Portfolio Construction · Bonds Explained

Understand what matures

An individual bond normally has a contractual maturity and principal repayment amount, subject to its terms and the issuer paying. A conventional bond fund owns a changing portfolio. Its shares generally do not promise repayment of your purchase price on a fixed date.

A fund can continually replace maturing securities and maintain a target duration. This keeps exposure available, but it differs from a single bond becoming progressively closer to maturity.

Compare the practical workload

An individual bond portfolio requires security selection, issuer monitoring, trade execution and reinvestment decisions. A fund performs these functions within its mandate, often making diversification easier for a smaller investment.

A fund still needs research. Read its holdings, duration, credit quality, currency exposure, fees and redemption structure. A narrow fund concentrated in one type of borrower may carry substantial common risk despite holding many securities.

Use a simple spending case

Imagine you need $10,000 on a specified future date. An appropriate individual bond with $10,000 scheduled principal near that date provides a visible contractual amount if the issuer pays. The purchase price may differ from $10,000.

Buying $10,000 of a conventional bond fund does not create an equivalent repayment promise. Its value on your spending date depends on portfolio performance. A target maturity fund has a planned wind down date, but its final distribution is not a guaranteed face value.

Compare complete costs

A fund’s expense ratio is one cost. Depending on structure, trading spreads, brokerage costs and deviations from net asset value can also matter. Individual bonds can involve dealer compensation, custody charges and costly reinvestment.

Match the vehicle to the job. A recurring allocation to a diversified bond market and a specific dated liability are different tasks. Evaluate both expected cash flows and adverse scenarios rather than declaring one structure universally superior.

Try it yourself

Does a fund holding only bonds maturing in a given year guarantee that your original investment will be returned in that year?

Show the worked answer

No. Credit outcomes, purchase prices, expenses and the final liquidation value affect distributions. A planned termination date is not a principal guarantee.

Further reading

Educational material. Examples are hypothetical and do not recommend a security or a personal allocation. Contract terms and market conventions vary.

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