We give an explicit algorithm and source code for combining alpha streams via bounded regression. In practical applications, typically, there is insufficient history to compute a sample covariance matrix (SCM) for a large number of alphas. To compute alpha allocation weights, one then resorts to...

This paper focuses on an unexplored dimension of fund managers' timing ability: market-wide tail risk implied by information in options markets. We investigate whether hedge fund managers can strategically time market tail risk implied by options through adjusting their portfolios' market...