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| Registros recuperados: 12 | |
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| Karali, Berna. |
| The value of USDA reports has long been a question of interest for researchers and practitioners. However, the impact of announcements on comovements across related commodity prices has not been explored beyond financial asset markets. This is important because the structure of the relationship between commodities could change depending on the type of information revealed in the announcement, thus affecting price perceptions, hedging ratios, and portfolio return variance. This study simultaneously measures the impact of selected USDA reports on the conditional variances and covariances of returns on corn, lean hogs, soybeans, soybean meal, and soybean oil futures contracts using a multivariate GARCH model. It is shown that the largest movements in... |
| Tipo: Article |
Palavras-chave: Announcement effects; Futures markets; Market efficiency; Multivariate GARCH; USDA reports; Agricultural Finance; Financial Economics; Political Economy. |
| Ano: 2012 |
URL: http://purl.umn.edu/122315 |
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| Karali, Berna; Dorfman, Jeffrey H.; Thurman, Walter N.. |
| We study the difference in the volatility dynamics of CBOT corn, soybeans, and oats futures prices across different delivery horizons via the smoothed Bayesian estimator of Karali, Dorfman, and Thurman (2010). We show that the futures price volatilities in these markets are affected by the inventories, time to delivery, and the crop progress period. Some of these effects vary across delivery horizons. Further, it is shown that the price volatility is higher before the harvest starts in most of the cases compared to the volatility during the planting period. These results have implications for hedging, options pricing, and the setting of margin requirements. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bayesian econometrics; Futures markets; Seasonality; Theory of storage; Volatility; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Consumer/Household Economics; Demand and Price Analysis; Farm Management; Financial Economics; Marketing; Research Methods/ Statistical Methods; Risk and Uncertainty. |
| Ano: 2009 |
URL: http://purl.umn.edu/53036 |
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| Dorfman, Jeffrey H.; Karali, Berna. |
| Hedging is one of the most important risk management decisions that farmers make and has a potentially large role in the level of profit eventually earned from farming. Using panel data from a survey of Georgia farmers that recorded their hedging decisions for four years on three crops we examine the role of habit, demographics, farm characteristics, and information sources on the hedging decisions made by 106 different farmers. We find that the role of habit varies widely. Information sources are shown to have significant and large effects on the chosen hedge ratios. The farmer's education level, attitude toward technology adoption, farm profitability, and the ratio of acres owned to acres farmed also play important roles in hedging decisions. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Bayesian econometrics; Hedging decisions; Habit formation; Information sources; Agricultural Finance. |
| Ano: 2008 |
URL: http://purl.umn.edu/37596 |
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| Registros recuperados: 12 | |
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