Wall Street rebounds at the open: US–Iran truce lifts indices

A strong recovery at the opening for US markets

Wall Street opens the trading session on March 23, 2026, with a marked recovery, interrupting a negative phase that had lasted for several weeks. The main US stock indices are posting significant gains from the very first minutes of trading, supported by a sudden improvement in the geopolitical environment and a resulting shift in investor sentiment. The rebound is notable not only for the size of the percentage gains, but also for the context from which it emerges: recent weeks had been characterized by widespread selling, driven by international tensions, inflation concerns, and uncertainty over the Federal Reserve’s next moves. Today’s opening therefore marks a potential short-term turning point, although the strength of the move remains to be confirmed.

The indices: strong gains led by the Nasdaq

The main Wall Street benchmarks show a strongly positive trend, with gains exceeding 1.5% and peaks above 2% for the technology sector.

1. Dow Jones Industrial Average: +1.6% / +2.0% (around +850 / +900 points)
2. S&P 500: +1.5% / +1.9%
3. NASDAQ Composite: +1.7% / +2.1%

In absolute terms, the indices are trading in the following approximate ranges:

1. S&P 500: between 6,600 and 6,700 points
2. Nasdaq: between 21,800 and 22,200 points
3. Dow Jones: between 46,000 and 47,000 points

The Nasdaq leads the gains, confirming the higher sensitivity of the technology sector to changes in interest rate expectations. The Dow Jones, more exposed to industrial and cyclical stocks, also benefits from the improved macroeconomic and geopolitical backdrop.

The geopolitical shift: truce between the United States and Iran

The main driver behind today’s rally is an unexpected easing of tensions between the United States and Iran. In recent hours, Washington has announced the suspension of certain military operations, accompanied by diplomatic signals described as “productive.” This development has had an immediate impact on global markets. Investors, who until a few days ago were pricing in a scenario of escalation in the Middle East with potential repercussions on energy supplies, have quickly revised downward the geopolitical risk premium. The result has been a classic “relief rally”: a broad positive reaction that occurs when a feared scenario does not materialize or is temporarily avoided. In this case, the truce has reduced concerns about an oil shock and a further acceleration in global inflation.

Oil drops sharply and sector impact

One of the most visible effects of the new geopolitical scenario is the sharp decline in oil prices, which are down by roughly 7–10%. This is a significant move, with immediate repercussions both at the macroeconomic and sector level.

The drop in crude oil leads to a redistribution of performance across different sectors:

1. energy stocks are penalized, affected by falling prices
2. sectors with high energy consumption are favored
3. support for consumer discretionary stocks
4. improved outlook for airlines and transportation companies
5. benefits for the financial sector, thanks to a more stable macro environment

From a macroeconomic perspective, lower oil prices help reduce inflationary pressures, a key factor at this stage of the economic cycle. This dynamic feeds directly into expectations for monetary policy.

Interest rates and inflation: expectations on the Fed shift

The decline in energy prices and easing geopolitical tensions have led market participants to revise their expectations regarding the Federal Reserve’s next moves. In particular, the market now appears less inclined to price in further rate hikes in the near term. This shift is crucial for equity market dynamics, especially for growth and technology stocks. Lower or stable rates increase the present value of future cash flows, favoring higher-growth companies. It is therefore no surprise that the Nasdaq is the main beneficiary of the session. The technology sector, which had suffered in recent weeks due to rising bond yields, now finds a more favorable environment. At the same time, the prospect of more contained inflation improves overall sentiment, reducing the risk of an overly restrictive monetary policy.

A technical rebound after difficult weeks

In addition to fundamental factors, today’s move also has a technical component. Wall Street had come off four consecutive weeks of declines, which had pushed many stocks into oversold territory.

In this context, news of the geopolitical truce acted as a catalyst, triggering:

1. short-covering
2. re-entry by institutional investors
3. opportunistic buying on beaten-down stocks

The result is an amplified rebound, combining both fundamental elements and market dynamics. However, the partly technical nature of the move suggests caution when assessing its sustainability.

Other economic news and market context

On the macroeconomic and corporate front, the day is relatively light in terms of major data releases, which further emphasizes the central role of geopolitics. However, some background developments complete the picture:

1. ongoing investment in the technology and semiconductor sectors, with particular focus on artificial intelligence
2. signs of resilience in the US economy despite recent tensions
3. isolated events, such as infrastructure disruptions, do not appear to have a significant market impact

Overall, market participants remain focused on three key variables:

1. developments in Middle East tensions
2. energy price trends
3. upcoming signals from the Federal Reserve

Outlook: temporary relief or trend reversal?

The strong opening on Wall Street is undoubtedly a positive signal, but it does not eliminate the uncertainties that continue to characterize the global environment. The truce between the United States and Iran, while significant, still appears fragile and potentially reversible. Markets therefore remain highly sensitive to news (“headline-driven”), with the risk of sharp movements in both directions. In this environment, volatility could remain elevated in the coming sessions. From a structural perspective, much will depend on the economy’s ability to maintain a balance between growth, inflation, and monetary policy. The decline in oil prices is a supportive factor, but not sufficient on its own to ensure lasting stabilization. In conclusion, the March 23 session represents a strong reaction to a sudden improvement in the geopolitical backdrop. It now remains to be seen whether this marks the beginning of a more constructive phase for markets or simply a technical rebound destined to fade in the short term.

Andrea Pelucchi