We study the intraday behavior of bid-ask spreads for actively traded CBOE options and for their NYSE-traded underlying stocks. We confirm previous findings that stocks have a U-shaped spread pattern; however, the options display a very different intraday pattern—one that declines sharply after the open, and then levels off. Our results suggest that both the degree of competition in market making and the extent of informed trading are important for understanding the intraday behavior of spreads.

This paper investigates the response of stock prices to dividend shocks in a bivariate model of stock prices and price-dividend spreads. Dividend process is modeled as the sum of a permanent component and a temporary component. By using the stock price valuation (present value) model, the two components are related to stock prices. The stock market responds significantly not only to permanent shocks to dividends, but also to temporary shocks to dividends. Furthermore, initial responses of stock prices to the temporary shocks are as strong as those to the permanent shocks. As a result, substantial variation in stock prices is due to the temporary shocks. This finding provides empirical support for the imperfect information hypothesis that emphasizes the failure of investors to clearly distinguish between the two components of dividends, and also suggests that the observed mean-reverting behavior of stock returns should be explained by incorporating a significant temporary component into stockprices. The price-dividend spreads are primarily accounted for by the temporary shocks to dividends, and respond strongly to them, suggesting that, in response to the temporary shocks to dividends, stock prices respond excessively relative to dividends.

This paper analyzes the relationship between tax heterogeneity and the behavior of stock prices and trading volume around the ex-dividend day within an equilibrium framework. We conclude that, even in a world without transaction costs, the price drop on the ex-day need not be equal to the dividend amount. Our model accounts for the higher market trading volume around the ex-day, and shows this to be a function of tax heterogeneity among traders. We show that the volume of trade around the ex-day contains information about investors' tax preferences above and beyond the information contained in the ex-day price alone. Consistent with the model's predictions, our empirical analysis reveals that as the risk associated with the ex-dividend day increases, or tax heterogeneity decreases, trading volume decreases.

This paper evaluates the conjecture that excess stock returns that have been documented around the announcement of corporate spin-offs represent, at least in part, the re-creation of value destroyed at the time of an earlier acquisition. We evaluate this question with a sample of spin-offs that originated as earlier acquisitions. At the time of the original acquisition, on average, announcement period returns to the bidder and the combined bidder and target firm are negative and significant. Additionally, announcement period returns at the time of the spin-off are negatively and significantly correlated with acquisition announcement period returns.

This study is an extension of Leland and Pyle's (1977) signaling model. It introduces, in addition to the retained ownership, the length of the holding period to which the owner commits in the prospectus as a signal of firm value. The length of the holding period is found to be a signaling mechanism that complements ownership retention. Depending on the information structure of the firm, the entrepreneur may prefer to commit to a holding period longer than the minimum required by securities regulations.

Restrictions on transaction price changes are a feature of many security markets. This paper analyzes the impact of such price continuity rules on price dynamics and examines possible rationales for their existence. Contrary to popular belief, continuity rules need not reduce price efficiency, although they do result in a redistribution of profits among traders and dealers. Indeed, continuity rules may enhance price efficiency because traders have greater incentives to gather costly information. We provide a new rationale for continuity rules besides the stated objective of stabilizing prices. In particular, we show that continuity requirements act to restrict dealers' expected profits from trading with liquidity traders. The results provide insights into the design of an “optimal” continuity rule.

Prior theoretical work on estimation risk generally has been restricted to single-period, returns-based models in which the investor must estimate the vector of expected returns but the covariance matrix is known. This paper extends the literature on parameter uncertainty in several ways. First, we analyze asymmetric parameter uncertainty in a model based on payoffs. Second, we explore the effects of both symmetric and asymmetric estimation risk on equilibrium asset prices when the covariance matrix for payoffs must also be estimated. Finally, we investigate the effects on equilibrium of asymmetric parameter uncertainty in a simple multiperiod model.

We use a no-arbitrage, cost-of-carry asset pricing model to show that the existence of cointegration between spot and forward (futures) prices depends on the time-series properties of the cost-of-carry. We argue that the conditions for cointegration are more likely to hold in currency markets than in commodity markets, explaining many of the empirical results in the literature. We also use this model to demonstrate why the forward rate forecast error, the basis, and the forward premium are serially correlated, and to develop econometric tests of the “unbiasedness hypothesis” (sometimes called the “simple efficiency hypothesis”) in various financial markets. The unbiasedness hypothesis is so prevalent in the finance literature that many tests for it have been developed. We examine four of the common tests and and use our cointegration results to demonstrate why each of these tests should reject the null hypothesis of unbiasedness. We find strong support for our hypothesis in the existing empirical literature.

Existing empirical studies of the put-call parity condition report frequent, substantial violations. An important problem in interpreting these results is that these studies all investigate American options. While some of these studies attempt to reduce the effects of possible early exercise on their tests, they cannot fully account for the effect of early exercise. Therefore, it is not possible to conclude from these studies whether, or to what extent, observed put-call parity violations are due to market inefficiency or due to the value of early exercise. We avoid the early exercise problem by testing put-call parity using European options. We find violations that are much less frequent and smaller than the studies using American options. Moreover, these violations reflect premia for liquidity (immediacy) risk.

This study analyzes bid-ask spreads surrounding announcements of open-market share repurchase programs for a sample of 248 announcements of repurchase programs by NYSE firms over the period January 1984 through June 1988. The sample includes 158 announcements of new programs and 90 announcements regarding continuations of already existing programs. Contrary to the theory that spreads increase surrounding the announcement of open-market share repurchase programs, with both univariate and multivariate tests that control for changes in volume, changes in stock price volatility, and changes in the level of stock price, we find no evidence of an increase in spreads surrounding announcements of open-market share repurchase programs.

The Capital Asset Pricing Model predicts that investors will hold diversified portfolios, but many households actually hold very few assets. The paper examines the asset pricing implications of one possible explanation for this phenomenon, fixed costs of holding assets. While earlier authors found the exact asset pricing effects of such costs in single-period models under restrictive assumptions, I derive a general upper bound on these effects that is also valid in continuous time. Illustrative calculations reveal that large holding costs must be postulated to generate significant asset pricing effects.

Empirical studies of dual class shares indicate that superior voting shares (SVS) sell at a premium relative to their counterpart restricted shares (RVS). This paper uses Toronto Stock Exchange data to show that SVS price premium over RVS reflects the expected takeover premium paid to shareholders outside the control block. Thus, marginal shareholders pay a higher SVS price in anticipation of receiving a differential takeover bid as suggested by the extra merger hypothesis. Further analysis indicates that voting power increases the price premium while ownership, size, and the higher trading liquidity of RVS are inversely related to the premium.

Price adjustment delays occur between in-the-money convertible preferred stock prices and common stock prices. Convertible preferred prices systematically deviate from the prices predicted from their conversion relations with common stocks. The price predictability stems from price changes in the underlying common stocks leading the price changes in the convertible preferred stocks by up to nine hours. Cross-sectionally, about 70 percent of the variation in the unsigned size of the price deviations is explained by proxies for costs of arbitrage.

Prior empirical evidence of predictable variations in stock returns following large price changes is found to be, at least in part, driven by the sample selection bias arising from the systematic movement of closing transaction prices within the bid-ask spread. By using the average of the bid-ask prices in the sample selection process, the price reversal on the day following the events (day +1) disappears. For a short-run period after day +1, however, systematic abnormal return patterns are still observed. These short-run price reversals persist even after controlling for the influence of systematic trading patterns around the events. However, investigation of contrarian investment profits from these short-run price reversals shows that the average abnormal returns are not large enough to cover the transaction price movement between the bid and ask prices.

We study the impact of exchange rate fluctuations and political risk on the risk premiums reflected in cross-sections of individual equity returns from Mexico, a country that has experienced significant monetary and political turbulence. Indicators from Mexico's currency and sovereign debt markets are employed as proxies for exchange rate and political risks. We find some evidence of equity market premiums for exposure to these risks. The results suggest common factors in emerging market equity, currency, and sovereign debt markets, and have several implications for corporate and portfolio management and for the use of emerging market data by researchers.

We consider the problem of pricing an American contingent claim whose payoff depends on several sources of uncertainty. Several efficient numerical lattice-based techniques exist for pricing American securities depending on one or few (up to three) risk sources. However, these methods cannot be used for high dimensional problems, since their memory requirement is exponential in the number of risk sources. We present an efficient numerical technique that combines Monte Carlo simulation with a particular partitioning method of the underlying assets space, which we call Stratified State Aggregation (SSA). Using this technique, we can compute accurate approximations of prices of American securities with an arbitrary number of underlying assets. Our numerical experiments show that the method is practical for pricing American claims depending on up to 400 risk sources.

Recent theoretical models suggest debt and dividends can serve as substitute free cash flow control or signaling devices. I examine share price responses to announcements of straight debt issues and test whether there are systematic differences between low and high dividend payout firms. Share price response is significantly positive for low growth-low dividend payout firms, and is negatively related to cross-sectional dividend payout. The results support arguments that debt and dividends are substitutes. The results also support arguments that debt provides free cash flow or signaling benefits, but suggest the benefits are significant only for firms with low levels of substitutes. I also document that low growth-low dividend payout firms enter capital markets less frequently, but find no relation between share price response and this frequency.

Using synchronous transactions data for IBM from the New York, Pacific, and Midwest Stock Exchanges, we estimate an error correction model to investigate whether each of the exchanges is contributing to price discovery. Johansen's test yields two cointegrating vectors, which together verify the expected long-run equilibrium of equal prices across the three exchanges. Two error correction terms specified as the differences from IBM prices on the NYSE indicate that adjustments maintaining the long-run cointegration equilibrium take place on all three exchanges. That is, IBM prices on the NYSE adjust toward IBM prices on the Midwest and Pacific Exchanges, just as Midwest and Pacific prices adjust to the NYSE.

We investigate the stock market reaction to 447 announcements of business relocation decisions in the 1978–1990 period. We find that the stock market reaction to such decisions is tied to the motive for the relocation and the implied prospects for the firm, with the type of facility being relocated playing an insignificant role. Our finding reconciles several results in the literature concerning the stock market reaction to announcements of capital investment decisions.

Offshore dollar-denominated equity-linked issues were a more important source of funds for Japanese companies during the 1980s than domestic equity and straight debt issues combined. Using a sample of Japanese equity-linked offshore issues from 1977 to 1989, we find that the announcement of these issues is accompanied by a significant positive abnormal return. This contrasts with evidence that U.S. equity-linked issues have a significant negative stock price reaction. We provide an explanation for the difference in stock price reactions between U.S. and Japanese issues that is based on the greater influence on managers' security issue decisions of long-term investors and banks in Japan than in the U.S.