Value at risk models for volatile emerging markets equity portfolios

This paper investigates the issue of market risk quantification for emerging and developed market equity portfolios. A very wide spectrum of popular and widely used in practice Value at Risk (VaR) models are evaluated and compared with Extreme Value Theory (EVT) and adaptive filtered models, during normal, crises, and post-crises periods. The results are interesting and indicate that despite the documented differences between emerging and developed markets, the most successful VaR models are common for both asset classes. Furthermore, in the case of the (fatter tailed) emerging market equity portfolios, most VaR models turn out to yield conservative risk forecasts, in contrast to developed market equity portfolios, where most models underestimate the realized VaR. VaR estimation during periods of financial turmoil seems to be a difficult task, particularly in the case of emerging markets and especially for the higher loss quantiles. VaR models seem to be affected less by crises periods in the case of developed markets. The performance of the parametric (non-parametric) VaR models improves (deteriorates) during post-crises periods due to the inclusion of extreme events in the estimation sample.     

Monopsony and discriminating monopsony in the nursing market

Theory suggests that equities are a good hedge against inflation. However, most of the empirical evidence for industrialized economies suggests that the relationship between stock returns and inflation is negative. One explanation is the negative correlation between inflation and real output growth. This paper examines the relationship between inflation and stock returns for ten important Emerging Stock Market (ESM) markets, namely, Chile, Mexico, Brazil, Argentina, Thailand, S. Korea, Malaysia, Hong Kong, Philippines and Turkey, during the 1990s. To anticipate the results, the relationship between stock returns and inflation, for the whole sample period, is positive and statistically significant for three of the sample ESMs, while it is positive (but statistically insignificant) for a further three. Only for one ESM is the relationship negative and statistically significant. This result may be due to the role of money and the positive relationship between consumer prices and output.     

Size and momentum in European equity markets: empirical findings from varying beta Capital Asset Pricing Model

We use securities listed on 13 European equity markets to form size and momentum portfolios. We find limited evidence of a size premium but significant momentum returns in eight sample markets. We find that these premia may not constitute an anomaly because they are consistent with a varying‐beta Capital Asset Pricing Model. We also show that systematic risk is related to the business cycle. Furthermore, the results suggest that although size and especially momentum returns are significant, it would be difficult to exploit them in the short to medium run, because they are positive and sizeable in very few years in our sample.     

Stock and credit market expansion and economic development in emerging markets: further evidence utilizing cointegration analysis

This paper empirically investigates the relationship between equity and credit market development and economic growth, in a sample of five very important ‘emerging’ markets. In particular, employing a multivariate time-series methodology to test for long-run trends and causality between variables that proxy for stock market development, credit market development and economic development. The results seem to suggest that equity markets have a role to play only in relatively liberalized economies, like Chile and Mexico. In financially repressed economies, like India, the equity market does not affect real sector growth. Furthermore, the banking crises in the 1980s and 1990s in Chile and Mexico resulted in a negative relation between economic growth and the credit market. In South Korea, equity and credit markets both affect economic growth, but not vice versa. In countries where the nature of the stock market has been speculative, like Taiwan, a negative relationship is detected between equity market development and economic development.     

Informed trading around merger and acquisition announcements: Evidence from the UK equity and options markets

This paper offers new evidence on informed trading around merger and acquisition announcements from the UK equity and options market. The analysis suggests that in about 25–33% of events there is abnormal option trading volume during the month that precedes the announcement. Such evidence is found in both call and put option volumes, is robust to different “estimation” and “event window” lengths, to different sub‐samples, and to liquidity considerations. These results support the argument that informed investors will transact in both the options and the stock market, and are comparable to results reported by the FSA in the cash market. © 2010 Wiley Periodicals, Inc. Jrl Fut Mark 31:703–726, 2011     

Valuation ratio style investing and economic sentiment: evidence from major Eurozone markets

Review of Quantitative Finance and Accounting - This paper explores the role of sentiment in style investing for a sample of eight Eurozone markets and makes a distinction between...     

Short-term Contrarian Strategies in the London Stock Exchange: Are They Profitable? Which Factors Affect Them?

Abstract:  This paper provides evidence on short-term contrarian profits and their sources for the London Stock Exchange. Profits are decomposed to sources due to factors derived from the Fama and French (1996) three-factor model. For the empirical testing, size-sorted sub-samples are used, and adjustments for infrequent trading and bid-ask biases are also made. Results indicate that UK short-term contrarian strategies are profitable and more pronounced for extreme market capitalization stocks. These profits persist even when the sample is adjusted for market frictions, risk, seasonality, and irrespective of whether equally-weighted or value-weighted portfolios are employed. The most important factor that drives contrarian profits appears to be investor overreaction to firm-specific information.     

Contrarian Profits and the Overreaction Hypothesis: the Case of the Athens Stock Exchange

This paper investigates the existence of contrarian profits and their sources for the Athens Stock Exchange (ASE). The empirical analysis decomposes contrarian profits to sources due to common factor reactions, overreaction to firm‐specific information, and profits not related to the previous two terms, as suggested by Jegadeesh and Titman (1995). Furthermore, in view of recent evidence that common stock returns are related to firm characteristics such as size and book‐to‐market equity, the paper decomposes contrarian profits to sources due to factors derived from the Fama and French (1993, 1996) three‐factor model. For the empirical testing, size‐sorted sub‐samples that are rebalanced annually are employed, and in addition, adjustments for thin and infrequent trading are made to the data. The results indicate that serial correlation is present in equity returns and that it leads to significant short‐run contrarian profits that persist even after we adjust for market frictions. Consistent with findings for the US market, contrarian profits decline as one moves from small stocks to large stocks, but only when market frictions are considered. Furthermore, the contribution to contrarian profits due to the overreaction to the firm‐specific component appears larger than the underreaction to the common factors.