The global bond market stands at $133 trillion, exceeding the $109 trillion global equity market according to SIFMA 2025 data. Yet most retail investors allocate little or nothing to fixed income, missing the volatility reduction, income generation, and capital preservation that bonds provide during equity downturns.
What Bonds Actually Are
A bond is a debt instrument: you lend money to an issuer (government, municipality, or corporation) who promises to pay a fixed interest rate (coupon) and return your principal at maturity. Unlike stocks, bonds have a defined endpoint and contractual cash flows, making them inherently more predictable. Treasury bonds are backed by the full faith and credit of the U.S. government, making them effectively risk-free for credit default.
The Inverse Price-Yield Relationship
Bond prices move inversely to interest rates. When the Federal Reserve raises rates, existing bonds with lower coupons become less attractive, pushing their prices down. Duration measures this sensitivity: a bond with 7-year duration loses approximately 7% in value for every 1% rate increase. This explains why bond funds can lose money even though the underlying bonds will eventually return par value at maturity.
Bonds in Portfolio Construction
During the 2008 financial crisis, a 60/40 stock/bond portfolio lost 22% compared to 37% for a 100% equity portfolio. During 2022, both stocks and bonds fell simultaneously, but the 60/40 portfolio still lost 16% versus 18% for pure equities. Bonds reduce portfolio volatility and provide rebalancing opportunities during equity drawdowns. For investors within 10-15 years of retirement, a 30-40% bond allocation provides meaningful downside protection without dramatically sacrificing long-term returns.
Originally published on WealthWise OS