Global Market Outlook: U.S.-U.K. Tariff Risks and Oil Shocks Drive Volatility

War and tariffs are now shaping the same market story. The most recent U.S. tariff threat to the U.K. has reignited uncertainty on trade. On the other hand, the Persian Gulf crisis has led to higher oil prices and a renewed concern for inflation. This is a challenging environment for currencies, stocks, bonds and oil.

The U.K. is under pressure via exports, sterling and confidence. The U.S. is under pressure from oil inflation, high interest rates and mixed signals from equities. At the same time, liquidity is still supporting risk assets, and the Nasdaq 100 and S&P 500 are holding up. The market is not responding to one factor. They are balancing trade, war, oil, bond yields and central bank policy.

U.S.-U.K. Tariff Threat Revives Trade War Risk

President Donald Trump said that the U.S. could hit the U.K. with a “big tariff” if it continues with the Digital Services Tax. The tax levies a 2% charge on revenues from social media, search engine and online marketplace services related to U.K. users. The U.K. government said that the tax generated £800 million in 2024-2025.

This is significant because the competition is against major U.S. tech companies like Apple Inc. (AAPL), Alphabet Inc. (GOOG) and Meta Platforms Inc. (META). The U.S. sees it as unfair pressure on U.S. companies. The U.K. views it as a revenue grab on digital services operating in the U.K. There is clear clash of policies.

The timing also increases market sensitivity. The U.S. and U.K. signed a trade agreement last year but Trump has implied that trade deals are flexible. So investors can’t consider the previous agreement as locked in. The tariff threat also comes ahead of the planned U.S. visit of King Charles III and Queen Camilla.

How U.S. Tariffs Could Hit U.K. Exports and Business Confidence

The U.S. is a major market for U.K. exports. According to the USTR, U.S. imports from the U.K. amounted to $64.8 billion in 2025 and U.S. goods trade with the U.K. was $161.8 billion.

So the tariff threat is significant for the U.K. A new tariff would increase the price of U.K. goods in the U.S. This would reduce the demand for U.K. exports particularly in price-sensitive industries. It could also affect business sentiment if firms hold back orders and investment.

The impact could vary across sectors. Multinational corporations may pass on some of the costs. Small firms may be hurt. Even a tariff threat can also undermine confidence before a tariff even comes into force. Businesses will postpone orders, adjust contracts and include greater risk premiums.

According to the Office of National Statistics data, the value of U.K. goods exports to the U.S. stayed low in April 2025.

Currency Market Outlook: Tariffs and War Drive Volatility in Sterling, Euro and Dollar

GBP/USD Forecast: Trade Risk and U.S. Yields Test Sterling Strength

An escalation in the tariff battle could put pressure on GBP/USD. Tariffs would reduce the U.K. growth outlook because they could reduce demand for U.K. exports. That would reduce confidence in sterling.

But the U.S. dollar is also near support at 98 on the Dollar Index. If it falls below 98, it could fall to long-term support near 96. This will put a floor on GBP/USD, even if the risks in the U.K. rise.

So the setup is mixed. The risk of tariffs is negative for sterling. The weaker US dollar is positive for GBP/USD. It depends on which factor prevails. If the threat of tariffs translates into reality, GBP/USD may suffer. If the Dollar Index falls, GBP/USD may remain stable, despite the politics.

On the other hand, the higher U.S. Treasury yields are another factor. The yield on the 10-year is rebounding from the strong bottom at 4.25%. This rally indicates a potential move to 4.5%. Rising U.S. yields tend to support the dollar. That would be bad for GBP/USD, particularly if combined with a deterioration in U.K. trade sentiment.

From a technical perspective, the GBP/USD is consolidating with a slight bullish bias above 1.32. Since the price remains above the 50 and 200-day SMAs and RSI is consolidating above the mid level. This structure suggests a positive tone in the pair. However, the pair needs to break above 1.3780 to confirm the bullish momentum. This bullish momentum will likely kick in when the US dollar index breaks below 96.

EUR/GBP Forecast: U.K. Tariff Risk Could Support the Euro Against Sterling

EUR/GBP may rise if this dispute is viewed as a U.K. shock. The euro could strengthen relative to the pound if the tariff threat is more aimed at the U.K. than the eurozone.

This isn’t to say the euro is risk free. The world could still be worse off. But here the threat is to the U.K. This provides an upward opportunity for EUR/GBP, if the market factors in lower U.K. exports, growth and policy uncertainty.

It could also respond to relative interest rate expectations. If tariffs hurt the U.K. economy, investors will expect the Bank of England to ease. That would weigh on sterling. EUR/GBP would then gain more bullish momentum.

From technical perspective, the pair remains tight within the triangle formation between 0.86 and 0.8730. A break of any of these levels is required to define the next move. Despite the tariff threat, sterling is showing strength in the short term as the EURGBP is moving towards the triangle support at 0.86.

U.S. Dollar Index Forecast: Support Holds Key as Oil and Yields Rise

The U.S. Dollar Index rebounds from the support level at 98. This is significant as it could mark another decline to 96. The dollar’s weakness would normally be a positive for global risk assets and commodities.

However, the situation is not so straightforward. Crude oil prices are higher because peace negotiations in the Persian Gulf appear to be deadlocked. Brent crude oil has popped above $100 and is approaching $110. On the other hand, WTI oil is moving towards the $105. When oil prices go up, so does inflation. That can boost long term yields and the dollar.

So the dollar is in a squeeze. Risk appetite and liquidity can push it down. It can be strengthened by higher yields and inflation concerns. A fall through 98 would mean liquidity is prevailing. A rebound from 98 would show that yields and inflation are back in control.

FTSE 100 Outlook: Energy Stocks versus Tariff Risk

FTSE 100 may react differently from broader U.K. economy. A weaker pound can support many FTSE 100 companies because they earn large share of revenue overseas. When sterling falls, foreign earnings translate into higher pound based revenue.

But tariff risk can still hurt sentiment. Companies with direct U.S. exposure may face pressure if tariffs raise costs or reduce demand. Export heavy sectors may also trade with more volatility.

Energy stocks may provide some support because oil prices are rising. Higher crude prices can lift oil majors and commodity-linked companies. That could help the FTSE 100 hold up better than domestic U.K. stocks. Still, the index may struggle if trade tensions damage global risk appetite.

From a technical perspective, the FTSE 100 remains strongly bullish in the short term, but the index reached strong resistance at 10,900 on 27 February 2026. The US-Iran war triggered a strong drop in the index to mark a low at 9,670 and initiated a strong rebound from the ascending broadening wedge support level.

Now, the index has been consolidating between 9,900 and 10,900 and is looking for the next direction.

The emergence of the ascending broadening wedge pattern during the last quarter of 2025 and the formation of a bullish base pattern in the third quarter of 2025 indicate strong bullish momentum. This shows a strong bullish structure for the FTSE 100. Any retracement back towards the 9,900 level may offer a strong buying opportunity. However, a break below 9,900 will open the door for a further drop in the near term.

Oil Shock Revives Inflation Risk as Persian Gulf Tensions Escalate

The Persian Gulf War is now a major market driver. Oil prices are moving up because talks for a negotiated peace seem stalled. If the war continues to impact shipping or supply expectations, oil prices could stay high.

Oil prices impact inflation expectations. There are links to transport costs, manufacturing, food prices and retail prices. That’s why oil shocks affect bonds and currencies. Investors begin to price the possibility that inflation will not come down. The first wave of inflation has already been observed in the latest consumer price index data.

That puts pressure on central banks. They may be anxious to support growth, but they also need to keep an eye on inflation. That explains why yields on long-term Treasury bonds are going up. And it is why gold (XAU) is weakening even with geopolitical uncertainty.

U.S. Stock Market Outlook: S&P 500 Breakout Needs Broader Confirmation

S&P 500 Breakout Above 7,000 Needs Dow and Transport Confirmation

The S&P 500 is at a new weekly high above 7,000. That is a key bullish signal. But it still has to be confirmed by the Dow Jones Industrial Average and the S&P 1500 Transportation Index.

This is because a narrow breakout may not be as reliable as a broad breakout. If the S&P 500 breaks out while the transports and industrials remain weak, the rally could be a function of a few large tech stocks.

The chart below shows that the S&P 500 has broken the key level of 7,000, as discussed previously. After the V-shaped recovery from the strong support at the 6,300 level, the index pushed above 7,000 which indicates a strong and sustainable move higher. This break above 7,000 has opened the door for a surge to 8,000.

Nasdaq 100 Benefits from Liquidity but Faces Headwinds from Tariffs

Liquidity and big tech support the Nasdaq 100. Since the December 2025 change, the Fed has expanded its balance sheet. This is not traditional QE (the Fed is purchasing short-term T-Bills) but the $170 billion injection of liquidity has helped markets post the repo crisis.

This is important for growth stocks. Tech stocks tend to do well when liquidity is improving and credit conditions are easing. It is one reason that risk assets are holding up despite war and tariffs. The chart below shows strong constructive development which indicates a surge to above 30,000.

Dow Jones and Transportation Index Must Confirm the S&P 500 Rally

The Dow Jones Industrial Average is significant as it shows industrial and blue chip sentiment. A break above 50,000 in the Dow Jones will strengthen S&P 500 bullish signal. It would indicate that investors are not just buying tech.

Dow Jones has hit the 50,000 level this week but failed to break higher in a similar fashion to the S&P 500, as seen in the chart below. The emergence of inverted head and shoulders patterns in 2022 and 2023, and then the formation of an ascending broadening wedge pattern, indicate strong bullish momentum in Dow Jones.

However, until the 50,000 level is breached, the rally in the S&P 500 is questionable in this environment. A break above the 50,000 level will open the door for a strong surge towards the 55,000 level.

The transportation index is even more vulnerable to trade and oil prices. An increase in oil prices increases the costs of transport companies. Duties can depress trade. This is why the index has been stuck around 1,300.

If the transports break above 1,300, it will send stronger confirmation signal. If transports keep dropping, it will mean that the S&P 500 breakout is not backed by the real economy. The chart below shows that the overall structure for the transportation index is constructive and will likely break higher.

Global Market Outlook: Tariffs and War Shape the Next Move

The current market environment is very sensitive. The $170 billion Fed infusion has eased the pressure on the risk markets, but it has not taken the pressure off the tariffs, oil-driven inflation and rising long-term rates. The S&P 500 is already at new highs. The Nasdaq 100 rally is led by tech. The FTSE 100 could be supported by oil and the weakness in the sterling.

But there is tariff and war risk. Trump’s comments about US tariffs add a new layer of uncertainty for U.K. exports. GBP/USD is at risk if sterling depreciation is offset by higher U.S. yields. EUR/GBP could gain if the dispute is seen as U.K. issue. The Dollar Index is approaching a key support level, but rising oil and U.S. bond yields could limit a fall in the dollar.

The best case for the S&P 500 is confirmed by the Dow Jones 30 and the Transportation Index. If Dow Jones 30 and transportation index break the 50,000 and 1,300, respectively, it will confirm a bullish momentum in the S&P 500. If they don’t, the S&P 500 breakout could be short-lived. The main risk is that oil continues to advance, expectations of inflation grow, and bond yields climb to 4.5%. This would be bad for gold, put pressure on equity valuations and would put pressure on the dollar again.

In conclusion, markets are not responding to just one narrative. They are coping with two major shocks. Tariffs threaten trade flows. War threatens energy prices. Liquidity is supporting risk assets, but it may not be enough to compensate for higher inflation, yields and trade risks.