NISM-Series-XXI-A: Portfolio Management Services (PMS) Distributors · Investing in Fixed Income Securities (NISM XXI-A)

Fixed Income Portfolio Strategies: Ladder, Barbell, Bullet and Immunisation

Updated 11 October 2026 · Fact-checked

Fixed income portfolio strategies are ways to arrange bond holdings to meet a goal. Passive ones, such as buy and hold, laddering and immunisation, do not rely on rate forecasts. Active ones, such as riding the yield curve, barbell and bullet positioning, act on a view about rates. Match the strategy to the goal in the question.

Understand Fixed Income Portfolio Strategies

A bond portfolio manager decides which maturities to hold and how long to hold them. The choice of strategy depends on the goal: steady income, protection from rate changes, meeting a future payment, or beating a benchmark.

Strategies fall into two groups. Passive strategies do not depend on a forecast of interest rates. Active strategies try to earn extra return from a view on interest rates, the yield curve or credit spreads. Active management can add return but also adds risk if the view is wrong.

Buy and hold: you buy bonds and keep them to maturity. Income and principal are known if the issuer does not default. Trading costs are low. It is passive, though the bonds are chosen with care.

Laddering: you spread money roughly equally across bonds of different maturities, such as 1, 2, 3, 4 and 5 years. When the shortest bond matures, you reinvest in a new longest-maturity bond. This gives regular cash flow, averages reinvestment rates, and needs no rate forecast.

Bullet and barbell are about where maturities sit. A bullet concentrates holdings around one maturity point, chosen to match a future need or a view. A barbell holds short-term and long-term bonds with little in the middle. The short end gives liquidity and reinvestment flexibility. The long end gives higher yield and more price sensitivity. For similar average maturity, a barbell generally has higher convexity than a bullet.

Immunisation protects a portfolio against interest rate changes so that it can meet a fixed liability at a known date. You set the portfolio's duration equal to the investment horizon (the time to the liability). Then price risk and reinvestment risk tend to offset each other. It needs rebalancing as time passes and rates change, and it works best for small parallel shifts in yields.

Riding the yield curve is an active strategy used when the curve is upward sloping. You buy a bond longer than your holding period and sell it before maturity. As time passes, the bond's remaining maturity shortens and it moves down the curve to a lower yield, so its price rises. The extra return depends on the curve staying unchanged. If yields rise, the strategy can lose money.

Key formulas to remember

Immunisation condition: Portfolio duration = investment horizon (time to liability); Price risk and reinvestment risk offset. Needs periodic rebalancing, and works best for small parallel yield shifts.
Ladder allocation: Equal amount in each maturity bucket; reinvest maturing proceeds at the long end; Gives regular cash flow and averages reinvestment rates.
Barbell vs bullet: Barbell: short + long maturities. Bullet: one maturity cluster; For similar duration, a barbell generally has higher convexity than a bullet.
Riding the yield curve: Buy maturity longer than horizon; sell at horizon; gain from roll-down on an upward-sloping curve; Active strategy. Loses if yields rise more than the roll-down gain.
Passive vs active: Passive: no rate view (buy and hold, ladder, immunisation, indexing). Active: rate or curve view; Classify first when a question asks which type a strategy is.

How to solve Fixed Income Portfolio Strategies questions

Most questions give a goal or a market view and ask which strategy fits, or ask you to describe a strategy. Use this method.

1Underline the goal: income, liability matching, liquidity, return enhancement or beating a benchmark.
2Check whether a rate or yield curve view is stated. A view points to an active strategy. No view points to a passive one.
3Look for a fixed future liability and a date. That points to immunisation, with duration set equal to the horizon.
4Look at the maturity pattern. Equal spread means ladder, one cluster means bullet, short plus long means barbell.
5Check the curve shape. An upward-sloping curve and a holding period shorter than maturity point to riding the yield curve.
6Eliminate options that mix up features, such as calling a ladder active or saying immunisation needs no rebalancing.
7Pick the option that matches the goal and the stated conditions exactly.

Quickest way: Keyword matching

When to use it: Use this for short definition or match-the-strategy MCQs when time is tight.

Equal maturities, regular cash flow: ladder.
Short and long, nothing in the middle: barbell.
Single maturity point: bullet.
Duration equals horizon, fixed liability: immunisation.
Upward-sloping curve, sell before maturity: riding the yield curve.
Hold to maturity, no trading: buy and hold.

Common mistakes in Fixed Income Portfolio Strategies

Calling a ladder an active strategy
Reinvesting maturing bonds feels like trading.
Fix: A ladder follows a fixed rule and needs no rate forecast, so it is passive.
Setting duration equal to maturity of the bonds for immunisation
Students mix up duration and maturity.
Fix: Immunisation sets portfolio duration equal to the investment horizon, not to the maturity of each bond.
Thinking immunisation needs no further action
The word suggests permanent protection.
Fix: Duration changes with time and yields, so the portfolio must be rebalanced to keep duration matched to the remaining horizon.
Confusing barbell and bullet
Both describe maturity shapes and the names sound similar.
Fix: Bullet is one cluster. Barbell is two extremes, short and long.
Assuming riding the yield curve always gains
Roll-down is shown on a stable curve in textbooks.
Fix: The gain assumes the curve stays unchanged. If yields rise, the bond price can fall by more than the roll-down gain.

Worked examples

Example 1

A provident fund needs to pay a fixed liability in 6 years and wants to protect it from interest rate changes without forecasting rates. Which strategy fits, and what is the key condition?
A. Barbell with equal short and long bonds
B. Immunisation with portfolio duration equal to 6 years
C. Riding the yield curve with long bonds
D. Bullet with all bonds maturing in 1 year

Show the solution

The goal is meeting a fixed liability at a known date, with no rate view.
That points to immunisation, a passive strategy.
The condition is portfolio duration equal to the investment horizon, which is 6 years.
Option A has no duration match, C is an active strategy using a view, and D has a maturity far from the horizon.

Answer: B. Immunisation with portfolio duration equal to 6 years.

Example 2

An investor has ₹5,00,000 to invest in a ladder across 5 maturities of 1 to 5 years with equal amounts. How much goes into each maturity, and what does she do when the 1-year bond matures?

Show the solution

Equal allocation across 5 buckets: ₹5,00,000 ÷ 5 = ₹1,00,000 per maturity.
When the 1-year bond matures, the ladder now has bonds of 1 to 4 years remaining.
To restore the ladder, she reinvests the proceeds in a new 5-year bond, the longest maturity.
This keeps the pattern and gives regular maturities without any rate forecast.

Answer: ₹1,00,000 in each maturity. She reinvests the maturing proceeds in a new longest-maturity (5-year) bond.

Exam tips

Learn one-line keywords for each strategy. Most questions test recognition.
Always sort a strategy into passive or active first. This removes two options quickly.
For immunisation, remember the pairing: duration equals horizon, plus rebalancing.
Watch absolute words like always and never in options. Riding the yield curve and barbell claims are conditional.
Check the negative marking of your paper before guessing. PMS Distributors XXI-A deducts 10% of the marks for a wrong answer.

Practice questions from Investing in Fixed Income Securities (NISM XXI-A)

Fixed Income Portfolio Strategies in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Fixed Income Portfolio Strategies: frequently asked questions

What is the difference between a barbell and a bullet strategy?

A bullet holds bonds clustered around one maturity. A barbell holds short-term and long-term bonds with little in the middle. A barbell generally has higher convexity than a bullet of similar duration.

What is immunisation in a bond portfolio?

It is a passive strategy that sets portfolio duration equal to the investment horizon. Price risk and reinvestment risk then tend to offset, so a fixed liability can be met. It needs periodic rebalancing.

Is buy and hold active or passive?

It is passive. You hold bonds to maturity and do not trade on rate forecasts. Returns are known at purchase if the issuer does not default.

When does riding the yield curve work?

It works when the yield curve is upward sloping and stays unchanged. You buy a bond longer than your holding period and sell it before maturity. A rise in yields can wipe out the gain.