Diversification means spreading your money across many different investments so that no single one can sink your portfolio. If one company, industry or country has a bad stretch, the others can help cushion the blow.
The risk you can reduce
Every company carries its own risks: a failed product, a scandal, a new competitor. Holding just a handful of stocks leaves you exposed to those company-specific shocks. Holding hundreds or thousands, as a broad index fund does, makes any single company’s trouble a small part of the whole.
Diversification can’t remove market risk, the tendency of most investments to fall together in a broad downturn. That’s where asset allocation, your mix of stocks, bonds and cash, comes in.
Ways to diversify
- Across companies: own many companies instead of a few.
- Across industries: technology, healthcare, consumer goods, energy and more.
- Across countries: international holdings add exposure beyond your home market.
- Across asset types: combine stocks with bonds and cash.
- Across time: investing regularly, rather than all at once, spreads out your entry points.
Common diversification mistakes
- Owning many funds that hold the same thing. Three different large-company U.S. funds may overlap heavily. Check what’s inside.
- Too much in your employer’s stock. Your job and your savings then depend on the same company.
- Chasing last year’s winners. Piling into whatever just did best can quietly concentrate your risk.
Key takeaway
Diversification is one of the few ways to lower risk without necessarily giving up expected return. A few broad, low-cost funds can give you thousands of holdings, and index funds are an easy place to start.
This guide is for education only and isn’t personal financial advice. Investing involves risk, including the possible loss of money you invest. Example figures are illustrations, not predictions.