Die Arbeit befasst sich mit den Auswirkungen verschiedener Leerverkaufsbeschränkungen auf Liquidität, Markt Qualität und Informationsgehalt von Leerverkäufen. Basierend auf einer Paper von Kolasinski et al. wird zunächst in die Thematik eingeführt bevor im Anschluss die zentralen Begriffe definiert und in den Kontext eingeordnet werden. Abschließend werden einige von Kolasinki et al. aufgestellte Thesen logisch hergeleitet und deren empirische Überprüfung beschrieben.
Table of Contents
1. Introduction
2. Short selling and its role in international stock markets
2.1 General definition of short selling
2.2 Influence on liquidity and market quality
2.3 Revealing private information
2.4 Political perspective during the financial crisis
3. Approved short selling restrictions by SEC in 2008
3.1 The emergency order
3.1.1 Impact on liquidity and market quality
3.1.2 Influence on information content of short sales
3.2 The short selling ban
3.2.1 Impact on liquidity and market quality
3.2.2 Influence on information content of short sales
4. The empirical analysis of Kolasinski et al. (2009)
4.1 Description of the used models
4.2 Discussion of the results
5. Conclusion
Objectives and Research Themes
This paper examines the business of short selling, specifically analyzing the functions it serves in global stock markets and the impact of various restrictions on market liquidity, quality, and information content. The study utilizes the empirical analysis of Kolasinski et al. (2009) to evaluate how the "Emergency Order" and the "Short Selling Ban" implemented by the SEC in 2008 influenced these market characteristics.
- The role and definition of short selling in international stock markets.
- Market and political perspectives on short selling during the 2008 financial crisis.
- The impact of the SEC's 2008 "Emergency Order" on liquidity and market quality.
- The influence of the 2008 "Short Selling Ban" on market efficiency and information revelation.
- Empirical evaluation of short selling restrictions using regression models.
Auszug aus dem Buch
3.1.2 Influence on information content of short sales
In 3.1.1 we learned already that through the “short restriction effect” those traders and investors were driven outside the market, who didn’t have certain private information they based their position on. The result was a more exclusive market for those stocks impacted by the EO.
Diamond and Verrecchia find a quite understandable explanation for the effect that with increasing costs to short sale the number of actors willing to short decreases. In fact if we imagine very high costs for short selling only those actors will remain in the pool of short sellers who have the highest expected benefit. Of course this traders are the ones who have private information of very high quality. Such information might be a spontaneous announcement of decreasing profit or a worse than expected outlook to future business development, like Cisco Systems Inc. did last November. After the announcement a dramatic drop in share prices of technology companies could be observed.
Although the use of information like that to sell short would be eventually investigated as a potential insider trade by the SEC as insider trading is forbidden, nevertheless the information would be present in the pool of short sellers. In case of relatively low costs the pool of short sellers is quite big, so the concentration of information is relatively low. With increasing costs to short sale the “short restriction effect” drives the uninformed investors out of the pool. In the same time the concentration of information increases as those investors with private information stay in the pool of short sellers. It can be concluded at this point that through the absolute decline of the number of short sellers the information content of short sales magnifies, as only investors with good private information will be willed to accept higher costs to short sell.
Summary of Chapters
1. Introduction: Outlines the background of the 2008 financial crisis, the public criticism of short selling, and the central research objectives regarding the impact of short selling restrictions.
2. Short selling and its role in international stock markets: Provides a theoretical definition of short selling, its impact on market liquidity, its role in revealing private information, and the political context during the financial crisis.
3. Approved short selling restrictions by SEC in 2008: Examines the specific regulatory interventions implemented by the SEC, specifically the "Emergency Order" and the "Short Selling Ban," analyzing their mechanics and effects.
4. The empirical analysis of Kolasinski et al. (2009): Details the mathematical regression models used by Kolasinski et al. to test the hypotheses regarding how these restrictions altered market quality and information content.
5. Conclusion: Summarizes the findings, noting that while short selling is vital for liquidity and market efficiency, its restriction primarily impacts uninformed traders, often with unintended consequences for overall market quality.
Keywords
Short selling, SEC, Emergency Order, Short Selling Ban, Liquidity, Market Quality, Information Content, Financial Crisis, Kolasinski, Informed Investors, Uninformed Investors, Regulation, Stock Markets, Hedge Funds, Regression Analysis
Frequently Asked Questions
What is the fundamental subject of this research paper?
The paper examines the economic impact of short selling restrictions on stock market liquidity, market quality, and the ability of short sales to reveal private information, particularly during the 2008 financial crisis.
What are the central thematic areas covered in the study?
The core themes include the definition and function of short selling, the political reactions to market volatility, and an empirical analysis of specific regulatory actions taken by the SEC in 2008.
What is the primary objective of this work?
The goal is to determine how the "Emergency Order" and the "Short Selling Ban" affected market participants and whether these restrictions successfully met their goals or caused negative externalities in market quality.
Which scientific methodology is utilized?
The author uses a literature review to establish the theoretical framework and then applies the regression-based empirical results from the study by Kolasinski et al. (2009) to verify specific market hypotheses.
What topics are discussed in the main body?
The main body outlines the mechanics of the Emergency Order and the Short Selling Ban, investigates their influence on informed vs. uninformed traders, and discusses the regression models used to test liquidity and information content.
Which keywords characterize this work?
Key terms include Short Selling, SEC, Emergency Order, Liquidity, Market Quality, Information Content, and financial regulation.
How does the author define the "short restriction effect"?
It refers to a phenomenon where increasing costs to short sell drive uninformed investors out of the market, leaving behind only informed investors with high-quality private information.
What role do option market makers play in the context of the short selling ban?
They were excluded from the general ban on short selling, which allowed informed investors to create synthetic short positions using options, though at a higher cost.
Why are the empirical results for the Emergency Order considered less clear than those for the ban?
The author notes that because the Emergency Order impacted a significantly smaller number of stocks compared to the broader ban, statistical verification of the hypotheses proved more difficult.
What is the author's final conclusion regarding the restriction of short selling?
The author concludes that while short selling is often viewed negatively, it is a vital technical component of market liquidity and efficiency, and restrictions often harm the market without achieving the desired political results.
- Quote paper
- Christian Fleischer (Author), 2011, Impact of diverse short selling restrictions on liquidity, market quality and information content of short sales, Munich, GRIN Verlag, https://www.hausarbeiten.de/document/177307
