Higher initial margin requirements are associated with lower subsequent stock market volatility during normal and bull periods, but show no relationship during bear periods. Higher margins are also negatively related to the conditional mean of stock returns, apparently because they reduce systemic risk. We conclude that a prudential rule for setting margins (or other regulatory restrictions) is to lower them in sharply declining markets in order to enhance liquidity and avoid a depyramiding effect in stock prices, but subsequently raise them and keep them at the higher level in order to prevent a future pyramiding effect.

This paper has several objectives. The first is to explore the type (or types) of imperfect competition that prevailed in the retail banking sector in the 1990s. A general linearised pricing model is employed to test for the degree to which competition in certain markets deviated from the competitive ideal. The key finding, is that, with the exception of mortgage products, deposit and loan rate setting by UK financial institutions is best described by the Salop–Stiglitz model of monopolistic competition, with bargain and rip-offs. Cournot type behaviour is evident in some cases. Indirectly, the presence of perfect contestability is largely ruled out. Another objective is to compare these findings with the results of a similar study conducted nearly a decade ago, when financial reforms introduced to encourage greater competition were relatively recent. Based on the results of this study, the policy lesson is that financial firms exhibit different types of price setting behaviour depending on the banking product. The policy implication is to require firms to produce comparable information for consumers, thereby helping to contain the loss of consumer surplus in imperfectly competitive markets.

This paper considers the degree of competitiveness of the Dutch consumer credit market. We use the well-known Bresnahan–Lau method that estimates a structural model consisting of a demand relation and a supply relation, based on aggregate data. The level of competition is derived from the estimated conjectural variation elasticity. Our empirical results show that there is no evidence of market power.

Using a system of three simultaneous equations, we test the predictions of Datar, Feltham, and Hughes 1991 and Hughes 1986 between auditor choice, earnings disclosures, and retained ownership in U.S. firms making initial public offerings of securities. Using a sample of initial public offerings between 1990 and 1997, we find that the demand for high-quality auditors increases with firm risk. Additionally, we find that auditor choice, earnings disclosure, and risk are determinants of retained ownership, which is consistent with the predictions of Datar et al. and Hughes that auditor choice and direct disclosure are substitute signals for ownership retention. Further, our results suggest that the signals chosen (i.e., retained ownership, auditor choice, and disclosure) are related through their cost structures and are chosen jointly to minimize the overall cost to the entrepreneur.

Since 1947, hyperinflations (by Cagan’s definition) in market economies have been rare. Much more common have been longer inflationary processes with inflation rates above 100 percent per annum. Based on a sample of 133 countries, and using the 100 percent threshold as the basis for a definition of very high inflation episodes, this paper examines the main characteristics of such inflations. Among other things, we find that (i) close to 20 percent of countries have experienced inflation above 100 percent per annum; (ii) higher inflation tends to be more unstable; (iii) in high-inflation countries, the relationship between the fiscal balance and seigniorage is strong both in the short and longrun’s; (iv) inflation inertia decreases as average inflation rises; (v) high-inflation is associated with poor macroeconomic performance; and (vi) stabilizations from high inflation that rely on the exchange rate as the nominal anchor are expansionary.

Jessica A. Wachter, Portfolio and Consumption Decisions under Mean-Reverting Returns: An Exact Solution for Complete Markets, The Journal of Financial and Quantitative Analysis, Vol. 37, No. 1 (Mar., 2002), pp. 63-91

We define an intertemporal tax discontinuity (ITD) as a circumstance in which different tax rates are applied to gains realized at one point in time versus some other point in time. We study the effects of ITDs on market behaviors at the time of disclosures of firm performance, assuming that all investors who trade firm equities are subject to tax. The results of our paper suggest that relative to an economy in which ITDs are absent, ITDs may dampen trading volume and amplify price changes at the time of disclosure.

This paper examines Wall Street Journal news stories about 79 firms that forced CEO turnover and a matched sample of firms that did not force CEO turnover. In the two years prior to turnover, firms in the forced-turnover sample were the subjects of 76% more news stories about poor firm performance despite being from the same industry, of similar size, and similar performance as a sample of matched firms. Overall, the evidence suggests that scrutiny of poor firm performance by the financial press increases the likelihood of forced CEO turnover.

Stock market returns are significantly correlated with inflation and money growth. The impact of real macroeconomic variables on aggregate equity returns has been difficult to establish, perhaps because their effects are neither linear nor time invariant. We estimate a GARCH model of daily equity returns, where realized returns and their conditional volatility depend on 17 macro series' announcements. We find six candidates for priced factors: three nominal (CPI, PPI, and a Monetary Aggregate) and three real (Balance of Trade, Employment Report, and Housing Starts). Popular measures of overall economic activity, such as Industrial Production or GNP are not represented.

Finance theory proposes that firms’ cost of capital increases when market makers set wider spreads due to perceived higher information asymmetry across traders. Using a sample of UK investment property firms and controlling for firms’ non‐random selection of external monitors, we find evidence that market makers perceive information asymmetry across traders to be lower for firms employing external appraisers versus those employing internal appraisers. This evidence is consistent with liquidity‐motivated traders being unable to overcome such reliability differences using asset value information from sources other than accounting. We fail to find a similar difference for firms employing Big 6 versus non‐Big 6 auditors. Our findings contribute to the debate over the recognition of fair value estimates for long‐lived tangible assets by documenting that reliability differences attributable to differential monitoring by appraisers can affect information asymmetry, and therefore firms’ cost of capital.