Semi-analytical prices for lookback and barrier options under the Heston model

Decisions in Economics and Finance - Under the Heston stochastic volatility model, we derive semi-analytical formulas for the prices of path-dependent options with payoffs linked to the maximum or...     

Transforming Personal Experience into a Pedagogical Tool: Ethical Complaints

One of the crucial intellectual and social challenges facing corporation leaders is to foster a new way of thinking about business and society which recognizes the multinational corporation as a key player in society's responsibility to support and maintain fairness in the global reorganization of markets. In order to establish a sound global social economy, we are in need of the organizing and directing principles of solidarity and subsidiarity. Both of these principles speak to the need of transforming our public and private institutions in such a way that all persons are placed in positions whereby they can share in the benefits of the newly-formed global economy.     

Effects of birth spacing and timing on mothers' labor force participation

Data from the March 1991Current Population Survey [Bureau of the Census, 1992] were used to investigate the effects of children on single and married mothers' labor force participation decisions. Logit results indicated that for both single and married mothers, an increase in education and market experience increases the probability of market participation while an increase in income has a negative effect on the likelihood of mothers' labor market participation. The number of children present in the household negatively affected participation while an increase in the age of children positively influenced the mother's labor market participation. The spacing effect in the married group and the timing effect in the single group were significant. Furthermore, an increase in the number of older children in the household (between the ages of 12 and 17 years) increased the probability of labor market participation by single mothers but decreased that of married mothers.     

The language of social entrepreneurs

This paper questions the application of the entrepreneurship discourse to social entrepreneurship in the UK and looks at how people ‘doing’ social enterprise appropriate or re-write the discourse to articulate their own realities. Drawing on phenomenological enquiry and discourse analysis, the study analyses the micro discourses of social entrepreneurs, as opposed to the meta rhetorics of (social) entrepreneurship. Analysis using both corpus linguistics software and Critical Discourse Analysis showed a preoccupation among interviewees with local issues, collective action, geographical community and local power struggles. Echoes of the enterprise discourse are evident but couched in linguistic devices that suggest a modified social construction of entrepreneurship, in which interviewees draw their legitimacy from a local or social morality. These findings are at odds ideologically with the discursive shifts of UK social enterprise policy over the last decade, in which a managerially defined rhetoric of enterprise is used to promote efficiency, business discipline and financial independence. The paper raises critical awareness of the tension in meanings appropriated to the enterprise discourse by social enterprise policy and practice and illustrates the value of discourse analysis for entrepreneurship and social entrepreneurship research.     

The Production of Goods in Excess of Demand: A Generalization of Self-Protection

We consider a risk-averse firm producing a limited number of goods that can be defective. The firm must determine its level of production before knowing which goods will be defective. Such is the case, for example, for a producer of telecommunications satellites. The problem under scrutiny can be interpreted as a generalization of self-protection for more than two states of nature. In our model, the firm determines jointly its level of production and its demand for insurance. It is shown that, under reasonable assumptions, the two strategies are complements.     

An examination of minimum tick sizes on the Tokyo Stock Exchange

In setting a minimum tick size, exchanges balance the competing objectives of lowering transaction costs and encouraging liquidity provision by minimizing stepping-ahead risk. We examine the trade-off between these two types of costs by examining the proportion of time that the quoted spread equals the minimum tick size (PTIMEMIN). We undertake this analysis on the Tokyo Stock Exchange, a market that sets nine different tick sizes based on stock price. PTIMEMIN varies markedly across stocks, ranging from almost 0 to almost 100 percent. We find that trade size, the number of trades, and price are the most important determinants of whether the minimum tick size is a binding constraint. In fact, trade size and number of trades are more significant determinants of tick size constraint than price. Consequently, we argue that tick size should be set based on trading activity and price, rather than price alone.     

Do reductions in tick sizes influence liquidity?

On 4 December 1995, the Australian Stock Exchange reduced the minimum tick size for stocks priced below $A0.50 and stocks priced above $A10. We use this natural experiment to examine the impact of tick size reductions on liquidity. The present paper reports that although lower tick sizes generally lead to increased liquidity, this result is not universal. Stocks with larger relative tick sizes experience the greatest improvement in liquidity, while stocks with small relative tick sizes and low trading volume experience reduced liquidity. There is no change in order exposure as a result of the reduced tick sizes.