets, well-
known closed-form solutions in affine or quadratic return models,
straightforward Monte Carlo simulation, and a standard iterative
Optimization routine (SAMS).
The insight for management: New approaches to solving consumption investment problems to near optimality allow for more efficient solution times.
Contribution :New approaches of old problem
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Market Crashes, Correlated Illiquidity, andPortfolio Choice
Hong Liu, Mark LoewensteinManagement Science 59(3), pp. 715–732
Capital asset pricing and portfolio theory
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Motivation
The recent financial crisis highlights several potentially important fundamental elements for optimal portfolio choice. First, event risks
such as a market crash may be significant; second, market Liquidity may dry up after a crash; third, the probability of another crash may increase after a crash; and fourth, other investment opportunity set parameters (e.g., market volatility) may also change after a crash.
The optimal trading strategy in the presence Of market crashes that can trigger changes in the investment opportunity set has not been studied in the existing literature.
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Contribution and conclusion
Contribution we develop a flexible portfolio choice model where market crashes can trigger switching into another regime with a different investment opportunity set. (updating of old problem) ConclusionsIn contrast to standard portfolio choice models, changes in the investment opportunity set in one regime can affect the optimal trading strategy in another regime even in the absence of transaction costs. The insight for management: Portfolio choice might change dramatically in the case of broad shifts in market prices.
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Intertemporal CAPM with Conditioning Variables
Paulo MaioManagement Science 59(1), pp. 122–141
Capital asset pricing and portfolio theory
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Motivation
ICAPM
Common to these papers is the assumption that the factor betas/risk prices in the expected return-beta representation are constant through time.
The beta/price of risk of aggregate cash-flownews is assumed to be time varying, the conditionalcash-flow beta is assumed to be linear in a statevariable, leading to a scaled ICAPM that containsthree factors: revisions in future aggregate cash flows (cash-flow news), revisions in future market discountrates (discount-rate news), and a scaled factor thatcorresponds to the interaction of cash-flow news andthe lagged state variable.
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Conclusions and contribution
The author finds that the scaled ICAPM performs well in general,and prices particularly well the momentum portfolios. It compares favorably with alternative asset pricing Models in pricing both sets of equity portfolios. Furthermore, the scaled factor is decisive to account for the dispersion in average excess returns between past winner and past loser stocks. The insight for management: A time-varying cash-flow beta/price of risk provides a rational explanation for momentum.
Contribution: Model updating ,nearer to realization
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Individual vs. Aggregate Preferences:The Case of a Small Fish in a Big Pond
Douglas W. Blackburn, Andrey D. Ukhov
Management Science 59(2), pp. 470–484
Behavioral finance
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Motivation
The relation between risk preferences of individual agents in the economy and the attitude toward risk in the aggregate is fundamental in financial economics. The asset-pricing literature has grown in two important directions. The first line of literature focuses on the aggregate market. ( explain fundamental aggregate market characteristics such as expected returns and volatility). The second line of literature focuses on the behavior of Individuals It is only by aggregating individual demands that we can determine how individual behavior impacts aggregate prices. Yet this is a critical gap in the literature. This paper makes several important statements regarding the relationship between the aggregate economy and the individuals supporting the economy.
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Conclusion and Contribution
we demonstrate that the difference between individual preferences
and aggregated preferences can be large.( risk seekers. can lead to an
aggregate economy that is risk averse. The converse is also true. (perfect
competition, the existence of budget constraints, and agent heterogeneity)
The insight for management: Understanding the relationship
between the preferences of individuals and the preferences of the
aggregate economy is crucial for understanding the connection between
the behavioral finance literature, which focuses on individual preferences,
and the asset-pricing literature, which focuses on aggregate prices.Contribution: new problem