The formula of Black and Scholes for the valuation of options has led to the great development of mathematical finance. Mathematical finance is attracting more and more attention of researchers. Some useful work has been done, but the majority of discussions are based on perfect markets. A perfect market includes the following conditions: (1) many buyers; (2) many sellers; (3) individual trades...

XBRL (eXtensible Business Reporting Language) facilitates the efficient processing/interpreting of corporate financial information by investors. This paper examines market reactions to financial statement filings in China in the period before and after the XBRL mandate in China to assess the extent to which XBRL may impact the processing of financial information. It finds that absolute price re...

The purpose of this study is to investigate the impact internal psychological factors driving on investor’s investment decision making. investor discussed as research objects are financial literacy, loss aversion, and overconfidence. Data were collected from questionnaires fulfilled by investors registered at securities companies in Central Java, Indonesia. Applying multiple regression approach...

In today's investment world there is emphasis on the role of accounting information. Behavioral factors always play an important role in financial markets. All investors are not rational and their demand for riskiness of assets is influenced by their beliefs and feelings. Optimism, pessimism, self-confidence, ambiguity-aversion, etc. help changing the manner of decision-making process over time...

In this study, we explore whether Wikipedia plays a governance role in the financial market by reducing the information disadvantage of individual investors. We hypothesize that the aggregation of information on Wikipedia enables individual investors to collectively monitor insiders and institutional investors. Using the creation of a firm Wikipedia page as an information event, our empirical r...

T he Internet is changing how information is delivered to investors and the ways in which investors can act on that information. It has lowered both the fixed and marginal costs of producing financial services, thus enabling newer, smaller companies to challenge established providers of these services. On-line brokerage firms, such as E*Trade and Ameritrade, are among the most vivid and success...

We study how the imposition of a redemption fee affects runs on financial institutions when investors are asymmetrically informed about fundamentals. Although the fee eliminates the first-mover advantage by internalizing the payoff externality and, therefore, discourages runs by informed investors, it also alters the information externality by influencing uninformed investors’ learning and may,...

Financial crises are widely argued to be due to herd behavior. Yet recently developed models of herd behavior have been subjected to two critiques which seem to make them inapplicable to financial crises. Herds disappear from these models if two of their unappealing assumptions are modified: if their zero-one investment decisions are made continuous and if their investors are allowed to trade a...