Financial researchers agree that allocating money to employer stock in a 401(k) plan is a poor strategy, yet many employees do so. Not only does this investment strategy bear unrewarded idiosyncratic risk, but it also correlates employees' retirement portfolios with their human capital. I find...

We introduce a financial portfolio optimization framework that allows us to automatically select the relevant assets and estimate their weights by relying on a sorted L1-Norm penalization, henceforth SLOPE. Our approach is able to group constituents with similar correlation properties, and with...

"Standard" environmental economics considers emissions trading to be the most effective and efficient policy instrument to meet the emission target. However, a popular view is that tradeable permits should be part of a policy portfolio, including other instruments, to reach this goal. Support...

This paper develops a general continuous-time evolutionary finance model with time-dependent strategies. It is shown that the continuous model, which is a limit of a general discrete model, is well-defined and if there exists one completely diversified strategy in the market, then there is no...