@inproceedings{14017, author = {{Szopinski, Daniel and John, Thomas and Kundisch, Dennis}}, booktitle = {{TREO Talks in conjunction with the 40th International Conference on Information Systems (ICIS)}}, location = {{Munich, Germany}}, title = {{{Teaching business model innovation to large and interdisciplinary IS/IT classes: A didactic approach involving peer feedback via self-recorded video presentations}}}, year = {{2019}}, } @inproceedings{14019, author = {{Szopinski, Daniel}}, location = {{Renningen, Germany}}, title = {{{Activate software-based business model development tools: An exploratory study}}}, year = {{2019}}, } @article{14023, author = {{Beverungen, Daniel and Breidbach, Christoph F. and Poeppelbuss, Jens and Tuunainen, Virpi Kristiina}}, issn = {{1350-1917}}, journal = {{Information Systems Journal}}, title = {{{Smart service systems: An interdisciplinary perspective}}}, doi = {{10.1111/isj.12275}}, year = {{2019}}, } @article{14540, author = {{Schryen, Guido and Kliewer, Natalia and Borndörfer, Ralf and Koch, Thorsten}}, journal = {{OR News}}, pages = {{34--35}}, title = {{{High-Performance Business Computing – Parallel Algorithms and Implementations for Solving Problems in Operations Research and Data Analysis}}}, volume = {{65}}, year = {{2019}}, } @inproceedings{14543, author = {{Szopinski, Daniel and John, Thomas and Kundisch, Dennis}}, location = {{Munich, Germany}}, title = {{{Digital Tools for Teaching Business Model Innovation in Information Systems: A newly developed didactic approach comprising video-based peer feedback}}}, year = {{2019}}, } @article{13121, author = {{Breitmayer, Bastian and Hasso, Tim and Pelster, Matthias}}, issn = {{0165-1765}}, journal = {{Economics Letters}}, title = {{{Culture and the disposition effect}}}, doi = {{10.1016/j.econlet.2019.108653}}, volume = {{184}}, year = {{2019}}, } @article{13122, author = {{Breitmayer, Bastian and Massari, Filippo and Pelster, Matthias}}, issn = {{1059-0560}}, journal = {{International Review of Economics & Finance}}, pages = {{443--464}}, title = {{{Swarm intelligence? Stock opinions of the crowd and stock returns}}}, doi = {{10.1016/j.iref.2019.08.006}}, volume = {{64}}, year = {{2019}}, } @phdthesis{13125, author = {{Görzen, Thomas}}, publisher = {{Universität Paderborn}}, title = {{{Essays on Crowd Based Idea Evaluation - Empirical Evidence from an Anonymous Online Crowd}}}, year = {{2019}}, } @techreport{13137, abstract = {{Non-GAAP reporting is under debate as managers may opportunistically inflate non-GAAP earnings. By separating firms into groups based on exclusions of recurring expenses before material restatements occur this paper investigates whether market participants are misled based on ex-ante non-GAAP reporting. The results show a decline in cumulative abnormal returns (–11.8% aggressive non-GAAP Reporting vs. –2.7% non-aggressive non-GAAP reporting), reduction in overvaluation (–22.18% vs. no decline) and losses in the earnings response coefficient (–51.8% vs. no significant decline) for firms with prior aggressive non-GAAP reporting. Further, we document that investors are less responsive to aggressively reported non-GAAP earnings ex-post, indicating that increased attention enhances investor’s ability to see through the quality of non-GAAP exclusions. }}, author = {{Müller, Jens and Sievers, Sönke and Mehring, Oliver and Sofilkanitsch, Christian}}, keywords = {{Keywords: non-GAAP reporting, restatements, information content of earnings, firm value, overvaluation}}, pages = {{65}}, title = {{{Non-GAAP Reporting and Investor Attention: Are Investors Misled by Exclusions of Recurring Expenses from Non-GAAP Earnings before Restatement Announcements?}}}, year = {{2019}}, } @techreport{13146, abstract = {{Employing a sample of 492 merger and acquisition (M&A) announcements from 284 acquirers across North America and Europe between 2005 and 2018, this study analyzes the impact of M&A announcements on an acquirers abnormal CDS spread changes. We find that spreads from CDS which are written on acquirers increase by 310 bps during a symmetric five-day event window suggesting that investors expect an increase in the acquirers credit risk exposure due to M&As. Next to this baseline finding, we conduct a large variety of sensitivity analyses to gain more insight into the driving factors of the rising risk perception of CDS investors due to M&A announcements.}}, author = {{Hippert, Benjamin}}, keywords = {{credit default swaps, risk perception of CDS investors, mergers and acquisitions, event study}}, title = {{{The relationship between announcements of complete mergers and acquisitions and acquirers' abnormal CDS spread changes}}}, year = {{2019}}, } @article{13148, abstract = {{This paper examines the evolutionary stability of behaviour in contests where players’ participation can be stochastic. We find, for exogenously given participation probabilities, players exert more effort under the concept of a finite-population evolutionarily stable strategy (FPESS) than under Nash equilibrium (NE). We show that there is ex-ante overdissipation under FPESS for sufficiently large participation probabilities, if, and only if, the impact function is convex. With costly endogenous entry, players enter the contest with a higher probability and exert more effort under FPESS than under NE. Importantly, under endogenous entry, overdissipation can occur for all (Tullock) contest success functions, in particular those with concave impact functions.}}, author = {{Gu, Yiquan and Hehenkamp, Burkhard and Leininger, Wolfgang}}, issn = {{0167-2681}}, journal = {{Journal of Economic Behavior & Organization}}, pages = {{469--485}}, title = {{{Evolutionary equilibrium in contests with stochastic participation: Entry, effort and overdissipation}}}, doi = {{10.1016/j.jebo.2019.06.011}}, year = {{2019}}, } @article{13149, author = {{Wünderlich, Nancy V. and Hogreve, Jens and Chowdhury, Ilma Nur and Fleischer, Hannes and Mousavi, Sahar and Rötzmeier-Keuper, Julia and Sousa, Rui}}, issn = {{0148-2963}}, journal = {{Journal of Business Research}}, title = {{{Overcoming vulnerability: Channel design strategies to alleviate vulnerability perceptions in customer journeys}}}, doi = {{10.1016/j.jbusres.2019.07.027}}, year = {{2019}}, } @article{13454, author = {{Eggert, Andreas and Kleinaltenkamp, Michael and Kashyap, Vishal}}, journal = {{Industrial Marketing Management}}, pages = {{13----20}}, title = {{{Mapping Value in Business Markets: An Integrative Framework}}}, volume = {{79}}, year = {{2019}}, } @article{13455, author = {{Garnefeld, Ina and Eggert, Andreas and Husemann-Kopetzky, Markus and Boehm, Eva}}, journal = {{Journal of the Academy of Marketing Science}}, number = {{4}}, pages = {{595----616}}, title = {{{Exploring the link between payment schemes and customer fraud: a mental accounting perspective}}}, volume = {{47}}, year = {{2019}}, } @inproceedings{13456, author = {{Eggert, Andreas and Boehm, Eva and Akalan, Rodi and Gebauer, Heiko}}, title = {{{Service Growth by Acquisition – An Event Study}}}, year = {{2019}}, } @article{13457, author = {{Eggert, Andreas and Steinhoff, Lena and Witte, Carina}}, journal = {{Journal of Marketing}}, title = {{{Gift Purchases as Catalysts for Strengthening Customer–Brand Relationships}}}, year = {{2019}}, } @article{10103, abstract = {{We investigate the demographic characteristics, trading patterns, and performance of 465.926 brokerage accounts with respect to cryptocurrency trading. We find that cryptocurrency trading became increasingly popular across individuals of all different groups of age, gender, and trading patterns. Yet, men are more likely to engage in cryptocurrency trading, trade more frequently, and more speculative, respectively. As a result, men realize lower returns. Furthermore, we find that investors vary their trading patterns across different asset classes.}}, author = {{Hasso, Tim and Pelster, Matthias and Breitmayer, Bastian}}, journal = {{Journal of Behavioral and Experimental Finance}}, keywords = {{Cryptocurrencies Bitcoin Trading Investor returns Demographics}}, pages = {{64--74}}, publisher = {{Elsevier}}, title = {{{Who trades cryptocurrencies, how do they trade it, and how do they perform? Evidence from brokerage accounts}}}, doi = {{10.1016/j.jbef.2019.04.009}}, volume = {{23}}, year = {{2019}}, } @article{10279, abstract = {{Are cryptocurrency traders driven by a desire to invest in a new asset class to diversify their portfolio or are they merely seeking to increase their levels of risk? To answer this question, we use individual-level brokerage data and study their behavior in stock trading around the time they engage in their first cryptocurrency trade. We find that when engaging in cryptocurrency trading investors simultaneously increase their risk-seeking behavior in stock trading as they increase their trading intensity and use of leverage. The increase in risk-seeking in stocks is particularly pronounced when volatility in cryptocurrency returns is low, suggesting that their overall behavior is driven by excitement-seeking. }}, author = {{Pelster, Matthias and Breitmayer, Bastian and Hasso, Tim}}, issn = {{0165-1765}}, journal = {{Economics Letters}}, keywords = {{cryptocurrencies, bitcoin, investor, risk-seeking}}, pages = {{98--100}}, title = {{{Are cryptocurrency traders pioneers or just risk-seekers? evidence from brokerage accounts}}}, doi = {{10.1016/j.econlet.2019.06.013}}, volume = {{182}}, year = {{2019}}, } @phdthesis{10290, author = {{Gutt, Dominik}}, title = {{{Essays on Drivers and Economic Outcomes of Online-Reviews}}}, doi = {{10.17619/UNIPB/1-688}}, year = {{2019}}, } @techreport{10332, abstract = {{We analyze the incentives for retail bundling and the welfare effects of retail bundling in a decentralized distribution channel with two retailers and two monopolistic manufacturers. One manufacturer exclusively sells his good to one retailer, whereas the other manufacturer sells his good to both retailers. Thus, one retailer is a monopolist for one product but competes with the other retailer in the second product market. The two-product retailer has the option to bundle his goods or to sell them separately. We find that bundling aggravates the double marginalization problem for the bundling retailer. Nevertheless, when the retailers compete in prices, bundling can be more profitable than separate selling for the retailer as bundling softens the retail competition. The ultimate outcome depends on the manufacturers’ marginal costs. Given retail quantity competition, however, bundling is in no case the retailer’s best strategy. Furthermore, we show that profitable bundling reduces consumer and producer surplus in the equilibrium.}}, author = {{Heinzel, Joachim Maria Josef}}, keywords = {{retail bundling, leverage theory, double marginalization}}, publisher = {{CIE Working Paper Series}}, title = {{{Bundling in a Distribution Channel with Retail Competition}}}, year = {{2019}}, }