Why is it important?
Investments do not all react the same way to the same events. While one part of the market may fall, another may remain more stable or even rise. Combining assets with different characteristics can reduce the effect that one decline has on the portfolio as a whole.
Diversification does not guarantee profits or prevent losses. Its purpose is to help you manage risk and prevent one decision from determining your entire result.
Three ways to diversify
What role can each instrument play?
- Fixed income: instruments such as CETES, bonds, or promissory notes may offer known terms and timeframes, although they still carry inflation, interest-rate, credit, or liquidity risk.
- Stocks: allow investors to participate in the growth of companies, but their prices can fluctuate and produce losses.
- ETF: an exchange-traded fund can hold many stocks, bonds, or other assets. It may make diversification easier, but you still need to review what it contains; owning several ETFs does not help if they are concentrated in the same companies.
- FIBRAs or REITs: provide exposure to income-producing real estate, although their value and distributions can change.
- Cash: provides liquidity for emergencies or opportunities, but inflation may reduce its purchasing power. An emergency fund should remain separate from money intended for investing.
A simple example
Imagine a portfolio invested only in technology stocks from one country. Even if it owns several companies, it still depends heavily on the same sector and market. Adding fixed income, companies from other sectors, and exposure to other regions means each part responds to different factors.
The right combination is not the same for everyone. It depends on the goal, timeframe, need for liquidity, and ability to tolerate losses. Someone who will need the money soon generally should not take the same risk as a person with a horizon of many years.
Common mistakes
- Assuming that owning many investments always means being diversified.
- Holding several funds or ETFs that contain nearly the same companies.
- Concentrating too much money in your employer, one sector, or one country.
- Choosing investments without understanding their costs, risks, or liquidity.
- Failing to review the portfolio after one holding grows enough to change the planned allocation.
How to begin
- Define your goal and timeframe. Decide why you are investing and when you may need the money.
- Understand your risk tolerance. Consider how much your portfolio could fall without endangering your needs or causing you to abandon the plan.
- Review what you already own. Look at the companies, sectors, countries, and asset types inside every fund or investment.
- Give each part a purpose. Decide whether it is intended for growth, income, stability, or liquidity.
- Review and rebalance. Periodically compare the current allocation with your plan and adjust only when needed.
Additional educational resource: Asset Allocation and Diversification — Investor.gov.
