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Diversification: Why Not Putting All Your Eggs in One Basket Actually Works

Beginner Investing • 5 min

What this lesson is about

Diversification doesn't guarantee gains. It protects you from one bad bet wiping out everything else.

2 parts · a quick check after each · then the quiz

Part 1 of 2

Diversification won't guarantee you more money. It keeps one bad investment from sinking your whole portfolio. The math makes sense: different assets don’t always move together. When one asset dips, another uncorrelated asset is less likely to dip at the same time or by the same amount.

But there are limits. Diversification cuts down on company-specific risk, yet a broad market crash can still hit a diversified stock portfolio hard.

DiversificationChange the mix. Watch the swings shrink without the return going with them.

Quick check

What is diversification, in investing terms?

Part 2 of 2

Insider Angle: Holding 20 stocks in the same sector isn’t real diversification. If they all move together, it’s not effective. Real diversification combines assets that behave differently, not just a larger number of investments.
Try This: Take a look at a portfolio you know, yours, a friend's, or a hypothetical one. What percentage is tied up in a single stock or sector? Is that concentration intentional, or did it just happen over time?

Quick check

Why does diversification reduce risk, mathematically?

Quiz

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