Portfolios
How to Build a Three-Fund Portfolio in an Afternoon
One total US market fund, one total international fund, one total bond fund — three holdings that cover thousands of securities in most of the world's markets.
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
What Correlation Means for Portfolio Diversification
Diversification only works between assets that do not move together — and 2022 demonstrated that the stock-bond correlation everyone relied on is a regime, not…
Portfolios
Asset Allocation by Age: How to Actually Think About It
The old rule of thumb — subtract your age from 110 to get your stock percentage — starts the conversation, but horizon and human capital finish it.
Portfolios
The 60/40 Portfolio: What It Holds and Why It Endures
Sixty percent stocks for growth, forty percent bonds for ballast — a construction whose 2022 stress test explained both its vulnerability and its persistence.
Portfolios
How Often Should You Rebalance Your Portfolio
Vanguard's research found annual and threshold rebalancing produced nearly identical long-run results — the point is having bands at all, not tuning them.