
Diversification means spreading your money across different investments instead of betting everything on a single company, country, sector, or asset class.
Imagine owning stocks of one airline. If that airline runs into trouble, your portfolio could take a painful hit. But if you own airlines, banks, tech firms, healthcare companies, government and corporate bonds, and other assets, one setback is less likely to derail your finances.
It's one of the oldest and most powerful investing ideas around: don't put all your eggs in one basket.

Nobel Prize-winning economist Harry Markowitz reportedly called diversification the "only free lunch" in investing. Why? Because it can reduce risk without necessarily reducing expected returns. A diversified portfolio is less exposed to:
• A single-company collapse • Problems in one industry • Economic trouble in one country • Sudden market shocks
This is one reason exchange-traded funds (ETFs) have become so popular. With a single, easy-access investment, you can gain exposure to hundreds or even thousands of products across sectors and regions.

Diversification reduces risk, but it doesn't eliminate it. If global markets fall together, many investments can drop at the same time. Safe havens may be hard to find or not easily available for retail investors.
Another mistake is over-diversification: