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A Critical Review of Mietzner and Schweizer’s “Hedge Funds versus Private Equity Funds as Shareholder Activists in Germany – Differences in Value Creation”

Ejike Ojih

University of Maryland Global Campus

MGMT 650: Statistics for Managerial Decision-Making

Dr. Joseph Ojih

July 13, 2024

Introduction

The article “Hedge Funds Versus Private Equity Funds as Shareholder Activists in Germany—Differences in Value Creation” by Mark Mietzner and Denis Schweizer, published in the Journal of Economic Finance in 2014, focuses on the comparative impact of hedge funds and private equity funds on shareholder value in Germany. This paper is significant as it explores the relatively under-researched area of how different types of active investors influence corporate governance and firm value within a stakeholder-oriented economy. The purpose of this review is to critically analyze the methodologies, findings, and implications of this study, highlighting its contributions and limitations. In line with this, this review will proceed in a number of steps, in the following logical sequence: first, a presentation of the summary of the article as well as the analysis and evaluation of the article. This will be followed by the discussion of the methodology and data analysis, validity and reliability, authors’ conclusions and their implications. Next is the discussion of the article’s contribution to the finance field, its impact on current research and practice, and its connection to other works and theoretical frameworks.

Summary of the Article

In this article, Mietzner and Schweizer(2011) investigated the valuation effects of German firms targeted by hedge funds and private equity investors, focusing on their abilities to engage actively and reduce agency costs. To do this, they utilized a unique dataset of 159 private equity and 67 hedge fund engagements from 1993 to 2007. The authors employ an event study methodology to assess the abnormal returns following these engagements and conduct cross-sectional analyses to understand the underlying factors affecting these returns.

The key findings of Mietzner and Schweizer’s (2011) work include the observation that both hedge fund and private equity engagements lead to significant positive abnormal returns at the announcement of a change in ownership structure. This suggests that the market responds favorably to the active involvement of these investors. However, there are notable differences in value creation between the two types of investors.

Private equity funds are found to be more successful in creating long-term shareholder value. This success is attributed to their longer-term perspective and their ability to adapt to the corporate governance system in Germany. Conversely, hedge fund targets experience significantly negative long-term abnormal returns compared to private equity targets, indicating potential market misinterpretations or unfulfilled expectations regarding hedge fund strategies (Mietzner and Schweizer, 2011).

Mietzner and Schweizer’s (2011) study differentiates hedge funds and private equity funds based on their incentives and capabilities to reduce agency costs, with private equity showing a stronger alignment with long-term value creation. This differentiation underscores the importance of considering the specific characteristics and strategies of different types of activist investors when evaluating their impact on corporate governance and firm value.

Analysis and Evaluation

Strengths

Comprehensive Dataset: Mietzner and Schweizer’s (2011) study dataset, which spans over 14 years and includes both hedge fund and private equity engagements, provides a robust foundation for analysis.

Rigorous Methodology: The use of event study methodology and cross-sectional analysis allows for a detailed examination of market reactions and the factors influencing these reactions.

Novel Insights: The paper contributes to the literature by highlighting the distinct roles of hedge funds and private equity funds in a stakeholder-oriented economy like Germany.

Weaknesses

Generalizability: The findings are specific to Germany’s corporate governance system, which may limit their applicability to other contexts with different governance structures.

Data Limitations: The study relies on publicly available data, which may not capture all relevant private transactions or informal engagements by hedge funds and private equity investors.

Potential Biases: The exclusion of certain types of investors and transactions, as well as the focus on publicly listed companies, may introduce selection biases.

Methodology and Data Analysis

Mietzner and Schweizer’s (2011) study employs a robust event study methodology to measure abnormal returns and uses cross-sectional regression models to analyze the determinants of these returns. However, the reliance on historical data and the potential for confounding factors (e.g., concurrent market events) could affect the results’ accuracy. The authors address this by applying various statistical tests and robustness checks, enhancing the study’s validity and reliability.

Validity and Reliability

The study’s findings are supported by rigorous statistical analysis and consistency checks. The use of multiple data sources and cross-validation of results further strengthens the reliability of the conclusions. However, the inherent limitations of event studies and potential biases in data selection must be acknowledged.

Authors’ Conclusions and Implications:

Mietzner and Schweizer (2011) concluded that private equity funds are more effective in creating shareholder value in Germany due to their longer-term investment horizon and better adaptation to the local governance environment. This has significant implications for investors and policymakers, suggesting that private equity may be a more suitable vehicle for achieving sustainable value creation in stakeholder-oriented economies.

Contribution to the Field

The article by Mietzner and Schweizer (2011) advances the understanding of shareholder activism by distinguishing between the roles and impacts of hedge funds and private equity funds. It challenges the traditional view of blockholders as homogeneous entities and underscores the importance of considering investor-specific characteristics and motivations. The study’s insights are particularly relevant for markets with stakeholder-oriented governance systems, where the dynamics of shareholder activism may differ from those in more shareholder-focused environments.

Impact on Current Research and Practice

The findings of Mietzner and Schweizer’s (2011) research have practical implications for investors, companies, and regulators. For investors, the study highlights the need to consider the type of activist shareholder when assessing potential value creation. For companies, understanding the distinct approaches of hedge funds and private equity can inform engagement strategies and governance practices. For regulators, the research underscores the importance of fostering an environment that supports effective shareholder activism while balancing stakeholder interests.

Connections to Other Works and Theoretical Frameworks

Simply put, Mietzner and Schweizer’s (2011) article builds on existing literature on agency theory and corporate governance, incorporating insights from studies on blockholder activism and investor behavior. It aligns with the theoretical framework posited by Jensen and Meckling (1976) regarding agency costs and extends it by exploring the specific impacts of different types of blockholders. The study also relates to the work of Shleifer and Vishny (1986) on large shareholders’ monitoring roles and Cronqvist and Fahlenbrach (2009) on the heterogeneity of activist shareholders.

Personal Reflection

From my perspective, Mietzner and Schweizer’s (2011) article offers valuable insights into the nuanced roles of hedge funds and private equity in shareholder activism. It enhances the understanding of how different types of investors can influence corporate governance and firm value, particularly in a stakeholder-oriented context like Germany. The findings of their research challenge the one-size-fits-all approach to blockholder activism and underscore the importance of considering investor-specific characteristics and strategies.

In plain terms, Mietzner and Schweizer’s (2011) article has influenced my understanding of shareholder activism by highlighting the distinct motivations and impacts of hedge funds and private equity funds. It underscores the need for a more differentiated approach to studying and engaging with activist investors, considering their unique incentives, capabilities, and time horizons.

Conclusion

Without putting it in so many words, Mietzner and Schweizer’s article makes a significant contribution to the field of corporate governance and shareholder activism. By differentiating between hedge funds and private equity funds, the study provides nuanced insights into their respective roles in value creation. While the findings are specific to the German context, they offer broader implications for understanding and engaging with activist investors in various governance environments.

The study’s strengths lie in its comprehensive dataset, rigorous methodology, and novel insights, although its generalizability and potential biases must be acknowledged. Overall, the article enhances the understanding of how different types of investors can influence corporate governance and firm value, paving the way for future research on shareholder activism in diverse contexts.

References

Mietzner, M., & Schweizer, D. (2011). Hedge Funds Versus Private Equity Funds as Shareholder Activists In Germany—Differences in Value Creation. Journal of Economic Finance, 38(2), 181-208. DOI: 10.1007/s12197-011-9203-x

Jensen, M. C., & Meckling, W. H. (1976). Theory of the Firm: Managerial Behavior, Agency Costs and Ownership Structure. Journal of Financial Economics, 3(4), 305-360.

Shleifer, A., & Vishny, R. W. (1986). Large Shareholders and Corporate Control. Journal of Political Economy, 94(3, Part 1), 461-488.

Cronqvist, H., & Fahlenbrach, R. (2009). Large Shareholders and Corporate Policies. Review of Financial Studies, 22(10), 3941-3976.