Covariance breakdowns and connectedness of crude oil futures markets with non-synchronous data

ABSTRACT

This article identifies the breakdowns in the covariance of three benchmark crude oil futures markets (WTI, Brent and Dubai) and investigates the changes of market connectedness across the breakdown periods. As the crude oil futures are traded in different regions, this article eliminates the non-synchronous trading data by employing the Vector Moving Average structure and the Bayesian data augmentation approach, which keeps the integrity of original data without changing its properties. The results show that there are significant breaks in the covariance structure of crude oil futures markets. The breakdown periods are consistent with the periods when the market volatilities are at high level and the returns are volatile. The changes of market connectedness are independent of the covariance states, which supports the globalization hypothesis for the crude oil market. The results also suggest that there is more information flow out of the WTI than to the WTI during the sample period, particularly during the breakdown periods in 2008–2009.     

Price discovery and volatility spillover in spot and futures markets: evidences from steel-related commodities in China

The price discovery and spillover effect are significant indicators in futures markets. This study examines the price discovery and spillover effects using vector error correction model and generalized autoregressive conditional heteroskedastic for seven types of steel products in Chinese spot and futures markets. The results show that the price discovery exists in all of steel futures market. It is also confirmed that futures prices in all items are mainly leading spot prices via permanent-transitory and information share. In the results of spillover effects, it is found that wire rod, coking coal, coke and silico-manganese have the effects between spot and futures market. In rebar market, there is the spillover effect from spot to futures. This information about futures prices can help the market participants to make decisions when they predict the spot prices.     

Trading volume and returns relationship in SET50 index futures market

This study investigates the relationship between trading volume and returns in SET50 index Futures market in the period from April 2006 to December 2008 using 653 observations. From previous studies, we include three methodologies namely the GARCH model, the Generalized Method of Moments （GMM） to estimate systems of equations and the Granger causality test to investigate the relationship more thoroughly. In addition, we introduce the lagged volume as a new explanatory variable in the GARCH model. Overall, the results show the significant contemporaneous and dynamic relationships between trading volume and returns volatility which support the sequential information arrival hypothesis and imply some degree of market inefficiency. The results from this study also show that past information of trading volume can be used to improve the prediction of price volatility. Therefore, regulators and traders could include past information of trading volume of SET50 index futures in tracking and monitoring the market volatility level and the investment risk in order to make a timely decision.     

Trading platform,market volatility and pricing efficiency in the floor-traded and E-mini index futures markets

This study examines the pricing efficiency of E-mini and floor-traded index futures under electronic versus open-outcry trading platforms. By using OLS and quantile regressions to control for changes in market characteristics, we find that pricing errors are smaller in the E-mini markets than the floor-traded markets, thereby confirming that electronic trading has special attractions for arbitrageurs and informed traders. However, during periods of higher volatility, the advantages of speedier execution, anonymity and information efficiency may be offset by arbitrage risks; as a result, larger pricing errors are observed in the E-mini markets. We provide new evidence confirming the important roles in pricing efficiency played by both traditional open-outcry systems and electronic trading systems.     

Asymmetric effects of financial development on South-South and South-North trade: Panel data evidence from emerging markets

Using bilateral trade data in total and technology-and-skill-intensive manufactured goods for 28 developing countries that account for 82% of all developing country manufactures exports between 1978 and 2005, this paper explores the effects of financial development on the pattern of specialization in South-South and South-North trade. The empirical results using dynamic panel regressions and comprehensive sensitivity tests suggest that financial development in the South has an economically and statistically significant positive effect on the share of total and technology-and-skill-intensive manufactures exports in GDP, and total exports in South-South trade. In contrast, no such significant or robust effect of financial development is found in South-North trade. Overall, the positive effect of financial development is found to be asymmetric favoring South-South significantly more than South-North trade. In addition, financial development is found to be increasing technology-and-skill-intensive manufactured goods exports significantly more than total manufactured or merchandise goods exports.     

Information sharing and the volume of private credit in transition: Evidence from Ukrainian bank-level panel data

The effect of lenders' information sharing on the volume of credit is ambiguous in theory and underexplored empirically. Departing from the scant existing literature, which draws on country-level aggregate data, we study the impact of information sharing on the volume of private credit by examining unique bank-level panel data from Ukraine, a transition economy where information sharing among banks is only a recent phenomenon. Employing the fixed-effects framework and dynamic panel methods to address endogeneity due to the non-exogenous nature of banks' choice to participate in information sharing, we find no credit volume effect of information sharing when information sharing takes place through the central bank-administered public credit registry. In contrast, information sharing through private credit bureaus is associated with an increase in the volume of bank lending, in particular when a bank is partner of multiple private credit bureaus. This effect is robust and non-negligible in magnitude.     

Information and transparency in wholesale electricity markets: evidence from Alberta

We examine the role of information transparency in Alberta’s wholesale electricity market. Using data on firms’ bidding behavior, we analyze whether firms utilize information revealed in near real-time through the Historical Trading Report (HTR), which is released 10 min after each hour and contains a complete (de-identified) list of every firms’ bids into the wholesale market from the previous hour. We demonstrate that firms are often able to identify the offers of specific rivals by offer patterns adopted by those firms. For one of these firms, these patterns are associated with higher offer prices. This is consistent with allegations by Alberta’s Market Surveillance Administrator that firms may be utilizing unique bidding patterns to reveal their identities to their rivals to elevate market prices. We show that certain firms respond to rival offer changes with a lag consistent with responding to information revealed through the HTR, and that they respond differently to different firms, suggesting that they are able to infer identification.     

Wage-setting and capital in unionized markets: Evidence from South Europe

The present paper analyzes the optimal response of real wages to the installed capital stock in a dynamic monopoly union. We use data from five Southern European countries during the period 1970–2010. We explore how this rent-extraction response changes over time and across countries depending on the labor market regulatory environment or regime. Regimes are allowed to be determined endogenously by the econometric methodology and seem to be consistent with relevant anecdotal evidence. We find that wages responded positively to the capital stock during periods of heavy regulation, while this response was significantly lower or even negative when labor markets became more flexible.     

On the welfare equivalence of asset markets and banking in Diamond Dybvig economies

Why do people choose bank deposit contracts over a direct participation in asset markets? In their seminal paper, Diamond and Dybvig’s (1983) answer this question by claiming that bank deposit contracts can implement allocations that are welfare superior to asset markets equilibria. The present paper demonstrates that this claim is false whenever the asset market participants are highly rational.     

Credit channel and flight to quality in emerging markets: evidence from Chile

Empirical evidence of the credit channel of monetary policy often relies on the observance of flight to quality during monetary tightening. The identification assumption is that the typically smaller firms facing financing constraints, are disproportionally affected by the stance of monetary policy. I argue that when credit constrains are widespread, as may be the case in Emerging Markets, flight to quality should not be expected during monetary contractions. Indeed, in my model, among constrained firms, those with tighter financing constraints are less responsive to monetary conditions. I find evidence supporting my model in a sample of firms from the Emerging Market of Chile.     

Conditional risk and return in Asian emerging markets: evidence from the banking sector

Previous studies reach no consensus on the relationship between risk and return using data from one market. This study argues that the market factor should be noticed in assessing the risk-return relationship in a partially integrated emerging market. The analysis aims to provide new insight into the nature of the risk-return relationship by a conditional factor GARCH-M framework that controls for time-series effects, to investigate the banking sector in five Asian emerging markets of China, Hong Kong, Indonesia, Malaysia and Taiwan during the period 1995 to 2004. Finally, the study provides evidence on these relations before and after the Asian financial crisis of 1997. The results are generally consistent across the markets and with expectations, and have implications for empirical assessments of the risk-return relationship and diversification.     

Extracting portfolio management strategies from volatility transmission models in regime-changing environments: Evidence from GCC and global markets

Unlike previous studies, this paper uses the Multi-Chain Markov Switching model (MCMS) to examine portfolio management strategies based on volatility transmission between six domestic stock markets of Gulf Arab states (GCC) and global markets (i.e., the U.S. S&P 500 index and oil prices) and compares the results with those of the VAR model. Our volatility approach is range-based and not return-based which is traditionally used in estimating the optimal hedge ratios and portfolio weights. The results demonstrate the relative hedging effectiveness of the MCMS model compared to the VAR. We also highlight the time and regime dependency of the optimal hedge ratios and the portfolio weights for each selected pair of the considered markets conditional on the regime of the same market and the regimes of the other market. Policy implications on portfolio strategies under different states are also discussed.     

On the real effects of inflation in open economies: theory and empirics

Based on the quarterly data from four open economies (the US, the UK, Canada, and Italy) and estimated correlations and impulse responses within the traditional vector autoregressive (VAR) analysis, we find that inflation, both in the short and long term, negatively affects consumption and investment, and has a positive influence on the current account. We propose an infinite-horizon optimizing model of an open economy with a fixed rate of time preference that explains these empirics. In this type of economy, households consume both durable and non-durable goods, firms operate under costly investment, and all the transactions involving consumption and investment are subject to cash-in-advance (CIA) constraints. Employing the new ‘sign restriction’ identification procedure due to Uhlig (J Mone’t Econ 52(2)381–419, 2005), we corroborate the empirical validity of the proposed model. In order to verify the robustness of our results, we consider another shock, namely, productivity shock in our empirical analysis and find that while productivity shock dominates in the case of the US, inflationary shock has a dominating effect in the case of the UK, Canada, and Italy.     

On the detection of extreme movements and persistent behaviour in Mediterranean stock markets: a wavelet-based approach

We combine the global Hurst exponent and Morlet wavelet multi-resolution analysis (MRA) to investigate the dynamic behaviour of six selected stock markets in the Mediterranean region. Specifically, we employ the resonance coefficients and their power spectra to identify potential extreme movements and long-term dependence in stock returns. Using weekly data for the period 2005 to 2010, our results reveal that the wavelet MRA is able to reconstruct the effects of major extreme shocks on stock returns of studied markets, such as the Asian financial crisis, the 9/11 terrorist attacks and the 2007–2009 financial crisis. Moreover, the wavelet-based global Hurst exponent indicates the presence of long-term dependencies in stock returns of all the considered markets, except for France where the anti-persistent behaviour is detected. Overall, our findings are useful to assess the stock market efficiency and provide new insights into stock market dynamics over different time scales.     

Supply and quality choices in private child care markets: Evidence from São Paulo

Many developing countries have adopted the market approach for expanding the supply of child care, but little is known about the economic behavior of independent providers. Drawing on uniquely rich census data on child care providers from São Paulo, we document three main facts: (1) the stock of private suppliers is considerably larger in high-income city districts; (2) the quality of private provision – as measured by teachers' schooling, group size and equipment – is highly heterogeneous across space and increases systematically with local household income; and (3) a considerable share of centers operates below recommended (but not regulated) quality standards, especially in low-income districts. These findings are consistent with a model of endogenous entry and quality choices by heterogeneous providers. Market-driven heterogeneity in the quality of provision across space is an important consideration for the design of regulations in child care markets.