@techreport{46540, abstract = {{Individual cognitive functioning declines over time. We seek to understand how adverse physical health shocks in older ages contribute to this development. By use of event-study methods and data from the USA, England and several countries in Continental Europe we find evidence that health shocks lead to an immediate and persistent decline in cognitive functioning. This robust finding holds in all regions representing different health insurance systems and seems to be independent of underlying individual demographic characteristics such as sex and age. We also ask whether variables that are susceptible to policy action can reduce the negative consequences of a health shock. Our results suggest that neither compulsory education nor retirement regulations moderate the effects, thus emphasizing the importance of maintaining good physical health in old age for cognitive functioning.}}, author = {{Schiele, Valentin and Schmitz, Hendrik}}, keywords = {{Cognitive decline, health shocks, retirement, education, event study}}, publisher = {{RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen}}, title = {{{Understanding cognitive decline in older ages: The role of health shocks}}}, volume = {{919}}, year = {{2021}}, } @techreport{46537, abstract = {{We study effects of retirement on cognitive abilities (up to ten years after retirement) using data from 21 countries in Continental Europe, England, and the US, and exploiting early-retirement thresholds for identification. For this purpose, combines event-study estimations with the marginal treatment effect framework to allow for effect heterogeneity. This helps to decompose event-study estimates into true medium-run effects of retirement and effects driven by differential retirement preferences. Our results suggest considerable negative effects of retirement on cognitive abilities. We also detect substantial effect heterogeneity: Those who retire as early as possible are not affected while those who retire later exhibit negative effects.}}, author = {{Schmitz, Hendrik and Westphal, Matthias}}, keywords = {{Cognitive abilities, retirement, event study, marginal treatment effects}}, publisher = {{RWI - Leibniz-Institut für Wirtschaftsforschung, Ruhr-University Bochum, TU Dortmund University, University of Duisburg-Essen}}, title = {{{The dynamic and heterogeneous effects of retirement on cognitive decline}}}, volume = {{918}}, year = {{2021}}, } @techreport{36060, abstract = {{Merging a sample of 492 merger and acquisition (M&A) announcements from 284 acquiring firms across Europe and North America with data from 5-year single-name credit default swaps (CDSs) written on stock-listed acquiring firms between 2005 and 2018, the paper at hand empirically analyzes the CDS investors’ risk perceptions of M&A announcements using event study methodologies. As a baseline result, we provide evidence for significantly positive cumulative average abnormal CDS spread changes for both, European and North American acquirers suggesting that CDS investors perceive an increase in the acquiring firms’ credit risk exposures due to M&A announcements. Our baseline finding holds under several robustness checks, especially when controlling for the robustness of the empirical design. Moreover, results from a large variety of sensitivity analyses reveal a number of deal and firm characteristics that may explain why CDS investors from our sample expect an increase in the acquirers’ credit risk exposures due to forthcoming M&A transactions. }}, author = {{Hippert, Benjamin and Uhde, André}}, keywords = {{credit default swaps, risk perception of CDS investors, mergers and acquisitions, event study}}, title = {{{CDS Investors’ Risk Perceptions of M&A Announcements}}}, year = {{2021}}, } @techreport{17703, abstract = {{Employing a unique sample of 2,849 tariff imposition announcements by and against the United States (U.S.) over the period from 2018 to 2019, this study analyzes the impact of recent tariff announcements on share prices from 859 U.S. companies. We provide evidence for negative (cumulative) average abnormal stock returns due to tariff announcements during a symmetric three-day event window. We suggest that stock market investors expect adverse impacts of tariff impositions, e.g. a decrease in the companies' future cash flows and a threat of retaliation. The negative wealth effects are observed irrespective of whether the Trump administration announces safeguard tariffs to protect domestic firms or a retaliation is declared by foreign countries. Moreover, building several subsamples, we find that the adverse impact is mostly driven by announcements involving China and is associated with a variety of sector, tariff, trade and firm characteristics.}}, author = {{Wengerek, Sascha Tobias}}, keywords = {{event study, international relations, protectionism, strategic trade policy, tariffs, trade conflict}}, pages = {{63}}, title = {{{Share price reactions to tariff imposition announcements in the Trump era - An event study of the trade conflict}}}, year = {{2020}}, } @article{16249, abstract = {{Timing plays a crucial role in the context of information security investments. We regard timing in two dimensions, namely the time of announcement in relation to the time of investment and the time of announcement in relation to the time of a fundamental security incident. The financial value of information security investments is assessed by examining the relationship between the investment announcements and their stock market reaction focusing on the two time dimensions. Using an event study methodology, we found that both dimensions influence the stock market return of the investing organization. Our results indicate that (1) after fundamental security incidents in a given industry, the stock price will react more positively to a firm’s announcement of actual information security investments than to announcements of the intention to invest; (2) the stock price will react more positively to a firm’s announcements of the intention to invest after the fundamental security incident compared to before; and (3) the stock price will react more positively to a firm’s announcements of actual information security investments after the fundamental security incident compared to before. Overall, the lowest abnormal return can be expected when the intention to invest is announced before a fundamental information security incident and the highest return when actual investing after a fundamental information security incident in the respective industry.}}, author = {{Szubartowicz, Eva and Schryen, Guido}}, journal = {{Journal of Information System Security}}, keywords = {{Event Study, Information Security, Investment Announcements, Stock Price Reaction, Value of Information Security Investments}}, number = {{1}}, pages = {{3 -- 31}}, publisher = {{Information Institute Publishing, Washington DC, USA}}, title = {{{Timing in Information Security: An Event Study on the Impact of Information Security Investment Announcements}}}, volume = {{16}}, year = {{2020}}, } @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}}, } @techreport{36004, abstract = {{Employing a unique sample of 2,849 tariff imposition announcements by and against the United States (U.S.) over the period from 2018 to 2019, this study analyzes the impact of recent tariff announcements on share prices from 859 U.S. companies. We provide evidence for negative (cumulative) average abnormal stock returns due to tariff announcements during a symmetric three-day event window. We suggest that stock market investors expect adverse impacts of tariff impositions, e.g. a decrease in the companies' future cash flows and a threat of retaliation. The negative wealth effects are observed irrespective of whether the Trump administration announces safeguard tariffs to protect domestic firms or a retaliation is declared by foreign countries. Moreover, building several subsamples, we find that the adverse impact is mostly driven by announcements involving China and is associated with a variety of sector, tariff, trade and firm characteristics. }}, author = {{Wengerek, Sascha Tobias and Uhde, André}}, keywords = {{event study, international relations, protectionism, strategic trade policy, tariffs, trade conflict}}, publisher = {{Paderborn University}}, title = {{{Share price reactions to tariff imposition announcements in the Trump era – An event study of the trade conflict}}}, year = {{2019}}, } @article{4397, abstract = {{Employing four event dates of the U.S. “Troubled Asset Relief Program” (TARP) this paper empirically investigates the impact of the first announcement of TARP (September 19, 2008), the announcement of revised TARP (October 14, 2008), respective capital infusions under TARP-CPP and capital repayments on changes in shareholder value and risk exposure of 125 supported U.S. banks as perceived by the capital market through share price reactions for an entire sample period from September 19, 2008 to June 16, 2010. Our analysis reveals a light and a dark side of TARP. While announcements as well as capital repayments may restore market confidence and financial stability, equity capital injections to banks are observed to be a severe impediment to an increase in bank shareholder value and financial soundness. }}, author = {{Farruggio, Christian and Michalak, Tobias C. and Uhde, André}}, journal = {{Journal of Banking and Finance}}, keywords = {{Financial crisis, TARP, Market efficiency, Event study}}, number = {{5}}, pages = {{2586--2604}}, title = {{{The light and dark side of TARP}}}, doi = {{10.1016/j.jbankfin.2013.02.020}}, volume = {{32}}, year = {{2013}}, } @article{4403, abstract = {{Using a unique cross‐sectional dataset of 381 cash and synthetic securitizations issued by 53 banks from the EU‐15 plus Switzerland between 1997 and 2007, this paper provides empirical evidence for time‐dependent negative wealth effects of credit risk securitization announcements in European banking. Baseline results hold when comparing estimated wealth effects with a control group of similar but non‐securitizing banks for the relevant time period. Moreover, building several sub samples we find that the nexus between credit risk securitization, the issuing banks’ overall risk exposure and wealth effects is associated with a variety of transaction‐ and bank‐specific factors. }}, author = {{Farruggio, Christian and Michalak, Tobias C. and Uhde, André}}, journal = {{Journal of Business Finance and Accounting}}, keywords = {{wealth effects, credit risk securitization, Europe, event study}}, number = {{1&2}}, pages = {{193--228}}, title = {{{Wealth effects of credit risk securitization in European Banking}}}, doi = {{https://doi.org/10.1111/j.1468-5957.2012.02273.x}}, volume = {{39}}, year = {{2012}}, } @article{4404, abstract = {{Using a unique dataset of 592 cash and synthetic securitizations issued by 54 banks from the EU-15 plus Switzerland over the period from 1997 to 2007 this paper provides empirical evidence that credit risk securitization has a positive impact on the increase of European banks’ systematic risk. Baseline results hold when comparing estimated beta coefficients with a control group of similar non-securitizing banks. Building several sub-samples we additionally find that (a) the increase in systematic risk is more relevant for larger banks that repeatedly engage in securitization, (b) securitization is more important for small and medium financial institutions, (c) banks have a higher incentive to retain the larger part of credit risk as a quality signal at the beginning of the securitization business in Europe, and (d) the overall risk-shifting effect due to securitization is more distinct when the pre-event systematic risk is low.}}, author = {{Uhde, André and Michalak, Tobias C.}}, journal = {{Journal of Banking & Finance}}, keywords = {{Credit risk transfer, Securitization, Systematic risk, Event study}}, number = {{12}}, pages = {{3061--3077}}, title = {{{Securitization and systematic risk in European banking: Empirical evidence}}}, doi = {{https://doi.org/10.1016/j.jbankfin.2010.07.012}}, volume = {{34}}, year = {{2010}}, }