Stocks vs Bonds vs Cash
Three building blocks, one trade-off: safety versus the return you might earn.
Cash — safe, liquid, quietly shrinking
Cash (and cash-like savings) is the safest of the three: its nominal value doesn't swing around, and you can spend it instantly. The catch is the one from the last two lessons — inflation steadily erodes what it buys, so cash tends to earn the lowest long-run return.
Bonds — you're the lender
A bond is essentially a loan you make to a government or company. In return they promise to pay you interest and repay the amount at the end. You're a lender, not an owner. Bonds are generally less risky than stocks — but they're not risk-free: the borrower could struggle to repay, and a bond's market value falls when interest rates rise.
Stocks — you're an owner
A stock (or share) is a slice of ownership in a company, as you saw in 'How the Stock Market Works'. Owners share in the upside if the business does well — and bear the downside if it doesn't. Historically stocks have offered the highest expected long-run return of the three, in exchange for the largest swings in value, including the real possibility of loss.
Why hold a mix?
Because the three behave differently, many people hold a combination so that no single one dominates their outcome — cash for near-term needs and safety, bonds for steadier income, stocks for long-term growth. The right balance depends entirely on an individual's goals, time horizon and comfort with risk.
Check your understanding
- Cash: safest and most liquid, but inflation erodes it — lowest long-run return.
- Bonds: you're a lender paid interest; lower risk than stocks but not risk-free.
- Stocks: you're an owner with the highest expected return and the highest risk.
- The risk–return trade-off: more potential reward comes bundled with more risk, never a guarantee.