SECURITY RETURN DISTRIBUTIONS AND MARKET STRUCTURE: EVIDENCE FROM THE NYSE/AMEX AND THE NASDAQ MARKETS

This paper documents significant and persistent deviations from normality in security return distributions for the NYSE, AMEX, and NASDAQ from 1974 to 1988. Controlling for January and size effects, we find that the deviations of security return distributions from normality decline with increasing portfolio size and investment horizon for the NYSE and AMEX, especially for daily returns. Deviations appear to be greater for the NASDAQ than for the two exchanges even for firms of the same size. Ratios of monthly to daily variances are also larger for the NASDAQ. These results suggest that nonparametric or other robust statistical techniques should be used when valuing equity options and other derivatives, especially when examining NASDAQ security returns. They further imply that trading strategies based on market inefficiencies are more likely to succeed on the NASDAQ.     

Seasonal and Day-of-the-Week Effects in Four Emerging Stock Markets

The “January effect” and the “weekend effect” have proven to be persistent anomalies in U.S. equity markets. The objective of this paper is to examine seasonal and daily patterns in equity returns of four emerging markets: Hong Kong, Singapore, Malaysia, and the Philippines. These markets are gaining importance with the globalization of business; therefore, it is necessary to examine the efficiency and functioning of these capital markets. Our analysis uses daily data for the 12 years from September 1, 1976, to June 30, 1988. The results support the existence of a seasonal pattern in these markets. Returns in the month of January are higher than any other month for all markets examined except the Philippines. A robust day-of-the-week effect is also found. These markets exhibit a weekend effect of their own in the form of low Monday returns. In addition, there exists a strong “Tuesday effect,” which may be related to the + 13 hour time difference between New York and these emerging markets.     

Reviews

DEPRIVATION IN THE OUTER CITY.

Barke, M. and Turnbull, G. 1992: Meadowell: The Biography of an “Estate with Problems”. Aldershot: Avebury, £32.00 cloth.

CHANGING BOUNDARIES OF RACE.

Jones, Trevor. 1993: Britain's Ethnic Minorities. PSI,

£15.

ENTERPRISE IN ARCADIA?

Curran, J. and Storey, D. (eds), 1993: Small Firms in Urban and Rural Locations, London and New York: Routledge, £40, hardback.

MAKING CONNECTIONS.

Turok, I. 1993: Loose connections? Foreign investment and local linkages in “Silicon Glen” Strathclyde Papers on Planning, 23. Centre for Planning, University of Strathclyde, 50 Richmond Street, Glasgow, G1 1XN. £4.00, paper.

COWLEY: THE END OF THE LINE?

Hayter, T. and Harvey, D. (eds) 1993: The Factory and the City: the Story of the Cowley Automobile Works in Oxford. London: Mansell, £40, hardback.

UPDATING SECTOR APPROACHES.

Geddes, M. and Benington, J. (eds) 1992: Restructuring the Local Economy. Harlow: Longman, £22.00, paper.

BORN AGAIN LOCAL GOVERNMENT?

Hodge, M. and Thompson, W. 1994: Beyond the Town Hall: Reinventing Local Government. Fabian Pamphlet, £3.90.     

An assessment of the interruption level of doctors in outpatient appointment scheduling

Interruptions to the server in an outpatient clinic environment have received limited attention in the appointment scheduling literature. However, explicitly modeling interruptions on the part of the doctor may have an impact on the optimal appointment schedule and consequently, on patient waiting times. This is explored with a simulation optimization model that is based on data from time studies and interviews with medical professionals from multiple outpatient clinics. The results show a “plateau-dome” scheduling rule for practical implementation to be robust for low interruption rates and a traditional dome pattern for higher levels of interruptions. In addition, if clinic operations are such that doctors are able to adjust their behavior to complete all work during the session, then the schedule is invariant to changes in the interruption rate.     

Analyzing determinants of value creation in domestic and cross border acquisitions in India

The present study seeks to assess the acquiring company announcement gains, and determinants thereof, in domestic and cross border acquisitions in India. For this purpose, 268 acquisitions comprising of 202 cross border acquisitions and 66 domestic acquisitions constitute the sample set. Standard event study methodology has been employed for computing the announcement returns. Further, regression analysis has been conducted to assess the sources of wealth gains in domestic and cross border acquisition. The results of event study indicate that cross border acquisitions have created significantly higher wealth gains than the domestic ones. Further, the results of regression analysis highlight that cross border acquisitions, pursued by the acquiring companies in technology intensive sector, for the target companies also in technology intensive sector, create superior wealth gains. The reason being, such cross border acquisitions provide an opportunity to the acquiring company to combine and judiciously utilize intangible resources of both the companies on a broader scale across new geographies. Thus, the study contributes to the existing literature on internalization theory by extending it to an emerging market like India.     

Institutional Allocation in Initial Public Offerings: Empirical Evidence

We analyze institutional allocation in initial public offerings (IPOs) using a new data set of U.S. offerings between 1997 and 1998. We document a positive relationship between institutional allocation and day one IPO returns. This is partly explained by the practice of giving institutions more shares in IPOs with strong premarket demand, consistent with book-building theories. However, institutional allocation also contains private information about first-day IPO returns not reflected in premarket demand and other public information. Our evidence supports book-building theories of IPO underpricing, but suggests that institutional allocation in underpriced issues is in excess of that explained by book-building alone.     

Price Discovery in Initial Public Offerings and the Role of the Lead Underwriter

We examine the price discovery process of initial public offerings (IPOs) using a unique dataset. The first quote entered by the lead underwriter in the five-minute preopening window explains a large proportion of initial returns even for hot IPOs. Significant learning and price discovery continues to take place during these five minutes with hundreds of quotes being entered. The lead underwriter observes the quoting behavior of other market makers, particularly the wholesalers, and accordingly revises his own quotes. There is a strong positive relationship between initial returns and the time of day when trading starts in an IPO.     

Stabilization Activities by Underwriters after Initial Public Offerings

Prior research has assumed that underwriters post a stabilizing bid in the aftermarket. We find instead that aftermarket activities are less transparent and include stimulating demand through short covering and restricting supply by penalizing the flipping of shares. In more than half of IPOs, a short position of an average 10.75 percent of shares offered is covered in 22 transactions over 16.6 days in the aftermarket, resulting in a loss of 3.61 percent of underwriting fees. Underwriters manage price support activities by using a combination of aftermarket short covering, penalty bids, and the selective use of the overallotment option.