Knowledge that Transforms

By considering investor order placement strategy, this paper demonstrates that transaction costs cause bid-ask spreads to be an equilibrium property of asset markets. With transaction costs, the probability of a limit order executing does not go to unity as the order is placed infinitesimally close to a counterpart market quote; thus, with certainty of execution at the counterpart market quote, a "gravitational pull" is generated that keeps counterpart quotes from being placed infinitesimally close to each other. An equilibrium spread is defined and its size linked to market thinness; implications are noted for the design of a trading system.

[Energy-production subsidies are, paradoxically, shown to be likely to increase U.S. dependence on imported oil. Standard studies of net energy yields are shown to be seriously biased upward for two reasons. First, many omit indirect energy inputs, which, our input-output calculation shows, probably causes large errors. Second, those studies all omit the energy opportunity costs of nonenergy inputs (e.g., the fuel substituted elsewhere for the labor used to produce energy). We prove that, absent externalities, any fuel-output subsidy which causes an otherwise unprofitable expansion must yield an incremental fuel output smaller than the increment in energy input plus the energy opportunity costs of other inputs.]

[Several recent empirical studies of trade suggest that interindustry specialization and trade, which reflect the conventional forces of comparative advantage, are also accompanied by intraindustry specialization, which reflects scale economies and consumers' taste for a diversity of products. This paper develops a simple model which illustrates this argument. Two main results are developed. First, the nature of trade depends on how similar countries are in their factor endowments. As countries become more similar, the trade between them will increasingly become intraindustry in character. Second, the effects of opening trade depend on its type. If intraindustry trade is sufficiently dominant, the advantages of extending the market will outweigh the distributional effects, and the owners of scarce as well as of abundant factors will be better off.]

Assuming rational expectations, a specialization of Ross' Arbitrage Pricing Theory is used to obtain a simple securities market valuation formula when dividends follow linear stochastic processes. The implications of this model for the use of accounting data to measure risk and for capital budgeting are explored. A new measure of riskiness based on accounting data is derived, and the use of risk-adjusted discount rates is evaluated.

This study documents empirical anomalies which suggest that either the simple one-period capital asset pricing model (CAPM) is misspecified or that capital markets are inefficient. In particular, portfolios based on firm size or earnings/price (E/P) ratios experience average returns systematically different from those predicted by the CAPM. Furthermore, the ‘abnormal’ returns persist for at least two years. This persistence reduces the likelihood that these results are being generated by a market inefficiency. Rather, the evidence seems to indicate that the equilibrium pricing model is misspecified. However, the data also reveals that an E/P effect does not emerge after returns are controlled for the firm size effect; the firm size effect largely subsumes the E/P effect. Thus, while the E/P anomaly and value anomaly exist when each variable is considered separately, the two anomalies seem to be related to the same set of missing factors, and these factors appear to be more closely associated with firm size than E/P ratios.

Recent studies have implied that the capital market has become more efficient with respect to the announcements of stock splits and corporate earnings. This study calculated residual returns associated with these announcements and then tested, by time period (early and late years), for a between period difference. The results suggest that for certain earnings and split announcements the market is no more efficient than it has been in the past.

The usual assumptions in the continuous-time contingent claims pricing of risky debt are (1) the firm is in default only when the value of its remaining assets falls short of the currently due promised payment and (2) the firm value follows continuous diffusion-process dynamics. It is the joint relaxation of these two simplifying assumptions that motivate this paper in its study of the valuation of risky debt and safety covenants when the firm value follows (possibly) discontinuous sample paths. Explicit solutions are derived and compared to the work of Black and Cox (1976).

This paper examines the effects of a common stock repurchase on the values of the repurchasing firm's common stock, debt and preferred stock, and attempts to identify the dominant factors underlying the observed value changes. The evidence indicates that significant increases in firm values occur within one day of a stock repurchase announcement. These value changes appear to be due principally to an information signal from the repurchasing firm. Common stockholders are the beneficiaries of virtually all of the value increments, but no class of securities examined declines in value as a result of the repurchase.

Valuation by duplication is a useful conceptual technique but it does not yield unique formula. Many duplicating portfolios, some simpler than the three security portfolio in Roll and Whaley, exist for this problem. Valuing the actual single security will generally yield conceptually and computationally simpler solutions.