Presidential Address: Friction

The sources of trading friction are studied, and simple, robust empirical measures of friction are provided. Seven distinct measures of trading friction are computed from transactions data for 1,706 NYSE/AMSE stocks and 2,184 Nasdaq stocks. The measures provide insights into the magnitude of trading costs, the importance of informational versus real frictions, and the role of market structure. The degree to which the various measures are associated with each other and with trading characteristics of stocks is examined.     

Presidential Address: Collateral and Commitment

Optimal dynamic capital structure choice is fundamentally a problem of commitment. In a standard trade‐off setting with shareholder‐debtholder agency conflicts, full commitment counterfactually predicts the firm would rely almost exclusively on debt financing. Conversely, absent commitment a Modigliani‐Miller‐like value irrelevance and policy indeterminacy result holds. Thus, the content of dynamic trade‐off theory must depend on the commitment technology. In this context, collateral is valuable as a low‐cost commitment device. Because ex ante optimal commitments are likely to be suboptimal ex post, observed capital structure dynamics will exhibit hysteresis and depart significantly from standard predictions.     

Presidential Address: Discount Rates

Discount‐rate variation is the central organizing question of current asset‐pricing research. I survey facts, theories, and applications. Previously, we thought returns were unpredictable, with variation in price‐dividend ratios due to variation in expected cashflows. Now it seems all price‐dividend variation corresponds to discount‐rate variation. We also thought that the cross‐section of expected returns came from the CAPM. Now we have a zoo of new factors. I categorize discount‐rate theories based on central ingredients and data sources. Incorporating discount‐rate variation affects finance applications, including portfolio theory, accounting, cost of capital, capital structure, compensation, and macroeconomics.     

Presidential Address: Investment Noise and Trends

During the past few decades, the fraction of the equity market owned directly by individuals declined significantly. The same period witnessed investment trends that include the growth of indexing as well as shifts by active managers toward lower fees and more index‐like investing. I develop an equilibrium model linking these investment trends to the decline in individual ownership, interpreting the latter as a reduction in noise trading. Active management corrects most noise trader–induced mispricing, and the fraction left uncorrected shrinks as noise traders' stake in the market declines. Less mispricing then dictates a smaller footprint for active management.     

Presidential Address: Liquidity and Price Discovery

This paper examines the implications of market microstructure for asset pricing. I argue that asset pricing ignores the central fact that asset prices evolve in markets. Markets provide liquidity and price discovery, and I argue that asset pricing models need to be recast in broader terms to incorporate the transactions costs of liquidity and the risks of price discovery. I argue that symmetric information‐based asset pricing models do not work because they assume that the underlying problems of liquidity and price discovery have been solved. I develop an asymmetric information asset pricing model that incorporates these effects.     

Presidential Address: The Corporation in Finance

To produce significant net present value, an entrepreneur has to differentiate her enterprise from the ordinary. To take collaborators with her, she needs to have substantial ownership, and thus financing. But it is hard to raise finance against differentiated assets. So an entrepreneur has to commit to undertake a second transformation, standardization, that will make the human capital in the firm, including her own, replaceable, so that outside financiers obtain control rights that will allow them to be repaid. A vibrant stock market helps the entrepreneur commit to these two transformations. The nature of firms and financing are intimately linked.     

Examining Investment Information Sources for Sophisticated Investors Using Cluster Analysis

In order to contribute to studies of sophisticated users of financial information, cluster analysis is applied to assess the degree of similarity in the use of information sources between and within two groups of sophisticated users. Interviews were conducted with 21 individuals working as investment analysts for stockbrokers and 12 individuals working for institutional investors. All interviews were based on one company operating in an industrial sector that was of prime interest to the interviewees. The study confirms the general conclusions of previous research on the respective sources of information, but demonstrates significant differences between investment analysts and institutional investors. The use of cluster analysis also reveals the deficiencies of concentrating on a hierarchy of information sources, and demonstrates that users employ a limited range of sources but use these in different clusters or groups. Investment analysts tend to use short-term information that is routinely received, whereas institutional investors actively seek information of a less short-term nature.     

Presidential Address: Pension Policy and the Financial System

In this paper, I examine the effect of pension policy on the structure of financial systems around the world. In particular, I explore the hypothesis that policies that promote pension savings also promote the development of capital markets. I present a model that endogenizes the extent to which savings are intermediated through banks or capital markets, and derive implications for corporate finance, household finance, banking, and the size of the financial sector. I then present a number of facts that are broadly consistent with the theory and examine a variety of alternative explanations of my findings.     

Presidential Address: Does Finance Benefit Society?

Academics’ view of the benefits of finance vastly exceeds societal perception. This dissonance is at least partly explained by an underappreciation by academia of how, without proper rules, finance can easily degenerate into a rent‐seeking activity. I outline what finance academics can do, from a research point of view and from an educational point of view, to promote good finance and minimize the bad.     

Presidential Address: The Cost of Active Investing

I compare the fees, expenses, and trading costs society pays to invest in the U.S. stock market with an estimate of what would be paid if everyone invested passively. Averaging over 1980–2006, I find investors spend 0.67% of the aggregate value of the market each year searching for superior returns. Society's capitalized cost of price discovery is at least 10% of the current market cap. Under reasonable assumptions, the typical investor would increase his average annual return by 67 basis points over the 1980–2006 period if he switched to a passive market portfolio.     

Presidential Address: Social Transmission Bias in Economics and Finance

I discuss a new intellectual paradigm, social economics and finance—the study of the social processes that shape economic thinking and behavior. This emerging field recognizes that people observe and talk to each other. A key, underexploited building block of social economics and finance is social transmission bias: systematic directional shift in signals or ideas induced by social transactions. I use five “fables” (models) to illustrate the novelty and scope of the transmission bias approach, and offer several emergent themes. For example, social transmission bias compounds recursively, which can help explain booms, bubbles, return anomalies, and swings in economic sentiment.     

Presidential Address: Debt and Money: Financial Constraints and Sovereign Finance

Economic analyses of corporate finance, money, and sovereign debt are largely considered separately. I introduce a novel corporate finance framing of sovereign finance based on the analogy between fiat liabilities for sovereigns and equity for corporations. The analysis focuses on financial constraints at the country level, making explicit the trade‐offs involved in relying on domestic versus foreign‐currency debt to finance investments or government expenditures. This framing provides new insights into issues ranging from the costs and benefits of inflation, optimal foreign exchange reserves, and sovereign debt restructuring.     

Presidential Address: Issuers, Underwriter Syndicates, and Aftermarket Transparency

I model strategic interaction among issuers, underwriters, retail investors, and institutional investors when the secondary market has limited price transparency. Search costs for retail investors lead to price dispersion in the secondary market, while the price for institutional investors is infinitely elastic. Because retail distribution capacity is assumed to be limited for each underwriter‐dealer, Bertrand competition breaks down in the primary market and new issues are underpriced in equilibrium. Syndicates emerge in which underwriters bid symmetrically, with quantities allocated internally to efficiently utilize retail distribution capacity.     

机构投资者与资本市场波动

本文对机构投资者如何引起和加剧金融市场波动的原因进行了分析,这些原因既有机构投资者自身的投资行为方面的,也有委托-代理问题所引起的,还有由投资者推动的,以及由监管和制度设计方面的缺陷所造成的问题。本文还对国际机构投资者投资新兴市场所引起的金融动荡进行了分析,并对如何引导机构投资者向有利于金融市场稳定的方向发展提出了建议。     

机构投资者与国债市场改革

从世界各国的实际情况来看，大多数国家政府债券的主要持有人都经历了由个人投资向机构投资的转变。我国国债机构投资主要是银行和非银行金融机构，表现出极大的偏向性和垄断性。我国应大力培育各类机构投资，推进国债市场改革。     

Do Stock Market Investors Overreact?

This paper investigates the evidence on the stock market overreaction hypothesis (ORH), which holds that, if stock prices systematically overshoot as a consequence of excessive investor optimism or pessimism, price reversals should be predictable from past price performance. The ORH stands in contradiction to the efficient markets hypothesis which is a cornerstone of financial economics. This study is unique in the overreaction literature because it is restricted to larger and better-known listed companies, whose shares are more frequently traded. This restriction more or less eliminates two alternative explanations to the overreaction hypothesis: it minimises the influence of bid-ask biases and infrequent trading, and reduces the possibility that reversals are primarily a small-firm phenomenon. The paper also investigates a third alternative explanation, namely that time-varying risk explains the reversal effect. The study employs unbiased methods of return computation and uses data from 1975 to 1991 for nearly 1,000 UK companies. Overall, the evidence appears to be consistent with the overreaction hypothesis, subject to certain qualifications.     

Momentum and Foreign Investors: Evidence from the Korean Stock Market

Abstract:

We examine whether the price impact of foreign investors on the Korean stock market from December 2000 to February 2007 generated a momentum phenomenon. In our empirical results, foreigners seem to have exerted a significantly positive impact on prices in “up” markets (periods of positive stock returns), but have had little impact on prices in “down” markets (periods of negative returns). We document that the impact of foreigners’ trades is concentrated in large companies. Most importantly, when the market is in the up state, the returns of stocks of large companies that were positively affected by foreign investors in the previous six-month period continue to increase in the subsequent six-month period. As a result, the subsequent six-month return on a past “winner” stock portfolio is significantly higher than that on a past “loser” stock portfolio. This brings to mind a momentum phenomenon that has been reported not to exist in the Korean stock market.