The “Reopening” Signal from Hormuz Is Pulling Capital Away from Safe-Haven Assets

On April 17, 2026, the U.S. dollar fell to its lowest level in several weeks as global markets shifted sharply into risk-on mode after Iran announced that the Strait of Hormuz had reopened to commercial vessels during a temporary ceasefire period. Reuters reported that the Dollar Index fell 0.3% to 97.96, after earlier touching 97.632, its lowest level in seven weeks. Over the past two weeks, the index has declined by about 2.1%, marking its steepest two-week drop since late January.

This move reflects a very clear change in market sentiment: as geopolitical risk begins to ease, demand for the U.S. dollar as a safe-haven asset also declines. Reuters cited George Vessey of Convera, who noted that the weakness in the greenback was largely driven by the market unwinding its geopolitical risk premium, rather than by sufficient evidence to suggest the start of a long-term structural decline in the dollar.

Why Has Hormuz Had Such a Strong Impact on Global Markets?

Hormuz is not merely a symbolic waterway. It is one of the world’s most strategically important shipping routes for oil and liquefied natural gas. Reuters noted that the region handles around 20% of global oil and LNG flows, while hundreds of vessels and approximately 20,000 seafarers had been stranded in the Gulf awaiting signs that it was safe to move. Once Iran signaled that commercial vessels could pass through the strait again, markets almost immediately began repricing the outlook for global energy supply and regional tensions.

However, it would still be too early to say that Hormuz has returned to full normalcy. Reuters reported that ships passing through the strait still need to coordinate with Iran’s Islamic Revolutionary Guard Corps, and they are only permitted to use routes that Iran considers safe, while concerns over possible naval mines remain unresolved. BIMCO has even warned that describing the strait as “fully open” is not yet accurate, and the International Maritime Organization is still assessing the situation. This is the most important detail to bear in mind in order to avoid overstating the optimism surrounding the development.

The Dollar Falls, Oil Plunges, and U.S. Stocks Rally

As markets began to believe that the risk of a disruption to oil flows through Hormuz had diminished, the first major reaction came in energy prices. Reuters reported that Brent crude ended the session down 9% at $90.38 per barrel, while U.S. WTI crude fell 11.45% to $83.85 per barrel. Even so, these levels remain significantly higher than the roughly $70 per barrel seen before the conflict, suggesting that investors have not yet fully removed the geopolitical risk premium.

Wall Street immediately benefited from the drop in oil prices. According to Reuters, the Dow Jones rose 1.79% to 49,447.43, the S&P 500 gained 1.2% to 7,126.06, and the Nasdaq advanced 1.52% to 24,468.48. The Russell 2000 also closed at a record high. Sectors that consume large amounts of fuel, such as airlines, posted strong gains, while major energy stocks including Exxon Mobil and Chevron came under pressure as oil prices retreated.

Associated Press reported a similar trend: the S&P 500 climbed 1.2% to a fresh record, the Dow rose 868 points, and the Nasdaq gained 1.5% after Iran announced the reopening of Hormuz to commercial shipping. AP also noted that the market has risen more than 12% since its late-March low, largely on hopes that the United States and Iran may avoid the worst-case scenario for the global economy.

U.S. Treasuries Rise as Expectations for a Fed Rate Cut Return

As oil prices fell sharply, markets also began to consider the possibility that inflationary pressure could ease. Reuters reported that the yield on the U.S. 10-year Treasury fell to 4.246%, while the 2-year yield dropped to 3.7% during the April 17 session. This is a typical market response when investors believe that the energy shock may prove less severe than previously feared.

At the same time, interest rate futures raised the probability of a Federal Reserve rate cut in December to above 50%, up from 29.5% in the previous session. This shows that oil prices affect not only commodities and foreign exchange markets, but also feed quickly into expectations for U.S. monetary policy. In other words, Hormuz is not just a Middle East story. It is also a story about inflation, bonds, and the U.S. dollar.

What Does the Currency Market Tell Us?

It was not only the U.S. dollar that weakened. Other currencies more sensitive to global risk appetite also benefited. Reuters reported that the dollar fell 0.6% against the Japanese yen to 158.22, after previously rising to 159.86. Meanwhile, the euro gained 0.1% to $1.1789 after earlier touching $1.1848, its highest level in eight weeks. Sterling rose 0.1% to $1.3546, while the Australian dollar gained 0.2% to $0.7178, remaining close to a four-year high.

These moves suggest that markets are shifting from a defensive stance toward a greater willingness to take on risk. But this shift remains conditional. Even as investors welcomed the news, Reuters also reported that the United States continues to maintain a military blockade on vessels traveling to and from Iranian ports until a broader agreement is reached, while Tehran has warned that it could close the strait again if the blockade remains in place.

What the Market Is Betting On and What It May Be Overlooking

At this stage, markets are clearly betting on a scenario in which tensions ease long enough for oil prices to fall, inflation pressures to soften, and central banks to face less immediate policy pressure. That is why the dollar weakened, bonds rallied, and stocks surged at the same time. But the weakness in this narrative is that it depends heavily on the assumption that the reopening of Hormuz will prove smooth and sustainable.

In reality, operational conditions still suggest that traffic remains tightly controlled, maritime security risks have not been fully eliminated, and the underlying political agreement remains fragile. That means the optimism currently priced into markets could reverse quickly if conditions deteriorate again.

The signal from Hormuz triggered a significant shift in market sentiment on April 17, 2026: the U.S. dollar weakened, oil prices plunged, bonds rallied, and U.S. stocks set fresh records. But the essence of this market reaction is not that all risks have disappeared. Rather, it is that investors now believe the worst-case scenario may have been postponed, at least for the time being.

For investors, the next key issue to watch is not only the path of oil prices or the Dollar Index, but whether the reopening of Hormuz will prove durable, secure, and tied to a sufficiently credible geopolitical agreement. If not, the repricing we saw in the market today could be reversed very quickly.

Source: Reuters