You Bought the Bond — Now What Should You Actually Track?

This is the most fundamental relationship in fixed income investing: when interest rates fall, existing bond prices rise. When rates rise, existing bond prices fall. It's an inverse relationship, and in Zambia's current easing cycle, it has very specific implications.

If you hold a 10-year GRZ bond with a coupon of 17.59% — the rate available at the February 2026 auction — and yields continue their downward trend toward the 16.6% range recorded in later auctions, the market value of your bond has increased. You locked in a rate that new buyers can no longer access. That is a paper gain you could potentially realise if you sell on the secondary market.

Track the yield offered at each new auction. Compare it to the coupon on your existing bond. The spread tells you whether you're holding a premium bond (yours pays more than new issuances) or whether the market has moved against you. This isn't academic — it directly informs whether holding to maturity remains the best decision for your portfolio, or whether selling in the secondary market at a premium could deliver better outcomes.

The Bank of Zambia's Monetary Policy Committee meets every quarter. Their decisions on the policy rate set the direction of the entire yield curve. In the current cycle, the committee has been cutting rates — 75 basis points in February, another 25 in May 2026 — and markets are pricing in further easing as inflation converges to target.

Every investor with Zambian government bonds should mark their calendar for MPC announcement dates. Not to trade nervously, but to understand the macro direction. A rate cut means new bonds will be issued at lower yields, increasing the relative value of what you already hold. A rate hold or a surprise hike changes that calculus entirely.

This is where many investors deceive themselves without realising it. A 16% coupon sounds excellent. But the question that matters is: 16% relative to what?

The real return on a Zambian government bond is calculated using the Fisher equation: Real Return = ((1 + Nominal Yield) ÷ (1 + Inflation Rate)) − 1. Additionally, bond income in Zambia is subject to 20% withholding tax, further reducing the effective yield.

Running the full calculation for a 10-year bond at 16.6% nominal yield, with 20% WHT and 6.8% inflation: your real after-tax return is approximately 6.9%. Comfortable — but far less breathtaking than the headline number suggests, and worth knowing precisely.

GRZ bonds pay coupons semi-annually — every six months from the issue date. This sounds simple, but many retail investors are genuinely surprised when their coupon arrives and uncertain about what to do with it.

Know your payment dates precisely. Track them in your calendar. When the funds arrive in your account, the question is not "great, money" — the question is "what does this coupon now buy me?" In a falling yield environment, every coupon you receive is an opportunity to reinvest at whatever rates are available in the next auction. The yields available today may not be available in six months. That is the reinvestment risk embedded in every bond.

Sophisticated bond investors don't just collect coupons. They have a plan for them. The coupon is not the end of the return — it is an opportunity to compound it.

In Zambia's current environment, where T-bill yields sit around 11.45% at the 91-day tenor and bond yields are declining, the optimal reinvestment choice depends on your time horizon, tax situation, and market outlook. A 91-day T-bill is liquid and accessible with minimum bids starting at K1,000. A longer-dated bond locks in today's still-elevated yield for years. Treasury bills and bonds are not competing products — they can work together in a laddered strategy that keeps your portfolio both liquid and yield-optimised.

Are all your investable assets in a single bond tenor? That is a risk that doesn't announce itself until it's too late. Concentration in a single maturity bucket means your entire portfolio reprices at once — either as a windfall or as a loss, depending on the direction of rates at that moment.

Deliberately diversify across tenors. Hold some 2-year and 3-year bonds for shorter-cycle liquidity, some 7-year and 10-year for higher coupon income, and consider the 15-year only if your investment horizon genuinely matches the maturity. Check your allocation quarterly and ask: if rates moved 200 basis points in either direction, which part of this portfolio would suffer most?

GRZ bonds cannot be redeemed early at the Bank of Zambia. If you need K500,000 in three years and it is locked in a 10-year bond, you must either wait or sell in the secondary market at whatever price a willing buyer offers. In Zambia's secondary market, that buyer may not always be easy to find at short notice — and the price may not reflect your expectations.

Before investing in any bond tenor, map your expected cash needs against your investment timeline. Reserve enough in liquid instruments — savings, T-bills, money market funds — to cover your horizon-1 and horizon-2 needs without touching the bond portfolio. Then let the bond portfolio compound undisturbed.

The LuSE-administered secondary market for GRZ bonds exists and is functional, though thin by the standards of more mature markets. Knowing this market exists matters for two reasons: first, it gives you an exit if your circumstances change unexpectedly; second, it creates opportunity when you know what you're looking at.

When yields at primary auction fall sharply — as they did from the February highs to the April 2026 lows — investors holding higher-coupon bonds from earlier auctions are holding instruments that trade at a premium in the secondary market. That premium is a source of capital gain that many retail bondholders never think about, let alone act on.

Duration is the bond investor's sensitivity metric. It measures how much the price of your bond will change in response to a 1% move in interest rates. A 10-year bond has considerably more duration risk than a 2-year bond. In a falling rate environment, that's a feature — it amplifies your capital gains. In a rising rate environment, it's a liability.

In 2026, as Zambia continues its easing cycle, longer-duration bonds are likely to appreciate further in market value. But investors should understand that duration cuts both ways. If global conditions shift, if the fiscal picture deteriorates, or if inflation reverses sharply, the same long-duration bonds that are winners today could become sources of unrealised losses tomorrow.

Know the duration of what you hold. Adjust your mix as your view of the rate cycle evolves.

This is the factor most retail investors in Zambia have never thought to track — and it may be the most structurally consequential development in the bond market in years.

In January 2026, the Bank of Zambia raised the cap on non-resident ownership of government securities from 5% to 23%. The impact was immediate and dramatic. February's auction drew K21.3 billion in bids — more than five times the amount offered, with foreign participation hitting 23% for the second consecutive month. The 10-year bond attracted K4.287 billion in bids on a K600 million offer. The 15-year drew K8.824 billion against K560 million on offer.

Foreign capital is now a significant force in Zambia's bond market. It compresses yields — because more demand for a fixed supply means buyers accept lower returns. For existing bondholders, that's excellent news: your bonds appreciate. But there is a risk on the other side of this trade. Foreign "hot money" can exit quickly when global risk sentiment shifts. Yields in Zambia's secondary market could spike sharply if foreign investors withdraw en masse, driven by dollar strength, commodity shocks, or emerging market risk aversion.

Smart investors track non-resident participation figures when they appear in BOZ auction results and central bank reports. A sudden decline in foreign participation is an early warning signal worth understanding.