Banning Cassandra from the Market? An Empirical Analysis of Short-Selling Bans during the Covid-19 Crisis

2020 ◽  
Vol 17 (3-4) ◽  
pp. 386-418 ◽  
Author(s):  
Gianfranco Siciliano ◽  
Marco Ventoruzzo
Keyword(s):  
Financial Markets ◽  
Information Asymmetry ◽  
Stock Markets ◽  
Abnormal Returns ◽  
Equity Market ◽  
Short Selling ◽  
Market Quality ◽  
Policy Goals ◽  
The World ◽  
European Stock Markets

During the recent COVID-19 pandemic crisis, stock markets around the world have witnessed an abrupt decline in security prices and an unprecedented increase in security volatility. In response to a week of financial turmoil on the main European stock markets, some market regulators in Europe, including France, Austria, Italy, Spain, Greece, and Belgium, passed temporary short-selling bans in an attempt to stop downward speculative pressures on the equity market and stabilize and maintain investors’ confidence. This paper examines the effects of these short-selling bans on market quality during the recent pandemic caused by the spread of COVID-19. Our results suggest that during the crisis, banned stocks had higher information asymmetry, lower liquidity, and lower abnormal returns compared with non-banned stocks. These findings confirm prior theoretical arguments and empirical evidence in other settings that short-selling bans are not effective in stabilizing financial markets during periods of heightened uncertainty. In contrast, they appear to undermine the policy goals market regulators intended to promote.

scholarly journals Measuring Information Asymmetry in Large Active Firms on the Tehran Stock Exchange

2016 ◽  
Vol 63 (3) ◽  
pp. 333-346
Author(s):  
Mostafa Shamsoddini ◽  
Mohammad N. Shahiki Tash ◽  
Farhad Khodadad-Kashi
Keyword(s):  
Firm Performance ◽  
Financial Markets ◽  
Information Asymmetry ◽  
Stock Markets ◽  
Stock Exchange ◽  
Composite Index ◽  
Financial Information ◽  
Investment Strategies ◽  
Information Measuring ◽  
Informational Environment

In financial markets, transparency of financial information is one of the most effective variables of investment strategies. Information asymmetry can seriously affect firm performance on the stock exchange and firms with a poor informational environment can lose the interest of investors. Reducing information asymmetry can have an important effect on firm performance on the stock exchange. Firms may lack a clear informational environment in the market because of the emerging conditions governing the Tehran Stock Exchange. Because larger and more active firms on the Tehran Stock Exchange provide more information, measuring the informational environment of these firms provides an overview of information asymmetry. The present study calculated the information asymmetry in these firms using the PIN and FE indices. The inconsistent results provided by these indices prompted the authors to offer a new index that is a composite of the PIN and FE that can better explain information asymmetry in developing market such as Asian stock markets. The results show that the new composite index, by using the mechanisms of the PIN and FE indices, provides a better outcome. The new composite index shows that the Tosee Melli Inv (TMEL1), Mobarakeh Steel (FOLD1), Iran Mobil Tele (HMRZ1), Saipa (SIPA1) and I.N.C. Ind. (MSMI1) firms have a better informational environment on the Tehran Stock Exchange.

scholarly journals Impact of Macroeconomic Variables on Stock Market Indices Value: A Cross-Country Indices Study

2013 ◽  
Vol 12 (3) ◽  
pp. 65-76 ◽  
Author(s):  
Rohini Mariappan ◽  
Nikita Hari
Keyword(s):  
Stock Market ◽  
Financial Markets ◽  
Stock Markets ◽  
Economic Activity ◽  
Contagion Effect ◽  
Macroeconomic Variables ◽  
The World ◽  
Cross Country

Complete unpredictability and the contagion effect of stock markets could pose significant challenges for the entire financial markets of the world. Moreover, it is an incontrovertible truth that the variations in stock market indices is an integral part of the dynamics of economic activity and can propel social moods and expectations. In fact, the stock market has predicted 10 out of the last 3 recessions.

STOCK MARKET REACTION TO BREXIT ANNOUNCEMENTS: EVIDENCE FROM A NATURAL EXPERIMENT

2019 ◽  
Vol 19 (03) ◽  
pp. 1950018 ◽  
Author(s):  
JÚLIO LOBÃO ◽  
SÍLVIA SANTOS
Keyword(s):  
Stock Market ◽  
Market Efficiency ◽  
Stock Markets ◽  
Natural Experiment ◽  
Abnormal Returns ◽  
Strong Form ◽  
Trading Activity ◽  
Stock Market Reaction ◽  
Cumulative Abnormal Returns ◽  
European Stock Markets

Using four Brexit-related announcements as a source of exogenous information shocks, we investigate the semi-strong form of efficiency in seven major European stock markets. Our results suggest that only the announcement of the Brexit referendum result produced statistically significant negative cumulative abnormal returns in the markets of the sample. However, with the exception of the Irish stock market, the effects ceased to be significant in a period of five trading sessions after the event. We also document an increase in trading activity, though statistically insignificant, in the day of the referendum and in the following days. Overall, our results are in line with the semi-strong form of market efficiency.

MARKET EFFICIENCY IN G-20 COUNTRIES: THE PARADOX OF FINANCIAL CRISIS

2013 ◽  
Vol 08 (01) ◽  
pp. 1350003 ◽  
Author(s):  
JOÃO PAULO VIEITO ◽  
K. V. BHANU MURTHY ◽  
VANITA TRIPATHI
Keyword(s):  
Financial Crisis ◽  
Market Efficiency ◽  
Stock Markets ◽  
Abnormal Returns ◽  
Weak Form ◽  
Ratio Test ◽  
Variance Ratio ◽  
Crisis Period ◽  
The World ◽  
Variance Ratio Test

This paper is amongst the first to investigate weak-form efficiency of the most developed (G-20) countries in the world. It also measures the impact of the 2007 financial crisis on the stock markets of these countries, in terms of their efficiency. Serial correlation test, ADF unit root test, Lo and MacKinlay (1988) variance ratio test, Chow and Denning (1993) RWH test and Wrights' 2000 ranks and signs based multiple variance ratio test were utilized to carry out this analysis. The entire study period was divided into a pre-crisis period (January 1, 2005 – August 8, 2007) and a during crisis period (August 9, 2007 – Deccember 31, 2011). Strong contemporaneous effects emerged across all international markets (except Saudi Arabia) as a consequence of the 2007 crisis. This may be due to increased international intra-day activity across the world markets. It was concluded that the "Samuelson dictum," which states that "while individual stocks are efficient, the market index is inefficient," seems to hold good on a global level by analogy. This is evident on the premise that, on the whole the 2007 crisis reduced return and increased volatility, even though individual markets became more efficient. The most robust result from the analysis is that most of the individual markets are weak-form efficient. Following the crisis of 2007, the methodology used indicates that on the whole, the market efficiency of individual stock markets improved.Hence, during the pre-crisis, volatility was low but heteroskedastic. However, during the period of the crisis, volatility was high but homoscedastic. The heightened volatility and low return that are a consequence of the crisis coupled with improved market efficiency, due to market vigil and control, ensure that abnormal returns and persistent arbitrage possibilities are wiped out. This appears to be a paradox of a crisis.

Review of top five financial markets during the pandemic times

2021 ◽  
pp. 2131001
Author(s):  
Tahir Mumtaz Awan ◽  
Jamal Maqsood
Keyword(s):  
Financial Markets ◽  
Financial Market ◽  
Market News ◽  
Stock Markets ◽  
Stock Exchanges ◽  
Future Market ◽  
Virus Origin ◽  
The World ◽  
Global Stock Markets ◽  
Global Stock

The purpose of this paper is to jot down the devastating impacts of COVID-19 towards the top five financial markets of the world and to see how they reacted back in different phases of COVID-19 from start till July 2020. The review is based on the financial market news, blogs, the governmental, and other financial bodies’ websites. The effects of the pandemic are like the damage never seen before in a much shorter time, vanishing a quarter portion of wealth in about a month and creating continuous uncertainties for investors throughout. China despite being the virus origin still performed well and better among all top markets whereas the rest all the stock exchanges remained inconsistent. This paper is the first of its kind to review the COVID-19 effects on the top five global stock markets and the governmental responses towards them. The study along with contributing to the existing literature is also assisting investors, analysts, specialists, and authorities to analyze their opinions w.r.t. stock markets performances, government responses, and their future market-related decisions.

Inter-linkages and performance of Asian stock markets amidst COVID 2019

2020 ◽  
Vol 07 (03) ◽  
pp. 2050028
Author(s):  
Rajani B. Bhat ◽  
V. N. Suresh
Keyword(s):  
Financial Markets ◽  
Interest Rates ◽  
Stock Markets ◽  
Global Economy ◽  
Global Financial Crisis ◽  
World Health ◽  
Corona Virus ◽  
The World ◽  
Health Organization ◽  
The Impact

The corona virus outbreak, which originated in China, has infected lakhs of people. Its spread has left businesses around the world counting costs. The corona virus is going global, and it could bring the world economy to a standstill. COVID-2019 that began in the depths of China’s Hubei province is spreading rapidly, persuading the World Health Organization to declare it as a pandemic. There are now significant outbreaks from South Korea to Italy and Iran, from America to Britain. The ongoing spread of the new corona virus has become one of the biggest threats to the global economy and financial markets. The economic impact of the COVID-2019 pandemic has introduced extraordinary volatility in global financial markets, as participants are obliged to reassess their valuations of all investments and associated derivatives as the situation develops. In an environment where uncertainty makes it unusually hard to price assets and for market-makers to operate, exchanges are providing the only way to establish consensus on these valuations in real time. Volatility has reached levels comparable with the Global Financial Crisis of 2008, with one-day losses not seen since 1987. The situation is made more challenging by high levels of indebtedness and already low interest rates. The financial markets are all integrated into one as global markets in the current era of globalization. It is important that financial markets remain able to perform their role — providing investors with liquidity, facilitating price discovery, and allowing for risk transfer and the transmission of monetary policy. This study aims at examining the performance of the selected Asian stock markets amidst the times of COVID-2019. This study intends to examine the interlinkages of Asian stock markets selected and to observe the impact of COVID-2019 on these markets. The period of study is from 1st December, 2019 to 31st March, 2020. The tools adopted for the study are correlation, regression, ANOVA and paired sample [Formula: see text] test.

scholarly journals Impact of MiFID II on the Market Volatility—Analysis on Some Developed and Emerging European Stock Markets

Laws ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 55
Author(s):  
Marius Cristian Miloș
Keyword(s):  
Financial Markets ◽  
Capital Markets ◽  
Stock Markets ◽  
Negative Impact ◽  
Short Term ◽  
Emerging Stock Markets ◽  
Volatility Analysis ◽  
Stock Indexes ◽  
European Stock Markets ◽  
The Impact

The paper investigates whether the implementation of MiFID II, a packet of financial legislation applying broadly to European Union financial markets, has led to a change in the volatility of some European developed and emerging stock markets. We show that for the developed capital markets considered in the analysis, MiFID II did not lead to a decrease in the volatility of capital markets. On the contrary, for all analysis intervals considered (3 months, 6 months, 12 months, 18 months and 24 months), the impact on volatility is positive, with volatility increasing in the case of the FTSE 100, CAC40 and DAX stock indexes. There is a similar significant relationship for the Czech stock market, but only over the three-month interval. For the Polish and Romanian stock markets, which enforced MiFID II later, a negative impact of MiFID II on volatility could also be observed. In the Romanian market, MiFID II had a negative impact on volatility on the short-term horizon, while for the Polish market, the impact of MiFID II on volatility is noticeable on a longer term of 24 months.

Brexit referendum and European stock markets: a sector analysis

2020 ◽  
Vol 46 (7) ◽  
pp. 913-933
Author(s):  
Dimitris Kenourgios ◽  
Evangelos Dadinakis ◽  
Ioannis Tsakalos
Keyword(s):  
Stock Returns ◽  
Stock Markets ◽  
Abnormal Returns ◽  
Political Uncertainty ◽  
Content Type ◽  
Stock Indices ◽  
Negative Effect ◽  
Global Investors ◽  
The Uk ◽  
European Stock Markets

PurposeThe purpose of this paper is to assess the reaction of European stock markets after the UK's EU membership referendum (“Brexit”) on June 23, 2016.Design/methodology/approachThe analysis focuses on asector level by using non-aggregate stock indices across EU-28, the UK and several country subsamples. An event study is performed in order to measure cumulative abnormal returns during the post-referendum announcement period.FindingsThe results indicate an unexpected small number of affected sectors across the country samples. A negative effect is observed in the financial sector across both the EU-28 and eurozone samples, whereas basic materials and health care sectors are influenced positively across the European region. Most of the sectors in the UK display a long-lasting positive effect, while the close trade relationships between the UK and selected European countries seem to partly constitute a driving force of sectors' abnormal stock returns after the referendum.Practical implicationsThe results are useful for global investors, traders and portfolio managers in terms of whether short-term gains from investment choices across sectors can be achieved during periods of increased political uncertainty and whether investors distinguished between sectors.Originality/valueThis paper extends the Brexit literature by using, for the first time, European non-aggregate stock indices. It also contributes to the sector-specific contagion studies by identifying which sectors with similar and/or different industrial composition are more prone to political uncertainty caused by the Brexit vote.

Uninformed Traders in European Stock Markets

2010 ◽  
pp. 157-174
Author(s):  
Salvatore Modica
Keyword(s):  
Financial Markets ◽  
Stock Markets ◽  
Downside Risk ◽  
Capital Gains ◽  
Risk Averse ◽  
European Stock Markets

A fully informed agent bets with an uninformed over the capital gains of an asset. A divide-and-choose idea is adapted to induce both trade and revelation of information, but in equlibrium the uninformed buys high and sells low if he is downside risk averse. The result may be seen as an informed-price-maker counterpart of some findings of Glosten-Milgrom (1985) and Kyle (1985) on uninformed agents trading in financial markets.

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