What is Diversification?
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Everyday Example
Imagine you run three food stalls — one selling ice cream, one selling umbrellas, and one selling coffee. On a hot day the ice cream stall booms. On a rainy day, umbrellas sell out. On a cold day, coffee wins. No single weather pattern can wipe out all three businesses at once. That's diversification.
publicReal-World Application
“Every major pension fund and institutional investor uses diversification as a foundational strategy. The classic 60/40 portfolio (60% stocks, 40% bonds) is the most famous example. Vanguard's research shows that a diversified global portfolio has delivered positive returns in 95% of rolling 10-year periods since 1926.”
Did you know?
The concept dates back to at least the Talmud, which advised splitting wealth into thirds: land, business, and reserves. Modern portfolio theory was formalised by Harry Markowitz in 1952, who proved mathematically that diversification can improve returns for a given level of risk — work that earned him the Nobel Prize in Economics.
Key Insight
Diversification doesn't eliminate all risk — it eliminates unnecessary risk. The risk that remains after full diversification is called systematic or market risk, and it's the price you pay for being in the market at all. The key insight: you're not rewarded for taking risks you could have diversified away.
How to Apply This
Check your current investments right now: if more than 30% is in one sector (e.g., tech stocks) or asset class (e.g., property), rebalance by moving some money into uncorrelated assets like bonds, international stocks, or commodities. This prevents a single downturn from wiping out your portfolio.
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