Reaction to non-scheduled News During Financial Crisis: Australian Evidence
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News analytics software applies linguistic algorithms to newswire releases in order to assign a sentiment score; this allows users to comprehend the unstructured data flowing through newswires. I examine the market reaction of leading Australian stocks to stock-specific news flow during the financial crisis of 2007–2009. A high-frequency VAR model with GARCH effects modelled through a VECH(1,1) specification is utilized. I find a significant market impact induced by contemporaneous news items, a significant and positive relationship between volume and volatility, an increase in bid–ask spreads following periods of increased volatility, and evidence of volatility persistence.
This is an Author's Accepted Manuscript of an article published in the Applied Economics Letters 2014, copyright Taylor & Francis, available online at: <a href="http://www.tandfonline.com/10.1080/13504851.2014.920465">http://www.tandfonline.com/10.1080/13504851.2014.920465</a>
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