Global financial markets are starting the week under renewed pressure as oil prices approach $100 per barrel, increasing concerns that inflation could remain elevated and force major central banks to maintain tighter monetary policy.

The combination of escalating tensions in the Middle East, higher commodity prices and expectations of further interest rate hikes has weakened sentiment across global stock markets. At the same time, the Japanese Yen has emerged as one of the strongest-performing major currencies, reaching its highest level since February.

Investors are now turning their attention towards this week's US inflation data, which could significantly influence expectations for the Federal Reserve's September interest rate decision.

Oil Prices Rise as Middle East Supply Risks Increase

Energy markets remain at the centre of investor attention.

Brent crude climbed above $98 per barrel, approaching the psychologically important $100 level, while US WTI crude moved above $93.

The latest gains follow another escalation in tensions between the US and Iran, alongside attacks by Iran-backed Houthi forces in the Gulf region. Concerns have also increased over shipping through the Strait of Hormuz, one of the world’s most important routes for global energy supplies.

Any prolonged disruption to Gulf exports could keep oil supplies constrained and prices elevated.

Market analysts are increasingly considering the possibility that disruptions could continue beyond 2026. Goldman Sachs recently raised its oil forecasts after adjusting its assumptions regarding Middle East shipping disruptions.

For financial markets, however, the impact extends far beyond the energy sector.

Why Higher Oil Prices Are Increasing Inflation Concerns

Higher oil prices can increase transportation, production, and energy costs throughout the economy.

If businesses pass those higher costs on to consumers, inflation may become more persistent.

This is particularly important at a time when major central banks are already considering tighter monetary policy.

The rise in crude oil has therefore created a difficult environment for investors: stronger commodity prices increase the possibility that central banks may need to keep interest rates higher for longer.

Copper is adding to those concerns.

The industrial metal reached another record high, trading close to $14,600 per tonne, amid constrained supply and expectations surrounding potential US tariffs on refined copper imports.

With both energy and industrial commodity prices moving higher, investors are becoming increasingly sensitive to any signs that inflationary pressures are returning.

Global Stock Markets Come Under Pressure

Higher oil prices and rising interest rate expectations have weighed on global equities.

European markets moved lower during Tuesday’s session, while Asian markets also experienced widespread declines.

US stock futures pointed to a softer opening, with S&P 500 futures trading lower ahead of the return of US investors following Monday’s public holiday.

Higher interest rates generally represent a challenge for equity valuations because they increase borrowing costs for companies while making bonds and other interest-bearing assets relatively more attractive.

The effect has been particularly noticeable in Japan.

The Nikkei 225 fell around 1.7%, with several major exporters coming under pressure as the Japanese Yen strengthened sharply.

Japanese Yen Climbs to Highest Level Since February

The Japanese Yen has been one of the most significant movers in the currency market.

The Yen strengthened by as much as 1%, reaching approximately ¥152.9 against the US Dollar, its strongest level since February.

Several factors are supporting the currency.

Investors are increasing expectations that the Bank of Japan could accelerate monetary tightening, particularly following stronger Japanese wage figures.

Japanese real wages increased 2.4% year-on-year in July, their strongest increase since 2021. At the same time, Japan’s second-quarter economic growth was revised higher.

These developments strengthen the argument for further Bank of Japan interest rate increases.

The currency has also benefited from the unwinding of Yen-funded carry trades.

Carry trades typically involve borrowing in a low-interest-rate currency such as the Yen and investing the funds in higher-yielding assets elsewhere. When expectations for Japanese interest rates rise, these positions can become less attractive, encouraging traders to buy back the Yen.

Fed Rate Expectations Remain a Key Market Driver

The Federal Reserve remains another major source of uncertainty.

Markets are currently assigning roughly a 60% probability of another 25-basis-point interest rate increase at the Fed’s September meeting.

The rise in oil and commodity prices could strengthen the argument for tighter monetary policy if inflation shows signs of accelerating.

US Treasury yields have already reacted, with the benchmark 10-year yield moving towards 4.8%.

However, the next major clue is expected later this week.

US CPI Could Determine the Next Major Market Move

Investors will closely monitor US inflation figures over the coming days.

The Producer Price Index (PPI) is scheduled for Thursday, followed by the more closely watched Consumer Price Index (CPI) on Friday.

The CPI report could become one of the week’s most important catalysts.

A stronger-than-expected inflation reading could increase expectations of a September Federal Reserve rate hike, potentially supporting Treasury yields and the US Dollar while adding further pressure to equity markets. Conversely, weaker inflation could reduce expectations for additional tightening and provide some relief to risk assets.

Gold Holds Firm as Investors Watch Geopolitical Risks

Gold remained relatively resilient around $4,400 per ounce, supported by continued geopolitical uncertainty.

Normally, higher bond yields can weigh on non-yielding assets such as gold. However, concerns surrounding the Middle East conflict continue to support demand for defensive assets.

This leaves gold caught between two major forces: higher interest rate expectations on one side and geopolitical uncertainty on the other.

What Should Traders Watch Next?

The current market environment is being shaped by a clear chain of events:

Middle East tensions → higher oil prices → stronger inflation concerns → higher interest rate expectations → pressure on global stocks.

For traders, several markets are therefore worth monitoring closely.

Oil remains sensitive to any developments surrounding Iran, the Strait of Hormuz, and Gulf energy infrastructure.

The Japanese Yen could remain volatile as markets continue to reassess the outlook for Bank of Japan policy.

Meanwhile, Friday’s US CPI report could determine the next major move in the US Dollar, Gold, global stock indices and bond markets.

With geopolitical and monetary policy risks moving simultaneously, volatility could remain elevated across financial markets in the days ahead.