This paper investigates whether financial advisers add value to individual investors' portfolio decisions by comparing portfolios of advised and self-directed (execution-only) Dutch individual investors. The results indicate significant differences in characteristics and portfolios between these...

Warren Buffett has consistently advised investors to follow a simple approach, diversifying broadly and minimizing costs. In fact, he recommended the trustee that will manage his wife's bequest to stick to a simple 90-10 stock-bond portfolio. Is this a sensible strategy for retirees in general?...

This paper examines the relationship between overconfidence and losses from under-diversification among Dutch investors. We find that a lack of proper portfolio diversification is positively associated with overconfidence. Part of this relationship is mediated through the lower propensity of...