JEL classification: C51 C52 G11

Assuming elliptically contoured distribution for portfolio asset returns, we derive the exact marginal and joint densities of the global minimum variance portfolio variance, and weights estimators. We also construct a test for the hypothesis that the global minimum variance is less then or equal to a certain value. A stochastic representation and moments of its estimator is provided. We illustr...

Abstract A total of 24 oat genotypes were evaluated across 9 environments using a randomized complete block design with 3 replications. The combined analysis variance indicated that grain yield was significantly affected by genotype, environment, and genotype environment interaction (GEI). environment's main effect explained 44.62% the variation, whereas GEI captured 28.84% 26.54%, respectively...

Abstract Many financial instruments are designed with embedded leverage, such as options and leveraged exchange-traded funds (ETFs). Embedded leverage alleviates investors’ constraints, and, therefore, we hypothesize that lowers required returns. Consistent this hypothesis, find empirically ETFs provide significant amounts of leverage; increases return volatility in proportion to the higher is ...

Abstract We exploit detailed transaction and position data for a sample of long-short equity hedge funds to study the trading activity fundamental investors. find that exhibit skill in opening positions, but they close their positions too early, thereby forgoing about one-third trades’ potential profitability. explain this behavior with limits arbitrage: early order reallocate capital more prof...

Abstract Portfolio performance measures using holdings data are panel regressions. The returns of a fund’s stocks regressed on its lagged portfolio weights. Stock fixed effects isolate average from time-series predictive ability. Control variables condition for fund the characteristics held. long-term drives some classical measures, while ability others. A “buy-and-hold drift,” where weights in...

Technical traders base their analysis on the premise that the patterns in market prices are assumed to recur in the future, and thus, these patterns can be used for predictive purposes. This paper uses the daily Dow Jones Industrial Average Index from 1897 to 1988 to examine the linear and nonlinear predictability of stock market returns with simple technical trading rules. The nonlinear specif...

This study aimed to identify promising crosses generate cowpea breeding populations for the Brazilian Cerrado region. The experiment was carried out during two crop seasons. experimental design used a randomized block with four replications and 20 genotypes prostrate. effect of significant all traits evaluated. Mahalanobis distance Tocher’s cluster were estimate genetic diversity. Singh’s crite...

Abstract In a factor timing context, academic research has focused on identifying set of predictors that can explain the dynamics portfolios. We propose an alternative approach for portfolio returns by exploiting information from their characteristics. Different combinations dimension reduction techniques are employed to independently reduce number both and portfolios predict. Characteristic-ba...