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In this paper, the authors look into impact of web-portal announcements on company\u2019s stock prices (market value). Using event-study methodology, they provide empirical evidence on the effect of announcements of web portals on the market valuation of the company for a sample of 25 publicly traded companies in 2008. The study examines stock data to access investors and shareholders\u2019 reactions to web portal announcements. Results indicate that web portal announcements significantly and positively influence investors\u2019 perceptions toward financial worth and future prospects of the company. The authors discuss these findings in detail and present implications for both research and practice. Findings offer insight that can be used by managers and executives in understanding the role and effect of a companies\u2019 market value.<\/p>","DOI":"10.4018\/jwp.2010100101","type":"journal-article","created":{"date-parts":[[2011,2,15]],"date-time":"2011-02-15T16:01:40Z","timestamp":1297785700000},"page":"1-17","source":"Crossref","is-referenced-by-count":2,"title":["Impact of Web Portal Announcements on Market Valuations"],"prefix":"10.4018","volume":"2","author":[{"given":"Manish","family":"Gupta","sequence":"first","affiliation":[{"name":"State University of New York, Buffalo, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raj","family":"Sharman","sequence":"additional","affiliation":[{"name":"State University of New York, Buffalo, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2432","reference":[{"key":"jwp.2010100101-0","author":"A.Afuah","year":"2001","journal-title":"Internet Business Models and Strategies"},{"key":"jwp.2010100101-1","doi-asserted-by":"publisher","DOI":"10.1016\/j.im.2006.08.002"},{"key":"jwp.2010100101-2","doi-asserted-by":"publisher","DOI":"10.1016\/S0378-7206(01)00113-6"},{"key":"jwp.2010100101-3","doi-asserted-by":"publisher","DOI":"10.1111\/j.1467-6419.1995.tb00109.x"},{"key":"jwp.2010100101-4","doi-asserted-by":"publisher","DOI":"10.2307\/2490232"},{"key":"jwp.2010100101-5","doi-asserted-by":"publisher","DOI":"10.1287\/isre.6.1.3"},{"key":"jwp.2010100101-6","unstructured":"Bauer, H. 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