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?...

One of the most important decisions retirees need to make is the asset allocation of their portfolios. They can have a static or a dynamic allocation, and simplicity usually favors the former. Warren Buffett recently added another vote for static allocations by revealing that he had advised a...

Based on recent empirical evidence which suggests that as investors gain experience, their investment performance improves, we hypothesize that the specific mechanism through which experience translates into better investment returns is closely related to learning from investment mistakes. To...

We analyze a unique, comprehensive, multi-decade dataset of all communications with clients by a boutique investment advisory and investment management firm to explore the behavior of individuals involved in financial decision making. We propose and test a theory of self-regulation to explain...

For a market with m assets and T discrete trading sessions, Cover and Ordentlich (1998) found that the “Cost of Achieving the Best Rebalancing Rule in Hindsight” is p(T, m) = _{n₁ ···^Σ n_m=T} (n₁,^T...,n_m)(n₁/T)(n₁ · · · (n_m/T)^n_m. Their super-replicating strategy is impossible to compute...

Using data from year-end 2007 through year-end 2016, this report analyzes data on traditional IRA investors drawn from The IRA Investor Database to gain insight into how traditional IRA investors fared during and after the financial crisis. After setting the scene in terms of financial...

This report analyzes data on a group of consistent Roth IRA investors — those holding accounts with the same financial services provider at the end of each year from 2007 through 2016 — drawn from The IRA Investor Database to gain insight into how Roth IRA investors fared during and after...

We have developed a structural model to explain defined benefit (DB) pension funds' investment behaviour. The model is calibrated to the aggregate UK DB pension fund and four different cohorts of funds. We use the model to estimate how pension funds can be expected to adjust their asset...

Systematic, rules-based investment strategies are where academia and practice are currently interacting strongly. My objective in this editorial is to offer some thoughts on research on systematic investing, including three articles in this issue, that can provide significant practical benefits...