What you can invest in depends on your time horizon and how much loss you can tolerate

The most common places to put money that you want to grow are stocks, bonds, mutual funds, exchange-traded funds (ETFs), and certificates of deposit (CDs). Each one carries a different level of risk and pays returns in different ways. Stocks can rise sharply or fall sharply over months. Bonds pay a fixed amount on a schedule and are less volatile. CDs lock your money away for a set time but may provide a return. Mutual funds and ETFs bundle many stocks or bonds together so you own a piece of many companies at once rather than betting on one.

The choice between them is not about which one is "best" — it is about matching what you own to when you will need the money and how much you can afford to lose. Someone saving for retirement 30 years away can ride out stock market drops. Someone who needs the money in two years should not own stocks at all.

Key Takeaways

  • Stocks and stock-based funds offer the highest growth potential over long periods but can lose value sharply in the short term.
  • Bonds and bond funds pay steady income and are less volatile than stocks, making them suitable for people closer to needing their money.
  • CDs may provide a return and protect your principal, but lock your money away and typically pay less than stocks or bonds over time.
  • Mutual funds and ETFs let you own pieces of many companies or bonds with a single purchase, spreading risk across many holdings.
  • Your age, when you need the money, and how much a loss would hurt you should guide which type of investment you choose.

Stocks: Higher growth, higher swings

When you buy a stock, you own a small piece of a company. If the company does well and grows, the stock price usually rises. If it struggles, the price falls. You can also receive dividends — small cash payments the company sends to shareholders — though not all stocks pay them.

Stocks have historically returned around 10% per year on average over very long periods (decades), but that average hides huge year-to-year swings. A stock can gain 50% in one year and lose 40% the next. Individual stocks are riskier than funds because your money rides on one company's performance. If you pick wrong, you lose. If you pick right, you gain a lot.

Most people do not pick individual stocks successfully. A more common approach is to buy a stock mutual fund or ETF, which owns hundreds of stocks at once. That way, if one company fails, it is a small dent in your overall holding.

Bonds: Steady payments with less volatility

A bond is a loan you make to a company or government. They promise to pay you interest on a schedule — often twice a year — and return your principal on a set date. A bond might pay 4% or 5% per year, and that payment does not change even if the company struggles.

Bonds are less volatile than stocks because you know what you will receive. The price of a bond can move if interest rates change, but if you hold it until maturity (the date they pay you back), you get your full principal back. Government bonds are safer than corporate bonds because governments rarely default. Corporate bonds pay higher interest to compensate for the extra risk.

Bond funds and bond ETFs work like stock funds — they hold many bonds so you are not betting on one issuer. They are common for people in or near retirement who need steady income and cannot afford big losses.

Certificates of Deposit: may provide returns with a time lock

A CD is an agreement with a bank or credit union. You give them a sum of money for a fixed period — three months, one year, five years — and they pay you a set interest rate. When the time is up, you get your money back plus the interest earned.

CDs are the safest option because the return is may provide and your principal is protected by federal insurance (up to $250,000 per account at each institution). The trade-off is that you cannot touch the money without penalty. If you withdraw early, the bank charges a fee that can wipe out most or all of your interest.

CD rates vary by bank and by term length. Longer terms usually pay more. You can shop rates at different banks — some online banks pay significantly more than brick-and-mortar branches. CDs make sense for money you know you will not need for a specific period and want to protect from market risk.

Mutual funds and ETFs: Diversification in one purchase

A mutual fund is a pool of money from many investors, managed by a professional who buys stocks, bonds, or both according to a stated strategy. An ETF (exchange-traded fund) works the same way but trades on a stock exchange like a stock does. Both let you own pieces of dozens or hundreds of holdings with one purchase.

The main difference is cost. Mutual funds often charge higher fees (called expense ratios) because they employ managers to pick holdings. Many ETFs are "passive" — they simply track an index like the S&P 500 — and charge much lower fees. Over decades, lower fees compound into real money saved.

You can find funds focused on stocks, bonds, or a mix of both. A "target-date fund" automatically shifts from stocks toward bonds as you approach a specific retirement year, so you do not have to rebalance manually. Most people building long-term wealth use low-cost index ETFs or index mutual funds because they are simple, diversified, and cheap.

Real estate and alternative investments

Real estate — owning rental property or buying a home — can build wealth over time through appreciation and rental income. It requires significant capital upfront, involves ongoing maintenance and tenant management, and is not liquid (you cannot sell quickly if you need cash). Real estate investment trusts (REITs) let you own pieces of real estate portfolios without managing property yourself, and they trade like stocks.

Other alternatives include commodities (gold, oil, agricultural products), peer-to-peer lending, and cryptocurrency. These are more speculative and less regulated than stocks or bonds. Most financial advisors suggest building a foundation in stocks, bonds, and funds before exploring alternatives.

How to think about risk and time horizon

Your age and when you need the money should drive your choices. If you are 25 and saving for retirement at 65, you have 40 years to recover from market downturns, so stocks or stock-heavy funds make sense. If you are 60 and retiring in five years, a big stock market drop could force you to delay retirement, so bonds and CDs are safer.

A common rule is to subtract your age from 110 or 120 — that percentage should be in stocks, the rest in bonds. So a 40-year-old might hold 70% to 80% stocks and 20% to 30% bonds. This is not a law, just a starting point. Your comfort with losses and your specific goals matter too.

Diversification — owning different types of investments — reduces the damage if one type performs poorly. A portfolio with only stocks can lose 50% in a bad year. A portfolio with 60% stocks and 40% bonds might lose only 25%. The bond portion cushions the fall.

Frequently Asked Questions

How much money do I need to start investing?

Most brokerages let you open an account with $0 and buy fractional shares of stocks or ETFs, meaning you can invest $50 or $100 at a time. Some mutual funds have $1,000 or $3,000 minimums, but many brokerages waive these if you set up automatic monthly deposits. Start with whatever amount you can afford to leave invested for at least five years.

Where do I actually buy stocks or funds?

You open an account at a brokerage — firms like Fidelity, Vanguard, Charles Schwab, or Webull. You link a bank account, deposit money, and then buy stocks, ETFs, or mutual funds through their platform. The brokerage holds your investments and sends you statements. Most charge no commission to buy or sell stocks or ETFs anymore.

Should I invest in individual stocks or funds?

Most people build wealth faster with low-cost index funds or ETFs than by picking individual stocks. Picking winners is hard — even professional managers rarely beat the market consistently. Funds give you instant diversification and require less research. Individual stocks make sense only if you have time to research companies and can afford to lose that money.

What is the difference between a taxable account and a retirement account?

A taxable brokerage account has no contribution limits and no restrictions on when you withdraw, but you owe taxes on gains and dividends each year. A retirement account like a 401(k) or IRA lets you invest pre-tax money (or contribute after-tax and withdraw tax-free later) and delays taxes until withdrawal, but you face penalties if you withdraw before age 59½. Most people max out retirement accounts first because the tax advantage is powerful over decades.

Can I lose all my money investing?

With stocks or stock funds, yes — the value can fall to zero if the company or fund fails, though this is rare for diversified funds. With bonds, you can lose money if you sell before maturity and interest rates have risen, but if you hold to maturity you get your principal back. With CDs, you cannot lose principal — the bank guarantees it. Diversification and a long time horizon reduce the odds of permanent loss.