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In this article, we describe the various sorts of American Parisian options and propose valuation formulae. Although there is no closed-form valuation for these products in the non-perpetual case, we have been able to reformulate their price as a function of the exercise frontier. In the perpetual case, closed-form solutions or approximations are obtained by relying on excursion theory. We derive the Laplace transform of the first instant Brownian motion reaches a positive level or, without interruption, spends a given amount of time below zero. We perform a detailed comparison of perpetual standard, barrier and Parisian options. 相似文献
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The paper proposes in a regime-shift framework, an arbitrage-free term structure model based on the target and Fed Funds Rates. Empirical observations suggest that a three-state regime-shift environment associated with FOMC monetary actions is justified. Then, a closed-form solution for zero-coupon bonds is derived where regime-shift risk is priced. The solution is flexible enough to incorporate additional state variables. 相似文献
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Arne Bigsten Paul Collier Stefan Dercon Bernard Gauthier Jan Willem Gunning ers Isaksson Abena Oduro Remco Oostendorp Cathy Pattilo Mans Soderbom Michel Sylvain Francis Teal & Albert Zeufack 《Oxford bulletin of economics and statistics》1999,61(4):489-512
Firm level data for the manufacturing sector in Africa, presented in this paper, shows very low levels of investment. The importance of profit effects on investment is investigated using a flexible accelerator, a specification based on the Euler equation and a simple generalisation of these specificiations. There are controls for firm fixed effects. It is shown that the profit effect is very similar for both the accelerator and Euler equation specifications. A comparison with other studies shows that, for small firms, the effect is much smaller in Africa than for other countries. Reasons for the relative insensitivity of investment to profits in African firms are suggested. For the most general specification tested there are no significant differences in the size of the profit effect across the four countries in the study. 相似文献
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The estimation of physical intensity processes in the context of default risk is investigated here. Using data from Moody's Corporate Bond Default Database, a term structure of default probabilities for different rating classes is constructed each year from 1970 to 2001. Two specifications used for modeling the dynamics of the (risk‐neutral) intensity process in the bond‐pricing literature are then examined empirically: the Ornstein–Uhlenbeck and square‐root cases. The results reveal that the Ornstein–Uhlenbeck case is not an adequate modeling alternative with a rejection of this specification in five out of seven credit classes and nonsignificant mean reverting behavior for all credit classes. The square‐root case obtains better results with four credit classes out of seven for which this specification cannot be rejected and significant mean reversion parameters in many cases. © 2008 Wiley Periodicals, Inc. Jrl Fut Mark 29:95–113, 2009 相似文献
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This paper estimates the degree of risk aversion from one of the most popular TV gameshows ever. The format of the show is straightforward; it involves no strategic decision making; we have a large number of observations; and the prizes are cash, which is paid immediately and covers a large range: from £100 up to £1 million. We provide non‐parametric estimates of the utility function and then we test some parametric restrictions. We find that, although the restriction to CRRA utility is statistically rejected, a log function approximates the utility function quite well over a large range of potential winnings. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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Caroline Gauthier 《R&D Management》2014,44(2):171-172
Value creation and capture remain a key but quite a challenging objective for many organizations. R&D and innovation management have to operate in a context of increasing complexity, particularly enriched by emerging technologies, new opportunities for transformation of business models, and multidimensional changes in market demands. This special section proposes new options to deal with this challenge. One paper contributes to the adoption of open business models by studying their antecedents and casual relationships. The three other papers propose using a different focus on value, avoiding its destruction by adopting different unusual mindsets; i.e. learning through failure, learning by deviating and investigating motivations for not participating in innovation communities. 相似文献
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Credit Constraints in Manufacturing Enterprises in Africa 总被引:2,自引:0,他引:2
Bigsten Arne; Collier Paul; Dercon Stefan; Fafchamps Marcel; Gauthier Bernard; Gunning Jan Willem; Oduro Abena; Oostendorp Remco; Patillo Cathy; Soderbom Mans; Teal Francis; Zeufack Albert 《Journal of African Economies》2003,12(1):104-125
We investigate the question of whether firms in Africa's manufacturingsector are credit constrained. The fact that few firms obtaincredit is not sufficient to prove constraints, since certainfirms may not have a demand for credit while others may be refusedcredit as part of profit maximising behaviour by banks. To investigatethis question, we use direct evidence on whether firms had ademand of credit and whether their demand was satisfied in theformal credit market, based on panel data on firms in the manufacturingsector from six African countries. Of those firms with a demandfor credit, only a quarter obtained a formal sector loan. Ouranalysis suggests that while banks allocate credit on the basisof expected profits, micro or small firms are much less likelyto get a loan than large firms. We also find that outstandingdebt is positively related with obtaining further lending. Therole of outstanding debt is likely to be a reflection of inefficiencyin credit markets, while the fact that size matters is consistentwith a bias as well, although we cannot totally exclude thatthey reflect transactions costs on the part of banks. We presentan analysis showing how much more profitable small firms mustbe to obtain a loan than large firms. 相似文献