What is Correlation in a Portfolio? A Simple Guide
Correlation measures how two investments move in relation to each other. High positive correlation means they move together; negative correlation means they move oppositely. Combining assets with low or negative correlation is what makes diversification effective.
Diversification works best when your investments do not all move together. Correlation is the measure that tells you how connected they are.
Read on for a simple breakdown built for beginners. You can explore mutual funds on Stockk.
Key Takeaways
- Correlation measures how two assets move together.
- High positive correlation means they move alike.
- Negative correlation means they move oppositely.
- Low correlation improves diversification.
- It is key to building a balanced portfolio.
What does correlation tell you?
Correlation ranges from strongly positive to strongly negative. Two assets that rise and fall together are positively correlated, so holding both adds little diversification. Assets that move oppositely, or independently, help balance a portfolio, since when one falls the other may hold up or rise.
Imagine equity and gold often move differently: when markets fall, gold sometimes rises. Combining them can smooth your portfolio, because their low or negative correlation offsets each other's swings.
How correlation affects diversification
| Correlation | Diversification benefit |
|---|---|
| High positive | Little benefit |
| Low or zero | Good benefit |
| Negative | Strong benefit |
Using correlation in practice
- Mix asset classes: equity, debt and gold often have low correlation
- Avoid overlap: many similar funds move together
- Balance risk: low-correlation assets smooth the ride
- Reassess over time: correlations can change
Why correlation matters
Simply holding many investments is not true diversification if they all move together. Correlation reveals whether your holdings genuinely balance each other. A portfolio of low-correlation assets is steadier, which is the real aim of diversification. This is why mixing asset classes works better than owning many similar funds.
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Mutual fund investments are subject to market risks. Read all scheme related documents carefully. Past performance is not a guarantee of future returns, and this article is for learning only, not investment advice.
Frequently Asked Questions
What does correlation measure?
It measures how two investments move in relation to each other, from moving together (positive) to moving oppositely (negative).
Why is low correlation good for a portfolio?
Because low or negative correlation means assets do not all fall together, so combining them smooths the overall ride and improves diversification.
Does holding many funds ensure diversification?
Not if they are highly correlated and move together. True diversification needs low-correlation assets, not just many similar holdings.
Can correlations change over time?
Yes, correlations shift with market conditions, so it is worth reassessing your mix periodically rather than assuming they stay fixed.
How do I use correlation when investing?
Combine low-correlation asset classes to balance risk, avoiding overlapping funds.
Investments in securities market are subject to market risks. This article is for educational purposes only and does not constitute investment advice.
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