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作者：Brown, KC; Dittmar, A; Servaes, H
作者单位：University of Michigan System; University of Michigan; University of London; London Business School
摘要：This article studies the determinants of the success of industry consolidations using a unique sample of firms established at the time of their initial public offering: roll-up IPOs. In these transactions, small, private firms merge into a shell company, which goes public at the same time. These firms deliver poor stock returns; their operating performance mimics that of comparable firms but does not justify their high initial valuations. However, if the managers and owners of the firms includ...
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作者：Adams, RB; Almeida, H; Ferreira, D
作者单位：Stockholm School of Economics; New York University; Universidade Nova de Lisboa
摘要：Executives can only impact firm outcomes if they have influence over crucial decisions. On the basis of this idea, we develop and test the hypothesis that firms whose CEOs have more decision-making power should experience more variability in performance. Focusing primarily on the power the CEO has over the board and other top executives as a consequence of his formal position and titles, status as a founder, and status as the board's sole insider, we find that stock returns are more variable f...
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作者：Polkovnichenko, V
作者单位：University of Minnesota System; University of Minnesota Twin Cities; Federal Reserve System - USA; Federal Reserve Bank - Minneapolis
摘要：The proliferation of novel preference theories in financial economics is hampered by a lack of non-experimental evidence and by the theories' additional complexity which has not been shown to be critical in applications. In this article I present arguments in support of preferences with rank dependency. Using the Survey of Consumer Finances data, I document two widespread patterns inconsistent with expected utility: (i) many households simultaneously invest in well-deversified funds and in poo...
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作者：Post, T; Levy, H
作者单位：Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; Hebrew University of Jerusalem
摘要：We use various stochastic dominance criteria that account for (local) risk seeking to analyze market portfolio efficiency relative to benchmark portfolios formed on market capitalization, book-to-market equity ratio and price momentum. Our results suggest that reverse S-shaped utility functions with risk aversion for losses and risk seeking for gains can explain stock returns. The results are also consistent with a reverse S-shaped pattern of subjective probability transformation. The low aver...
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作者：Aït-Sahalia, Y; Mykland, PA; Zhang, L
作者单位：Princeton University; National Bureau of Economic Research; University of Chicago; Carnegie Mellon University
摘要：In theory, the sum of squares of log returns sampled at high frequency estimates their variance. When market microstructure noise is present but unaccounted for, however, we show that the optimal sampling frequency is Finite and derives its closed-form expression. But even with optimal sampling, using say 5-min returns when transactions are recorded every second, a vast amount of data is discarded, in contradiction to basic statistical principles. We demonstrate that modeling the noise and usi...
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作者：Jiang, GJ; Tian, YS
作者单位：York University - Canada; University of Arizona
摘要：Britten-Jones and Neuberger (2000) derived a model-free implied volatility under the diffusion assumption. In this article, we extend their model-free implied volatility to asset price processes with jumps and develop a simple method for implementing it using observed option prices. In addition, we perform a direct test of the informational efficiency of the option market using the model-free implied volatility. Our results from the Standard & Poor's 500 index (SPX) options suggest that the mo...
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作者：Choe, H; Kho, BC; Stulz, RM
作者单位：University System of Ohio; Ohio State University; Seoul National University (SNU); National Bureau of Economic Research
摘要：We investigate whether domestic investors have an edge over foreign investors in trading domestic stocks. Using Korean data, we show that foreign money managers pay more than domestic money managers when they buy and receive less when they sell for medium and large trades. The sample average daily trade-weighted disadvantage of foreign money managers is 21 basis points for purchases and 16 basis points for sales. There is also some evidence that domestic individual investors have an edge over ...
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作者：Sung, JY
作者单位：University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital
摘要：This article presents a continuous-time agency model in the presence of adverse selection and moral hazard with a risk-averse agent and a risk-neutral principal. Under the model setup, we show that the optimal controls are constant over time, and thus the optimal menu consists of contracts that are linear in the final outcome. We also show that when a moral hazard problem adds to an adverse selection problem, the monotonicity condition well known in the pure adverse selection literature needs ...
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作者：Cocco, JF; Gomes, FJ; Maenhout, PJ
作者单位：University of London; London Business School
摘要：This article solves a realistically calibrated life cycle model of consumption and portfolio choice with non-tradable labor income and borrowing constraints. Since labor income substitutes for riskless asset holdings, the optimal share invested in equities is roughly decreasing over life. We compute a measure of the importance of human capital for investment behavior. We find that ignoring labor income generates large utility costs, while the cost of ignoring only its risk is an order of magni...
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作者：Chacko, G; Viceira, LM
作者单位：Harvard University; Harvard University; Center for Economic & Policy Research (CEPR); National Bureau of Economic Research
摘要：This paper examines the optimal consumption and portfolio-choice problem of long-horizon investors who have access to a riskless asset with constant return and a risky asset (stocks) with constant expected return and time-varying precision-the reciprocal of volatility. Markets are incomplete, and investors have recursive preferences defined over intermediate consumption. The paper obtains a solution to this problem which is exact for investors with unit elasticity of intertemporal substitution...
