The empirical study shows that the return rate of the stock price has a long memory, which can be described by fractal Brown motion. The fact that fractal Brown motion does not have the characteristics of Markov makes...The empirical study shows that the return rate of the stock price has a long memory, which can be described by fractal Brown motion. The fact that fractal Brown motion does not have the characteristics of Markov makes the American option value depends on the price change path of the underlying asset. And the ordinary American option pricing model underestimates the American option value. In order to fully reflect the long memory of the underlying asset return rates, we propose fractal American option pricing model, fractal Bermuda option pricing model, and a fractal combination of American option pricing model. Fractal American option value is greater than the ordinary American option value.展开更多
The aim of this work is to analyze the critical issues related to stock options accounting granted to employees. Given the different ways to collect stock option plans, it follows that according to the accounting trea...The aim of this work is to analyze the critical issues related to stock options accounting granted to employees. Given the different ways to collect stock option plans, it follows that according to the accounting treatment adopted, it changes the financial reporting of stock option plans, and thus the information communicated to stakeholders and markets in general. The examination of the accounting treatment of stock options starts from the study of legal changes relating to the stock options and various criteria suggested will be presented for the evaluation of the options and for detection of their cost in the financial statements of companies （Guay, Kothari, ＆ Sloan, 2003）. After the analysis of international accounting standards issued by the International Accounting Standards Board （IASB） on the subject, specifically the ＂IFRS 2＂, we can state that they had a strong impact on Italian companies （Ciampaglia, 2008）. The central aspect of the study, however, consists of an analysis of the market effects of accounting for the cost associated with the issuance of stock option plans （Cerri ＆ Sottoriva, 2010）. Budgeted costs relating to the adoption of stock option plans granted to employees change the measures of economic performance of the enterprise, such as return on investment （ROI） and return on equity （ROE）, with significant effects on the evaluation of the economic capital of the company. A company that does not account for costs related to stock option plans recorded a best exercise, but it could distort the valuation of fmancial analysts （Tagliavini, 2000）. Finally, it can be observed that the proper accounting of costs associated with stock options is a prerequisite for the comparability of financial statements of companies that grant, and it is therefore necessary to adequately reflect the value of the company.展开更多
文摘The empirical study shows that the return rate of the stock price has a long memory, which can be described by fractal Brown motion. The fact that fractal Brown motion does not have the characteristics of Markov makes the American option value depends on the price change path of the underlying asset. And the ordinary American option pricing model underestimates the American option value. In order to fully reflect the long memory of the underlying asset return rates, we propose fractal American option pricing model, fractal Bermuda option pricing model, and a fractal combination of American option pricing model. Fractal American option value is greater than the ordinary American option value.
文摘The aim of this work is to analyze the critical issues related to stock options accounting granted to employees. Given the different ways to collect stock option plans, it follows that according to the accounting treatment adopted, it changes the financial reporting of stock option plans, and thus the information communicated to stakeholders and markets in general. The examination of the accounting treatment of stock options starts from the study of legal changes relating to the stock options and various criteria suggested will be presented for the evaluation of the options and for detection of their cost in the financial statements of companies （Guay, Kothari, ＆ Sloan, 2003）. After the analysis of international accounting standards issued by the International Accounting Standards Board （IASB） on the subject, specifically the ＂IFRS 2＂, we can state that they had a strong impact on Italian companies （Ciampaglia, 2008）. The central aspect of the study, however, consists of an analysis of the market effects of accounting for the cost associated with the issuance of stock option plans （Cerri ＆ Sottoriva, 2010）. Budgeted costs relating to the adoption of stock option plans granted to employees change the measures of economic performance of the enterprise, such as return on investment （ROI） and return on equity （ROE）, with significant effects on the evaluation of the economic capital of the company. A company that does not account for costs related to stock option plans recorded a best exercise, but it could distort the valuation of fmancial analysts （Tagliavini, 2000）. Finally, it can be observed that the proper accounting of costs associated with stock options is a prerequisite for the comparability of financial statements of companies that grant, and it is therefore necessary to adequately reflect the value of the company.
