Zülch, Mirko Jan

[["dc.contributor.advisorcorporation","Georg-August-Universität Göttingen"],["dc.contributor.author","Zülch, Mirko Jan"],["dc.date.accessioned","2020-01-29T10:15:46Z"],["dc.date.available","2020-01-29T10:15:46Z"],["dc.date.issued","2017"],["dc.description.abstract","nvestors use social media in order to access and exchange information regarding recent events in the business and financial domain. Social media support investors to reduce uncertainty about the implications and the evaluation of such business events. Companies benefit from these event-related activities in social media, for instance with regard to business intelligence purposes. Therefore, it is important for companies to understand why some business events attract more activity in social media than others as well as when investors make use of different types of social media to exchange information related to business events. This cumulative dissertation investigates how the announcement of business events affects the activity in social media and the choice of social media type. This is investigated in the context of merger announcements representing a major business event with uncertainties on many levels. Two categories of influencing factors are considered to explain event-related activity in social media: event-specific factors (i.e. event characteristics) and firm-specific factors (i.e. firm characteristics). The research presented in this dissertation provides evidence that both event characteristics related to information needs of investors as well as firm characteristics related to the visibility of the involved firms explain the event-related activity in social media and the choice of social media type."],["dc.format.extent","154"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62875"],["dc.language.iso","en"],["dc.publisher","eDISS"],["dc.publisher.place","Göttingen"],["dc.title","Activity in Social Media related to Business Events: The Case of Merger Announcements"],["dc.type","thesis"],["dc.type.internalPublication","yes"],["dc.type.subtype","dissertation"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","264"],["dc.bibliographiccitation.journal","BLED Proceedings"],["dc.bibliographiccitation.lastpage","274"],["dc.contributor.author","Zülch, Mirko Jan"],["dc.date.accessioned","2020-03-05T11:27:35Z"],["dc.date.available","2020-03-05T11:27:35Z"],["dc.date.issued","2013"],["dc.description.abstract","Financial blogs are maintained by individuals (investors) in order to share information and opinions about financial topics and events, such as merger attempts. A merger attempt represents a situation of uncertainty for investors, because a lot of merger attempts are unsuccessful. Using a computer-assisted approach for content analysis of textual data, this study aims to explore if blog posts reflect the uncertainty concerning the final result of a merger attempt during the time period between the public announcement of a merger and the date of completion/withdrawal of a merger attempt. The results provide evidence that blog posts that are related to a failed merger attempt reflect more uncertainty, show less optimism, and reflect more signs of failure compared to successful merger attempts. This shows that information exchange in social media can serve as an indicator for other financial phenomena besides capital market reactions."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63156"],["dc.language.iso","en"],["dc.relation.conference","26th Bled eConference eInnovations: Challenges and Impacts for Individuals, Organizations and Society"],["dc.relation.eventend","2013-06-13"],["dc.relation.eventlocation","Bled, Slovenia"],["dc.relation.eventstart","2013-06-09"],["dc.title","An Empirical Analysis of Merger-Related Blog Posts"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","257"],["dc.bibliographiccitation.journal","Americas Conference on Information Systems"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Zülch, Mirko Jan"],["dc.contributor.author","Alić, Irina"],["dc.contributor.author","Muntermann, Jan"],["dc.date.accessioned","2020-02-05T13:42:27Z"],["dc.date.available","2020-02-05T13:42:27Z"],["dc.date.issued","2011"],["dc.description.abstract","To satisfy legal requirements, listed companies are required to continuously publish a wide range of disclosures and reports.Regulatory authorities such as the SEC in the US or the FSA in the UK have developed a complex set of rules andregulations that aim at expanding transparency of capital markets. Therefore, corporations hire professional editorial teams,often being supported by financial service communication consultancies. While the regulatory objective is to increasetransparency, the management has an inherent motivation to give the reports a positive spin. We aim to explore this conflictby analyzing the sentiment of corporate disclosures and to compare this tone with the price reactions following thedisclosures’ publication. On the basis of an empirical analysis of intraday stock price reactions and word lists which providemeans to assess the tone of documents, our results provide evidence that corporates follow a strategy to positively adjust theirexternal reporting."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/62946"],["dc.language.iso","en"],["dc.relation.conference","Seventeenth Americas Conference on Information Systems"],["dc.relation.eventend","2011-08-07"],["dc.relation.eventlocation","Detroit, Michigan"],["dc.relation.eventstart","2011-08-04"],["dc.relation.ispartof","Proceedings of the Seventeenth Americas Conference on Information Systems"],["dc.title","How \"good\" is bad News? Exploring Sentiments of Corporate Disclosures"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.contributor.author","Zülch, Mirko Jan"],["dc.date.accessioned","2020-03-05T11:33:10Z"],["dc.date.available","2020-03-05T11:33:10Z"],["dc.date.issued","2013"],["dc.description.abstract","A merger is a complex process and for investors it represents a situation of uncertainty on many levels. Investors may engage in online information exchange in order to reduce informational uncertainty. Social media can facilitate effective information exchange among investors. Drawing on the concepts of information processing and sense-making, I investigate information processing activities on blogs related to merger-related uncertainty. Furthermore, I investigate information generation, information depth, and the variety of information provided by blogs related to the completion likelihood of a merger. The analysis shows that financial event-related uncertainty can be related to information processing activities in social media."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/63157"],["dc.language.iso","en"],["dc.relation.conference","19th Americas Conference on Information Systems"],["dc.relation.eventend","2013-08-17"],["dc.relation.eventlocation","Chicago, USA"],["dc.relation.eventstart","2013-08-15"],["dc.relation.ispartof","Proceedings of the Nineteenth Americas Conference on Information Systems"],["dc.title","'Will they merge?' Financial Event-Related Information Processing in Social Media"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","83"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.lastpage","15"],["dc.contributor.author","Zülch, Mirko"],["dc.contributor.author","Rajagopalan, Balaji"],["dc.contributor.author","Muntermann, Jan"],["dc.date.accessioned","2018-08-28T13:26:41Z"],["dc.date.available","2018-08-28T13:26:41Z"],["dc.date.issued","2014"],["dc.description.abstract","Business and research likewise acknowledge the potential and economic value of information exchange in social media (i.e. the quality and the quantity of user-generated content). While existing research has mainly focused on the analysis of the impact of online information exchange, little attention has been devoted to the drivers of information exchange in social media related to major business events. In this study we explore drivers of information exchange relating to such events. In the context of merger-acquisition events, we posit that firm visibility based on firm characteristics and information needs triggered by the event itself influence the information quantity generated in social media. We test these hypotheses using a rich data set that includes a wide range of social media types and platforms. Our results show that both firm visibility and information needs are driving information quantity in social media in the context of corporate actions. Both of these driving factors are highly significant in explaining the information quantity in social media."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15594"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Association for Information Systems AIS Electronic Library ( AISeL )"],["dc.relation.conference","The 18th Pacific Asia Conference on Information Systems"],["dc.relation.eventend","2014-06-28"],["dc.relation.eventlocation","Chengdu, China"],["dc.relation.eventstart","2014-06-24"],["dc.relation.isbn","978-988-8353-22-4"],["dc.relation.ispartof","Proceeding of the 19th Pacific Asia Conference on Information Systems (PACIS 2014)"],["dc.title","Drivers of Information Quantity: The Case of Merger-Acquisitions Events"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","44"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.journal","BLED Proceedings"],["dc.bibliographiccitation.lastpage","14"],["dc.bibliographiccitation.volume","2014"],["dc.contributor.author","Zülch, Mirko"],["dc.contributor.author","Weber, Moritz Christian"],["dc.contributor.author","Muntermann, Jan"],["dc.date.accessioned","2018-08-28T13:37:15Z"],["dc.date.available","2018-08-28T13:37:15Z"],["dc.date.issued","2014"],["dc.description.abstract","From Facebook (i.e. a social network site) to Twitter (i.e. a microblog), a large variety of social media types and platforms facilitate information exchange among individuals. The information systems literature provides theoretical approaches to understand media choice, especially when multiple electronic media are available.In this empirical study, we seek to understand social media choice in the context of major business events.We explore how individuals make use of different social media types at different times during the communication process subsequent to the announcement of major business events. While controlling for other task-related influencing factors, our analysis provides evidence that the successive choices of social media types determine the task-related communication process."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15595"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Association for Information Systems AIS Electronic Library ( AISeL )"],["dc.relation.conference","the 27th Bled eConference"],["dc.relation.eventend","2014-06-05"],["dc.relation.eventlocation","Bled, Slovenia"],["dc.relation.eventstart","2014-06-01"],["dc.relation.ispartof","Proceedings of the 27th Bled eConference, Bled, Slovenia."],["dc.title","Social Media Choice: An Explorative Study on Information Transmission via Social Media"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3734"],["dc.bibliographiccitation.lastpage","3744"],["dc.contributor.author","Zülch, Mirko"],["dc.contributor.author","Muntermann, Jan"],["dc.contributor.author","Rajagopalan, Balaji"],["dc.date.accessioned","2018-08-28T13:17:27Z"],["dc.date.available","2018-08-28T13:17:27Z"],["dc.date.issued","2014"],["dc.description.abstract","With the exponential growth of online content in general and social media in particular, quality of content has important business implications. Hence, the often heard phrase - \"content is king\". While the importance of information quality is well established, the question of what factors drive content quality has received limited attention. In this exploratory study, we seek to understand the drivers of information quality on blogs in the context of business events. We posit that event characteristics (information needs) and firm characteristics (firm visibility) jointly influence blog information quality. Our empirical analysis shows that quality of information is high where information needs are high and mixed results regarding the relationship between information quality of blog content and firm visibility."],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15593"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.publisher","Curran Associates, Inc."],["dc.publisher.place","Red Hook, NY"],["dc.relation.conference","The 20th Americas Conference on Information Systems, Savannah, USA."],["dc.relation.eventend","2014-08-09"],["dc.relation.eventlocation","Savannah, USA"],["dc.relation.eventstart","2014-08-07"],["dc.relation.isbn","978-1-63266-753-3"],["dc.relation.ispartof","20th Americas Conference on Information Systems (AMCIS 2014): Smart Sustainability: The Information Systems Opportunity"],["dc.title","Drivers of Information Quality on Blogs: The Case of Business Events"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]