Interest Rate Risk
Interest Rate Risk
The risk that a bond's market value will decline when interest rates rise, reflecting the inverse relationship between bond prices and yields. Interest rate risk is measured by duration, which estimates the percentage price change for each 1% change in interest rates. Bonds with longer maturities and lower coupon rates have greater interest rate risk because their cash flows are weighted further into the future.
When the Federal Reserve raises interest rates from 3% to 4%, a 20-year Treasury bond with a 3% coupon and duration of 14.5 years would lose approximately 14.5% of its value. Meanwhile, a 5-year Treasury with 5% coupon and duration of 4.5 years would only decline about 4.5%. The longer-term bond faces greater interest rate risk due to its extended maturity and lower coupon rate relative to new market rates.
Students often confuse the inverse relationship (thinking higher rates mean higher bond values), mix up duration with maturity (they measure different things), or fail to recognize that long-term bonds with low coupons face the most interest rate risk. Zero-coupon bonds have the highest interest rate risk for a given maturity because they have no coupon payments to cushion price volatility.
How This Is Tested
- Identifying which bonds have the greatest interest rate risk based on maturity and coupon characteristics
- Understanding the inverse relationship between interest rates and bond prices
- Using duration to compare interest rate risk across different bonds
- Recognizing that rising rate environments create the most risk for long-term, low-coupon bonds
- Applying interest rate risk concepts to client portfolio recommendations during different rate cycles
Regulatory Limits
| Description | Limit | Notes |
|---|---|---|
| Inverse price-yield relationship | Interest rates ↑ → Bond prices ↓ | Fundamental bond pricing principle tested frequently |
| Duration as primary risk measure | % price change per 1% rate change | Modified duration estimates percentage price sensitivity |
| Maturity impact on risk | Longer maturity = Greater interest rate risk | All else equal, longer bonds more sensitive to rate changes |
| Coupon impact on risk | Lower coupon = Greater interest rate risk | Inverse relationship: lower coupons mean higher price sensitivity |
Example Exam Questions
Test your understanding with these practice questions. Select an answer to see the explanation.
Marcus, a 45-year-old investor, is concerned about rising interest rates over the next two years and wants to minimize potential losses in his bond portfolio. He currently holds $200,000 in investment-grade bonds and seeks your advice. Which strategy would best address his concern about interest rate risk?
B is correct. When expecting rising interest rates, investors should reduce portfolio duration by moving into shorter-term bonds. Shorter maturities have less price sensitivity to rate changes, minimizing potential losses. This directly addresses Marcus's concern about interest rate risk while maintaining bond exposure.
A is incorrect and counterproductive: longer-term bonds have HIGHER interest rate risk (greater duration), not lower, and would experience larger price declines if rates rise as expected. C is incorrect; zero-coupon bonds have the HIGHEST interest rate risk for any given maturity because duration equals maturity with no coupon cushion. A 10-year zero would decline more than a 10-year coupon bond. D, while partially correct (floating-rate bonds do reduce interest rate risk), may be too extreme for Marcus who wants to minimize losses, not necessarily eliminate all fixed-rate exposure. B provides a balanced approach.
The Series 65 exam frequently tests your ability to recommend appropriate bond strategies based on interest rate expectations. Understanding that shorter duration reduces interest rate risk is critical for client portfolio management. Questions often present scenarios where clients express concerns about rising rates, requiring you to select strategies that minimize price volatility.
What is the primary characteristic of interest rate risk?
B is correct. Interest rate risk is the risk that a bond's market value will decline when interest rates rise, reflecting the fundamental inverse relationship between bond prices and yields. When rates rise, existing bonds paying lower rates become less valuable because investors can buy new bonds with higher yields.
A describes credit risk (default risk), not interest rate risk. C describes purchasing power risk (inflation risk), which is actually the opposite concern from interest rate risk. D describes liquidity risk, the inability to sell a security quickly without significant price concessions. Interest rate risk specifically refers to price changes driven by changes in market interest rates.
The Series 65 exam tests your ability to distinguish between different types of investment risks. Understanding the precise definition of interest rate risk and the inverse price-yield relationship is foundational for fixed-income analysis. Questions often require identifying which specific risk applies to a given scenario.
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D is correct. The 20-year zero-coupon bond has the highest interest rate risk because (1) it has a long maturity, and (2) zero-coupon bonds have duration equal to their maturity (20 years), making them extremely sensitive to rate changes. With no coupon payments to cushion volatility, the entire return depends on the final maturity value, which is heavily discounted when rates rise.
C (30-year municipal with 3% coupon) has high interest rate risk due to long maturity and low coupon, but its duration would be approximately 17-18 years, still less than the zero-coupon bond's 20-year duration. B (10-year corporate with 5% coupon) has moderate interest rate risk with duration around 7-8 years. A (5-year Treasury with 6% coupon) has the lowest interest rate risk among these options, with duration around 4-4.5 years. The combination of longest effective duration (20 years) and no coupon cushion makes D the highest risk.
The Series 65 exam tests your ability to compare interest rate risk across different bonds by evaluating maturity, coupon rate, and bond structure. Understanding that zero-coupon bonds have the highest risk for any given maturity is critical. Questions often present multiple bonds requiring you to identify which has the greatest or least interest rate risk.
All of the following statements about interest rate risk are accurate EXCEPT
C is correct (the EXCEPT answer). Bonds with higher coupon rates have LOWER interest rate risk, not greater risk. Higher coupons return more cash earlier through coupon payments, reducing duration and price sensitivity. This is an inverse relationship: higher coupon = lower interest rate risk.
A is accurate: the inverse relationship between bond prices and interest rates is fundamental. When rates rise, bond prices fall, and vice versa. B is accurate: longer maturity bonds have greater interest rate risk because their cash flows are weighted further into the future, resulting in longer duration and higher price sensitivity. D is accurate: duration is the standard measure of interest rate risk, estimating the percentage price change for each 1% change in yields.
The Series 65 exam tests comprehensive understanding of all factors affecting interest rate risk. Many students correctly remember that longer maturities increase risk but forget the inverse relationship with coupon rates. Understanding that higher coupons reduce interest rate risk (by shortening duration) is critical for bond selection and portfolio construction.
An investment adviser is explaining interest rate risk to a client who owns a 15-year corporate bond with a 4% coupon and modified duration of 11 years. Interest rates have just risen by 0.50%. Which of the following statements are accurate?
1. The bond's price will decline by approximately 5.5%
2. If the client holds the bond to maturity, they will receive the full par value
3. Selling the bond now would likely result in a capital loss
4. The bond's interest rate risk increases as it approaches maturity
B is correct. Statements 1, 2, and 3 are accurate.
Statement 1 is TRUE: Calculate price change using modified duration: -11 years × 0.50% = -5.5% approximate price decline. This is the primary application of duration for estimating interest rate risk impact.
Statement 2 is TRUE: Interest rate risk is a market value risk, not a credit risk. If the client holds the bond to maturity (assuming no default), they will receive the full par value regardless of interim interest rate movements. This is an important distinction between trading and holding to maturity.
Statement 3 is TRUE: Since rates rose and the bond's market value declined approximately 5.5%, selling now would result in a capital loss compared to the original purchase price (assuming it was bought near par).
Statement 4 is FALSE: Interest rate risk DECREASES as a bond approaches maturity, not increases. As maturity shortens, duration decreases, reducing price sensitivity to rate changes. A 15-year bond has much more interest rate risk than the same bond when it becomes a 5-year bond.
The Series 65 exam tests detailed understanding of how interest rate risk affects bond valuations and investor outcomes. You must know how to calculate price changes using duration, understand that holding to maturity eliminates market value risk (but not opportunity cost), and recognize that interest rate risk decreases over time. Questions often combine multiple concepts to test comprehensive knowledge.
💡 Memory Aid
Think of the "Interest Rate Seesaw": When rates go UP, bond prices go DOWN (inverse relationship). Long-term bonds with low coupons are like sitting far from the center: they swing the most when rates change. Duration = Your price swing: 10-year duration means roughly 10% price change for each 1% rate move. Remember: "Low and Long = Most Wrong" when rates rise (low coupon + long maturity = highest interest rate risk).
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This term is part of this cluster:
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This term is tested in the following Series 65 exam topics:
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