herd behavior by investors in capital markets is a behavioral bias that can cause to undesirable effects such as bubble, crash and high fluctuation in stock price. this anomalies can disturb the equilibrium relations in stock market and lead to market inefficiency. herd behavior is a condition that investors with rational or in rational reasons ignore private information and imitate from others...

the aim of this study is to investigate the effects of outside board on rm value in tehran stock exchange (tse) from the perspective of information transaction costs. to do so, a sample of 96 firms listed in tse is selected to be studied during the period of 2003-2012. tobin q ratio is used to measure rm's value and bid-ask spread for information transaction costs. in addition to these v...

I ran Insurance Company intends to raise its financial credit and render enhanced services to the insured and the public. The need to meet financial obligations arising from the claims requires determination of the optimum deposited claims reserve with banks. Therefore, the present research study aimed at finding the loss ratio (incurred losses to premiu...

the purpose of this research is investigation of application of the arbitrage pricing theory and effect of unanticipated changes in a set of macroeconomic variables such as inflation rate, money supply, exchange rate, oil price, term structure and industrial production on expected security return in tehran stock exchange. in this research, data are analyzed quarterly for the period of 1997-2008...

Nowadays, companies confront many ups and downs due to optimal or destructive decisions made by corporate executives based on industry trends information. Complexities and environmental uncertainties have made companies more dependent on information. But increasing and accumulation of information may reduce the quality of managerial decisions as well as waste the time. This involves assessment ...

The aim of this study is to investigate the effects of outside board on rm value in Tehran Stock Exchange (TSE) from the perspective of information transaction costs. To do so, a sample of 96 firms listed in TSE is selected to be studied during the period of 2003-2012. Tobin q ratio is used to measure rm's value and bid-ask spread for information transaction costs. In addition to these variable...