Portfolios
How Often Should You Rebalance a Long-Term Portfolio?
The evidence says the calendar matters far less than most investors assume — what matters is having a rule and following it without emotion.
Author
Samuel Achebe
Samuel Achebe covers science, research and education. His approach is to explain research by explaining its limits first — what a study can and cannot show — and he reports on research funding and peer review, teaching pay scales and exits, transferable study skills, and portfolio structure explained with the same evidence discipline.
Articles by Samuel Achebe
Portfolios
How Does SIPC Protect Investors When a Brokerage Fails?
SIPC replaces missing cash and securities up to set limits when a member brokerage collapses, but it never insures against a market decline.
Portfolios
How Portfolio Rebalancing Works, and What It Actually Fixes
Rebalancing does not chase higher returns. It resets a portfolio to the risk level an investor originally chose, and the evidence shows most of its benefit…
Portfolios
Asset Location: Which Accounts Should Hold Which Funds
The same three-fund portfolio can lose a fraction of a percent a year to taxes purely by sitting in the wrong accounts — placement is the quiet optimization.
Portfolios
The Real Risk of a Concentrated Single-Stock Position
A position worth 20% of your portfolio can halve your retirement date — the arithmetic of concentration, from Enron's employees to today's RSU holders.