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Bond Risk & Investor Profile

Fixed-income debt securities come in many shapes and forms. You’ve learned about corporate, US government, and municipal securities in this unit. Now we’ll focus on the benefits, risks, and typical investors associated with these investments.

Benefits

  • Interest income is the primary benefit of bonds. Most bonds pay interest semiannually, and those interest payments are legal obligations of the issuer.
  • ⚠️ Unlike stock dividends, interest payments do not require approval by the Board of Directors (BOD). If an issuer misses an interest or principal payment, bondholders can take legal action, and the issuer may be forced into bankruptcy. Because of this legal obligation, bond income is generally more predictable than stock dividends.
  • Capital appreciation can occur, especially if interest rates fall. However, interest rate movements are difficult to predict, and bonds mature at par. If you hold a bond to maturity, you’ll receive the face (par) value at maturity. For that reason, most bond investors don’t focus on capital appreciation unless their bond is convertible.
  • Lower volatility (usually). While it isn’t always true, bond prices are often less volatile than stock prices. Since bond interest is a legal obligation and isn’t tied directly to a company’s profitability, price swings are typically smaller.

⚠️ Important exceptions to the lower-volatility rule:

  • If interest rates move sharply, bond prices can move sharply.
  • If an issuer is close to bankruptcy, the bond’s price can become very volatile.

Benefits by issuer type

IssuerBenefit
US Government securitiesConsidered among the safest securities in the world, especially since the government can create its own currency to repay its debts
Municipal securitiesTypically provide tax-free income if purchased by a resident
Corporate bondsOffer a wide range of choices, from large established companies to small start-ups

Systematic risks

Reminder: systematic risks affect a large portion of the overall market. For bonds, the two key systematic risks are interest rate risk and inflation (purchasing power) risk.

Systematic riskDefinitionMost susceptible bondsHow it’s reduced
Interest rate risk (a.k.a. market risk for bonds)Risk that interest rates rise, causing bond market prices to fallLong maturities, low couponsVariable rate bonds (per Key points)
Purchasing power (inflation) riskInflation reduces the real value of an investment’s cash flowsLonger maturitiesShort-term bonds / short-term securities

Interest rate risk

  • Earlier in this chapter, you learned about price volatility and duration, which both relate to interest rate risk. Bonds with long maturities and low coupons tend to move the most in price when market conditions change. In practice, bond prices are most commonly influenced by changes in interest rates.
  • Prices fall because older bonds with lower coupons must become cheaper to compete with newly issued bonds offering higher interest rates.
  • ⚠️ Interest rate risk applies to all fixed-income investments, including preferred stock.

Inflation (purchasing power) risk

  • Occurs when inflation reduces the real value of an investment’s cash flows.
  • Bonds are especially exposed because their coupons are fixed: investors receive a fixed dollar amount of interest over the life of the bond. If prices rise across the economy (for example, food, cars, and housing), that fixed interest payment buys less.
  • When inflation rises, the Federal Reserve (the central bank of the US) often raises interest rates to reduce borrowing and slow demand, which can help stabilize prices.
  • 🔑 This is why purchasing power risk and interest rate risk are closely connected: when interest rates rise, bond market prices fall.
  • Just like interest rate risk, purchasing power risk increases as maturity increases. One common way to reduce inflation risk is to use short-term bonds — when a short-term bond matures, you can reinvest the proceeds at current (potentially higher) interest rates instead of being locked into a lower rate for a long time.

Non-systematic risks

Non-systematic risks affect specific securities rather than the entire market.

RiskAlso calledDefinitionMost susceptible / example
Default riskCredit risk, repayment riskRisk that an issuer can’t make required interest and/or principal paymentsMost common cause is bankruptcy; e.g., the city of Detroit declared bankruptcy and defaulted on its bonds in 2013 — the largest default by a municipal (local government) issuer in US history
Liquidity riskMarketability riskRisk that a security can’t be sold quickly at a fair priceMunicipal bonds are known for liquidity risk
Legislative riskRisk that a new law or regulation (usually domestic) harms an investmentTariffs imposed by the Trump administration starting in 2018 increased the cost of doing business with certain foreign companies; investors holding securities tied to international trade experienced legislative risk when markets responded negatively to the trade war
Political riskRisk that government instability or a sudden change in government harms an investmentA Ukrainian bond could default if an unexpected military coup replaces the government; usually discussed as a foreign risk
Reinvestment riskRisk that you’ll have to reinvest cash flows at lower rates when interest rates fallBonds with high coupons, frequent interest payments, and callable features
Call riskA type of reinvestment riskOccurs when a callable bond is likely to be called (or is called)Bonds are most likely to be called when interest rates fall, because issuers can refinance by issuing new bonds at lower rates
Yield / opportunity cost risk (municipals)Tax-free income comes with the trade-off of lower yieldsAn investor in a low tax bracket should generally avoid municipal bonds

Default risk and bond ratings

  • Bankruptcy isn’t common, but it does happen. Corporations — and, more rarely, governments — can default on their debts. If you held a Detroit bond at the time, you likely lost a substantial amount of money.
  • 🔑 The three rating agencies to know for the exam:
Rating agency
Standard & Poors (S&P)
Moody’s
Fitch
  • Their rating symbols differ slightly, but all focus on default risk.

The page displays the agencies’ rating ladders as a graphic; the text extraction did not capture the individual symbols beyond the thresholds below.

CategoryRating thresholdDefault risk
Investment grade bondsBBB (Baa for Moody’s) or higherLittle to no default risk
Speculative bonds (junk bonds)BB (Ba for Moody’s) or lowerConsiderable default risk — the lower the rating, the higher the default risk

Know the Moody’s-vs-S&P/Fitch spelling difference: BBB = Baa and BB = Ba. This is the classic exam confusion point.

Liquidity risk detail

  • A bond with high liquidity risk may be difficult to sell at all, or it may require a deep discount. In general, the less desirable a bond is to other investors, the higher its liquidity risk. For example, if a company is close to bankruptcy, you may only be able to sell its bond at a steep discount (or not at all).
  • Municipal bonds are known for liquidity risk, largely because of their tax status. Since residents receive tax-free income, trading often stays within a smaller group of local buyers. The smaller the municipality, the fewer potential buyers.
  • In contrast, US Government securities trade globally and are among the most liquid investments in the world.

Reinvestment risk and call risk detail

  • Although bond prices generally rise when interest rates fall, reinvestment risk focuses on what happens to the cash you receive and then put back to work. Long-term investors often keep their money invested continuously. When a bond pays interest, that cash can be reinvested into new bonds (or more of the same bond). If interest rates have fallen, that reinvestment typically earns a lower return.
  • ⚠️ Call risk is often considered the worst form of reinvestment risk. Instead of reinvesting only the interest payments at lower rates, you must reinvest both the interest and the principal returned when the bond is called. Since the amount being reinvested is larger, the impact can be substantial.

Definitions

TermDefinitionExample
Opportunity costMonetary value of missed opportunitiesAn investor keeps their money in a short-term security yielding 3% instead of investing in a long-term security that provides a 10% return. The opportunity cost (missed return) is 7%.

Typical investor

Bonds vary widely in their risks and benefits. This section describes the typical bond investor in general terms.

  • Compared with stocks, bonds are often preferred by older, more conservative investors.
  • Because interest payments are a legal obligation of the issuer, bonds typically involve less risk than common stock, which usually means lower expected returns.
  • Investors who want predictable income often choose debt securities over equity (stock) securities.

🔑 Rule of 100

As a general guideline, the older an investor is, the more they allocate to fixed-income investments like bonds. The table from the suitability section of common stock:

AgeStock %Bond %
3070%30%
4555%45%
6040%60%
7030%70%

With bonds, the Rule of 100 is often stated this way: an investor’s age roughly matches the percentage of bonds in their portfolio.

⚠️ This is a general guideline, not a rule that always applies:

  • Some older investors can afford to take more risk (for example, an 80-year-old billionaire may choose a higher stock allocation).
  • Some younger investors are more risk-averse and prefer a larger bond allocation.
  • Use the Rule of 100 as a starting point, and expect exceptions.

Other suitability notes

  • ⚠️ Not all bonds are “safe.” Some bonds carry significant risk. Junk bonds and other high-risk debt securities often offer higher yields, but investors can lose substantial amounts if a default occurs.
  • Interest income is the primary reason most investors buy bonds. If an investor isn’t seeking income, another asset class may be more appropriate.
  • ⚠️ One exception: zero coupon bonds, which pay interest only at maturity. If an investor wants a predictable payout years in the future but doesn’t need income along the way, a long-term zero coupon bond may be suitable.

Key points

Bond benefits

  • Primary benefit is interest income
  • Interest payments are a legal obligation of the issuer
  • Capital appreciation may occur, especially if interest rates fall

Interest rate risk

  • Interest rates rise, forcing bond market prices down
  • Most susceptible bonds:
    • Long maturities
    • Low coupons
  • Avoided by variable rate bonds

Purchasing power (inflation) risk

  • Prices of goods and services rise, forcing bond prices down
  • Typically results in higher interest rates due to Federal Reserve actions
  • Avoided by short-term securities

Default risk

  • Also known as credit or repayment risk
  • Issuer unable to make required interest and/or principal payments

Bond ratings

  • Only consider default risk
  • Three bond rating organizations:
    • Standard & Poors (S&P)
    • Moody’s
    • Fitch
  • Investment grade bonds:
    • BBB or above
    • Low default risk
  • Speculative (junk) grade bonds:
    • BB or below
    • High default risk

Liquidity (marketability) risk

  • Security is difficult to sell or requires a large discount to sell
  • Typically affects municipal bonds

Legislative risk

  • New domestic law or regulation negatively affects a security

Political risk

  • Foreign government instability negatively affects a security

Reinvestment risk

  • Market returns reinvested at lower rates
  • Occurs when interest rates fall
  • High coupon bonds are most susceptible
  • Avoided by zero coupon bonds

Call risk

  • Bond called when interest rates fall
  • The worst form of reinvestment risk

Bond typical investors

  • Seeking income
  • Generally older, risk-averse (conservative)

Sources

Primary/official references for the material in this chapter. Every link was fetched and returned HTTP 200 on 2026-08-15.

#SourcePublisher
1Rule 2111 — suitability, reasonable-basis/customer-specific/quantitative FINRA
2Interest-rate risk — bond prices fall when rates rise, duration SEC
3Bonds — coupon, maturity, price/yield, credit risk SEC / Investor.gov
4Achievable Series 65 — chapter 1.2.15 Achievable (course text)
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