Knowledge that Transforms

This paper investigates the influence of Swiss firms' disclosure policy and of their financial analysts' coverage on stock price abnormal reactions to the publication of the annual reports. It first shows that, after controlling for the number of analysts, the absolute abnormal returns are significantly and positively affected by the rating measure used as a proxy of the informational quality of annual reports. It furthermore emphasises asymmetry in the relationship between stock price abnormal reactions and two informational variables, namely the quality of the firm's disclosure policy and its financial analysts' coverage. It appears that while positive abnormal returns are significantly and positively related to the rating variable, negative abnormal returns are only affected by the number of financial analysts. The inverse relationship between abnormal negative returns and the financial analysts' coverage supports the fact that competition among analysts reduces investors' adverse selection problem. Finally, the study evidences a non-linear relationship between rating and positive abnormal returns which is meaningful for the “good” and “very good type” firms and thus emphasises the signaling role played by a firm's financial disclosure policy.

Comment on ‘Valuation of Barrier Options in a Black–Scholes Setup with Jump Risk’ Hans-Peter Bermin Hans-Peter Bermin Search for other works by this author on: Oxford Academic Google Scholar Review of Finance, Volume 3, Issue 3, 1999, Pages 343–345, https://doi.org/10.1023/A:1009865221699 Published: 01 December 1999

Many evaluation techniques typically measure performance as deviations of average returns on actively managed funds from those predicted by some asset pricing model. Empirical evidence, however, has so far suggested that all asset pricing models lack empirical support, implying that the models contain mis-specification errors to various degrees. Evaluating mutual fund performance relative to any of these models thus becomes problematic. In this paper, we propose an approach to performance measurement that emphasizes minimizing explicitly the pricing error associated with an asset pricing function which is employed to compute performance measures. This approach is henceforth called the minimum specification-error (MSE) method. We also discuss the statistical properties for implementing MSE performance measure. To demonstrate the significance of the pricing error confounded in evaluation measurement, we contrast our methodology with the Grinblatt and Titman (1989) period weighting approach and with the empirical implementation of Chen and Knez (1996). We find that the greater the pricing error of passive assets, the larger the performance measures. Given the average pricing error generated from a collection of 163 diverse passive portfolios used in this analysis the performance values assigned to a large number of the funds become statistically and economically insignificant.

We study a financial market containing an infinite number of assets, where each asset price is driven by an idiosyncratic random source as well as by a systematic noise term. Introducing ”asymptotic assets“ which correspond to certain infinitely well diversified portfolios we study absence of (asymptotic) arbitrage, and in this context we obtain continuous time extensions of atemporal APT results. We also study completeness and derivative pricing, showing that the possibility of forming infinitely well diversified portfolios has the property of completing the market. It also turns out that models where the all risk is of diffusion type are qualitatively quite different from models where one risk is of diffusion type and the other is of Poisson type. We also present a simple martingale based theory for absence of asymptotic arbitrage. JEL Classification: G12, G13,

The model of Foster-Viswanathan (1990, FV) predicts that information heterogeneity among market participants generates patterns in volume, trading costs and volatility. In the Italian Treasury bond market, periodic information asymmetry is related to the arrival of block orders from international investors, which cluster soon after the opening of the market and, respectively, of the US market. Our evidence is that volume is lower and trading costs are higher after the two openings, consistent with FV. We find only weak evidence that volatility behaves as implied by the model. JEL Classification: D82; G14

A three parameter stochastic process, termed the variance gamma process, that generalizes Brownian motion is developed as a model for the dynamics of log stock prices. Theprocess is obtained by evaluating Brownian motion with drift at a random time given by a gamma process. The two additional parameters are the drift of the Brownian motion and the volatility of the time change. These additional parameters provide control over the skewness and kurtosis of the return distribution. Closed forms are obtained for the return density and the prices of European options.The statistical and risk neutral densities are estimated for data on the S&P500 Index and the prices of options on this Index. It is observed that the statistical density is symmetric with some kurtosis, while the risk neutral density is negatively skewed with a larger kurtosis. The additional parameters also correct for pricing biases of the Black Scholes model that is a parametric special case of the option pricing model developed here.

This paper evaluates the welfare implications of front-running by mutual fund managers. It extends the model of Kyle (1985) to a situation in which the insider with fundamentals-information competes against an insider with trade-information and in which noise trading is endogenized. Noise traders are small investors trading through mutual funds to hedge non-tradable or illiquid assets. The insider with trade-information is one of the fund managers. We find that her front-running activity reduces the liquidity costs of her customers, but it also reduces their hedging benefits. As a result, the customers of the front-running manager may be worse off and place smaller orders. The opposite is true, however, for those investors who are not subject to front-running. In aggregate, front-running has either no or positive consequences for welfare. JEL Classification. G14, G23.

The paper derives closed-form formulas for the futures price in the presence of a multi-asset quality option. This is done for two cases: In the first one the underlying assets are zero coupon bonds with different maturities in the single-factor Vasicek model. In the second one these are commodities in a multi-factor setting, again with Vasicek interest rate uncertainty.