in this paper various arch models and relevant news impact curves including a partially nonparametric (pnp) one are compared and estimated with daily iran stock return data. diagnostic tests imply the asymmetry of the volatility response to news. the egarch model, which passes all the tests and appears relatively matching with the asymmetry in the data, seems to be the most adequate characteriz...

The present research aimed at investigating the deformation of political news headlines translation between English and Persian News Agencies based on Berman`s deformative system. For this purpose, 100 news headlines in English were selected from BBC, Reuters, Associated Press, France, France 24, Financial Times, Business Times, New York Times, Politico, Guardian, CNN, Bloomberg, Middle East Ey...

The reaction of closed-end fund share prices to changes in portfolio values is on average the same whether funds are trading at discounts or premia and whether the changes in portfolio values are positive or negative. If closed-end fund discounts and premia do correctly measure investor sentiment, then these results suggest that investor sentiment does not affect the market’s reaction to news a...

In previous papers, we have presented a logic-based framework based on fusion rules for merging structured news reports. Structured news reports are XML documents, where the textentries are restricted to individual words or simple phrases, such as names and domain-specific terminology, and numbers and units. We assume structured news reports do not require natural language processing. Fusion ru...

Given the importance of the news media in managing the symbolic arena of society, a sizeable body of research has accumulated that considers how that arena is constructed. Klaus Schönbach has touched on this area in his recent entry in the Encyclopedia of Communication, in which he questioned how news organizations were led to " synchronize " their news reports to conform to editorial policy, g...

This paper provides a model to investigate information spreading over cyber-social network of agents communicating with each other. The cyber-social network considered here comprises of individuals and news agencies. Each individual holds a belief represented by a scalar. Individuals receive information from news agencies that are closer to their belief, confirmation bias is explicitly incorpor...

Companies that use their own stock to finance acquisitions have incentives to increase their market values prior to the acquisition date. This study examines whether such companies strategically disclose good news or withhold bad news in order to boost their high stock prices. I find that stock swap acquirers are not more likely to issue favorable management forecasts during the period before t...