Beta-sorted portfolios - portfolios comprised of assets with similar covariation to selected risk factors - are a popular tool in empirical finance to analyze models of (conditional) expected returns. Despite their widespread use, little is known of their statistical properties in contrast to...

We develop and implement methods for determining whether relaxing sparsity constraints on portfolios improves the investment opportunity set for risk-averse investors. We formulate a new estimation procedure for sparse second-order stochastic spanning based on a greedy algorithm and Linear...

The 1924 Immigration Act excluded immigrants from economically developing countries to the point of their near total exclusion. Forty years later, the 1965 Immigration and Nationality Act eliminated most discriminatory county-of-origin barriers. America's doors opened and immigration from...

The 1924 Immigration Act excluded immigrants from economically developing countries to the point of their near total exclusion. Forty years later, the 1965 Immigration and Nationality Act eliminated most discriminatory county-of-origin barriers. America's doors opened and immigration from...

Fueling debates about the "quality" of immigrants from economically developing countries, empirical studies based on a well-respected methodology conclude that post-1965 immigrant men have low initial earnings and sluggish earnings growth. This methodology is based on flawed assumptions (Duleep,...

Fueling debates about the "quality" of immigrants from economically developing countries, empirical studies based on a well-respected methodology conclude that post-1965 immigrant men have low initial earnings and sluggish earnings growth. This methodology is based on flawed assumptions (Duleep,...

This paper deals with the conditional hazard estimator of a real response where the variable is given a functional random variable (i.e it takes values in an infinite-dimensional space). Specifically, we focus on the functional index model. This approach offers a good com- promise between...