STRUCTURE, CONDUCT AND PERFORMANCE ANALYSIS OF THE SOUTH AFRICAN AUTO INSURANCE MARKET: 1980-2000

The traditional structure-conduct-performance framework makes the explicit prediction that market structure determines market conduct, performance and power. The primary goal of this study is to evaluate this prediction using the South African (SA) short-term auto insurance market. The empirical evidence shows that a link between market structure and market conduct, performance and/or power is not present. "Prices" and profits are not statistically significantly related to various sellers' concentration measure and do not follow any explicit trend over time. By construction, profits are directly related to "prices" and follow a cyclical trend, as observed in other countries. A secondary goal of this paper is to compare the findings for the US auto insurance market with the empirical evidence on the SA auto insurance market. While there are few similarities, there is an underwriting cycle in the SA auto insurance market such as is observed for the US auto insurance market.     

齐齐哈尔市农产品加工企业技术创新战略选择

本文首先阐述了技术创新战略的各类及特征,然后对齐齐哈尔市农产品加工企业的技术创新现状进行了分析,在此基础上,论述了目前齐齐哈尔市农产品加工企业应选择合作创新战略的理由,并提出了合作创新战略实施中应注意的问题。     

ECONOMICS OF STOCK-PRICE VIBRATIONS: RIDING SPECULATIVE WAVES WITHOUT SPECULATION

Abstract.  When speculation causes share prices to fluctuate, even the best speculators may do 'hardly better than the comprehensive common-stock averages' (Samuelson). We further demonstrate in this paper that non-speculators can indeed benefit, in terms of both utility and wealth, from speculative price fluctuations by choosing their portfolio optimally. In particular, we show both how much and how fast non-speculators' wealth can accumulate, presumably at speculators' expenses, over periods of price fluctuations. We also show a seemingly paradoxical outcome where a rational individual would rejoice more when stock prices fall than when they rise by the same (absolute) amounts.     

Mutual Fund Performance: Evidence from the UK

This paper uses a large sample containing the complete return histories of 2300 UK open-ended mutual funds over a 23-year period to measure fund performance. We find some evidence of underperformance on a risk-adjusted basis by the average fund manager, persistence of performance and the existence of a substantial survivor bias. Similar findings have been reported for US equity mutual funds. New findings not previously documented for other markets include evidence that mutual fund performance varies substantially across different asset categories, especially foreign asset categories. We also identify some new patterns in performance related to the funds' distance from their inception and termination dates: underperformance intensifies as the fund termination date approaches, while, in contrast, there is some evidence that funds (weakly) outperform during their first year of existence.