Want an efficient portfolio? Try this model

Researchers have devised a method that could help some traders, including those managing large portfolios or those working in statistical arbitrage groups who are seeking to capitalize on pricing inefficiencies between securities. 

The price of policy uncertainty

Uncertainty is confounding by its very definition. In the economy, uncertainty can arise from a number of different corners, including wars, natural disasters, and, of course, government decisions—or indecision.