latest posts

Academics have long debated the concept of time diversification, which questions whether time reduces the risk for stock investors or not. Prominent academics, led by Paul Samuelson, have shown (usually...

Consider a clairvoyant who can accurately predict two market parameters, Sharpe ratio and volatility, for the forthcoming 10-year period. Clairvoyant selects his stock allocation (leverage multiplier)...

Why would a skilled stock picker ever invest in more than a few of her best ideas? Isn’t diversification for those who don’t know what they are doing? It makes sense to think that a skilled stock picker...

Long-term investors measure growth rate, but eat compound wealth. The four determinants of terminal wealth ratio (randomly selected portfolio’s terminal wealth divided by benchmark terminal wealth) and...