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Bond Index Funds Explained
Bond index funds provide diversified exposure to fixed-income securities, typically used to balance risk within a broader portfolio alongside stock holdings.
Why Include Bonds in a Portfolio
Bonds generally exhibit lower volatility than stocks and often move differently during market downturns, providing a stabilizing effect — the specific bond allocation typically increases as an investor's timeline shortens (like approaching retirement).
Popular Bond Index Funds
| Fund | Expense Ratio | Focus |
|---|---|---|
| Vanguard Total Bond Market (BND) | 0.03% | Broad US investment-grade bonds |
| iShares Core US Aggregate Bond (AGG) | 0.03% | Broad US investment-grade bonds |
Bond Funds vs. Individual Bonds
Bond index funds offer diversification across many individual bonds and easier liquidity than holding individual bonds directly, though they don't have a fixed maturity date the way an individual bond does.
Common Mistakes
Assuming bonds are risk-free — bond funds can still lose value, particularly when interest rates rise, since bond prices generally move inversely to rates.
Frequently Asked Questions
This depends on your timeline and risk tolerance — younger investors with a long time horizon often hold little to no bonds, gradually increasing bond allocation as they approach their goal date.
Yes — bond fund values can decline, particularly when interest rates rise, since existing bond prices generally move inversely to rate changes.