What Happens to Stocks, Bonds, Gold, and the Dollar When Interest Rates Rise? [EN]

시장·투자

Rising interest rates usually weigh on stocks, existing bond prices, and gold, while supporting the currency whose rates rise relative to others. That rule is a starting point, not a forecast. Markets react to what was expected, why rates are rising, and what investors think comes next. For anyone holding Korean won and investing abroad, the USD/KRW exchange rate can also reverse or amplify the return on the underlying asset.

Information current as of September 9, 2026 Briefing on Money

Bank of Korea Base Rate: 3.00%; Decision on August 27, 2026
Federal funds target range: 3.50%–3.75%; Decision on July 29, 2026
Basis-point conversion: 100 bp = 1 pp; A one-percentage-point rate change

Four channels connect interest rates to asset prices

A policy-rate increase does not travel straight from a central-bank announcement to every portfolio. It first changes short-term rates and expectations for future rates. Those changes then affect discount rates, borrowing costs, the return available on cash and bonds, and the relative attraction of one currency over another.

The main transmission channel for each asset
Asset	Main channel	Textbook response to higher rates
Stocks	Discount rate and corporate cash flow	Downward pressure
Existing fixed-rate bonds	Competition from new, higher-yielding bonds	Prices fall and yields rise
Gold	Real yields, the dollar, and opportunity cost	Downward pressure
US dollar	Relative rates and global demand for dollar assets	Upward pressure if US rates rise more

Why higher rates can lower stock valuations

A stock represents a claim on future cash flows. Investors convert those future cash flows into a value today by applying a discount rate. When the risk-free rate rises, the return investors demand from stocks often rises as well. The same expected profits are then worth less in present-value terms.

Consider a deliberately simple example. A payment of 100 received ten years from now is worth about 67.56 today at a 4% discount rate. At 6%, its present value is about 55.84, or 17.3% less. This is not a stock-price forecast, but it shows why companies valued mainly on distant profits can be unusually rate-sensitive.

Higher rates can also affect the profits themselves. Corporate loans and refinancing become more expensive, consumers devote more income to debt service, and investment may slow. Highly leveraged companies and businesses that need repeated external financing are usually more exposed than cash-rich firms with strong current earnings.

Why stocks sometimes rise during a rate-hiking cycle

The reason for the hike matters. If rates are rising because growth and corporate earnings are stronger than expected, better profits may outweigh the valuation headwind. Some banks can initially benefit from wider interest margins, although that advantage may disappear if high rates lead to defaults and a downturn. There is no rule that every sector must move together.

Bond prices and yields move in opposite directions

Suppose an existing bond pays a fixed 3% coupon. If comparable new bonds begin offering 4%, investors will not pay the old price for the 3% bond. Its market price must fall until the return available to a new buyer becomes competitive. This inverse relationship between market yields and fixed-rate bond prices applies even to high-quality government bonds.

Duration provides a rough measure of the sensitivity. If a bond has a modified duration of seven, a one-percentage-point rise in yield implies an approximate 7% price decline before allowing for convexity and other factors. Longer-maturity, lower-coupon bonds generally have greater interest-rate risk.

A rate increase creates both a loss and a reinvestment opportunity

A holder sees an immediate mark-to-market loss, but future coupons and maturing principal can be reinvested at higher yields. An investor who owns an individual bond, holds it to maturity, and receives all promised payments faces a different outcome from someone who must sell early.

A bond fund is not the same as a single bond with a known maturity date. Its net asset value reflects the market prices of many bonds, and the portfolio continues replacing securities. Investors should check duration, credit quality, distribution yield, and the fund's mandate rather than assuming that “bonds return principal at maturity.”

For gold, real interest rates matter more than the headline rate

Gold pays no coupon or dividend. When inflation-adjusted yields on safe assets rise, investors give up more income by holding gold. A stronger dollar can add pressure because the international gold price is quoted in US dollars.

The key comparison is the real rate, which can be approximated as the nominal interest rate minus expected inflation. A nominal rate increase does not necessarily tighten real financial conditions if inflation expectations rise by even more. That is one reason gold may rise at the same time as a central bank raises its policy rate.

The World Gold Council's July 2026 analysis found that the dollar, real policy rates, recession risk, and inflation all help explain gold returns. It also highlighted demand from central banks and Asian investors as forces that can operate independently of US rates. In a financial or geopolitical shock, safe-haven demand may outweigh the opportunity-cost effect.

The dollar responds to relative rates, not rates in isolation

If expected US rates rise while rate expectations elsewhere do not, dollar-denominated cash and bonds become relatively more attractive. Capital flows and hedging demand can then support the dollar. An unexpected increase in the expected US rate path often matters more than a widely anticipated decision.

The comparison changes when another central bank is more aggressive. If the Bank of Korea surprises markets with tighter policy while the Federal Reserve outlook is unchanged, the won may strengthen and USD/KRW may fall. A higher USD/KRW rate means that one dollar costs more won, which is dollar appreciation and won depreciation.

Interest differentials are not a complete exchange-rate model. Federal Reserve research on the global tightening cycle found that risk appetite, terms of trade, expected returns on other assets, and investor preferences also helped explain currency movements. During a global rush for liquidity, the dollar can strengthen even when US rate expectations are falling.

Why the market can do the opposite of the textbook

Financial markets price probabilities before a central bank meets. If investors expect a 0.50-percentage-point increase and the central bank delivers only 0.25 percentage point, the decision is an increase in level but may be interpreted as dovish relative to expectations. Stocks and bonds can rally, gold can rise, and the currency can weaken.

Four checks before interpreting a market reaction
Question	Why it changes the answer
Was the move expected?	An anticipated hike may already be fully priced.
What caused the hike?	Strong growth can support earnings; an inflation shock can damage both growth and valuations.
Which part of the yield curve moved?	A policy rate can rise while long-term yields fall on recession expectations.
What happened abroad?	Currencies react to relative policy expectations and global capital flows.

The September 2026 policy backdrop

The Bank of Korea raised its Base Rate from 2.75% to 3.00% on August 27, 2026. It cited above-target inflation, firm growth, and financial-stability risks. In the same statement, the Bank noted that major-country long-term government yields had risen while the US dollar weakened and global stock prices generally increased. That combination is a useful reminder that several forces can dominate the mechanical rate effect.

The Federal Open Market Committee's latest completed decision as of this article's reference date was on July 29, 2026. It maintained the federal funds target range at 3.50% to 3.75%. The next scheduled meeting is September 15–16, after this article's September 9 cutoff.

These policy rates describe the starting point; they are not trading signals. Investors still need to examine government-bond yields, real yields, earnings expectations, credit spreads, and exchange rates, along with how much of the expected policy path is already embedded in prices.

A Korean-won investor has two returns to track

The return on an unhedged foreign asset combines the asset's local-currency performance with the exchange-rate move. A US stock or Treasury bond may fall in dollar terms while a stronger dollar cushions the loss when converted into won. The reverse can also happen: a foreign asset gains locally, but won appreciation reduces the Korean investor's return.

Common scenarios and the variables that matter most
Scenario	Likely first-order effect	What could reverse it
Surprise US hike	Pressure on growth stocks, long bonds, and gold; support for the dollar	A stronger growth outlook or an even more hawkish response abroad
Orderly hikes with strong earnings	Bonds may weaken while stocks remain resilient	Rising defaults or a sharp slowdown in demand
Financial stress and recession fear	Stocks may fall while high-quality bonds, gold, and the dollar rise together	Rapid policy relief and a recovery in risk appetite
Korean rates reprice above US expectations	Pressure on Korean bonds but possible support for the won	Weak domestic growth or foreign capital outflows

These are simplified transmission paths, not price forecasts or guaranteed portfolio outcomes.

A checklist for reading the next rate decision

Separate the headline from the variables that price assets

Identify whether the news concerns a policy rate, a two-year yield, or a ten-year yield.
Compare the decision and guidance with market expectations before the announcement.
Ask whether growth, inflation, or financial instability caused the change.
For bonds, check maturity, modified duration, coupon, and credit quality.
For stocks, examine leverage, refinancing needs, current cash flow, and valuation.
For gold, track US real yields, the dollar, risk demand, and central-bank purchases.
For the dollar, compare expected US rates with rates in the relevant foreign country.
For foreign assets, separate local-market performance from the currency contribution.

Frequently asked questions

Do bond yields always rise when a central bank raises its policy rate?

No. Short rates are closely linked to policy, but long-term yields also reflect expected growth, inflation, future policy, and term premiums. Long yields can fall if the hike was expected or increases recession risk.

Are growth stocks always the worst performers when rates rise?

They are often more sensitive because more of their value depends on distant cash flows. Strong earnings, low debt, and a reasonable starting valuation can still offset some or all of that pressure.

How can gold rise on the day of a rate increase?

Real yields may have fallen, the dollar may have weakened, or the increase may have been smaller than expected. Safe-haven demand, inflation concerns, and central-bank purchases can also dominate the rate effect.

Does a US rate increase guarantee a higher USD/KRW exchange rate?

No. It may support the dollar, but the result also depends on expected Korean rates, risk sentiment, trade flows, foreign investment, and how much of the US move was already priced.

If I hold an individual bond to maturity, can I ignore a price decline?

The interim market price matters less if the issuer makes every promised payment and you do not need to sell. Credit risk and the opportunity cost of being locked into a lower coupon remain, and a bond fund does not offer the same fixed maturity outcome.

The rate move is only the first line of the story

The standard map is clear: higher discount rates weigh on stocks, higher market yields lower existing bond prices, higher real yields challenge gold, and higher relative US rates tend to support the dollar. Those relationships explain the first-order pressure, not every daily market move.

Expectations, the cause of the tightening, the shape of the yield curve, real rather than nominal rates, and cross-country rate differences determine which channel dominates. For a Korean-won investor, currency conversion adds another layer. Understanding those channels is more reliable than trading on the word “hike” alone.

Sources and further reading

Sources checked: September 9, 2026

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