The one-sentence test
A good way to gauge your portfolio's complexity: try to explain, in a single sentence, why you hold each instrument. If you can't do that clearly for one or more holdings, it's a sign the portfolio is probably more complicated than it needs to be. Understanding one thing well beats understanding four things poorly.
More complex alternatives: not bad, but not always necessary
Strategies such as the MSCI ACWI index (which also includes emerging markets), auto-rebalancing multi-asset ETFs, or dedicated bond funds aren't bad choices — some are excellent. But they add complexity (higher volatility and currency risk for ACWI, less flexibility for multi-asset funds, a learning curve for bonds) which, for someone starting out, often doesn't translate into a better outcome than a simple combination of MSCI World ETF + Cash.
When to add a Core-Satellite slice
If, once your Core portfolio (MSCI World + Cash) is settled, you feel the urge to explore specific themes — a sector, a country, a niche idea — you can do so with a small, separate Satellite slice, keeping your Core as a solid, understandable foundation. Simplicity in the Core isn't a compromise: it's what makes a strategy sustainable over time, even during the toughest market moments.
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