Wall Street suddenly down. Trump’s words on Iran and tomorrow’s inflation data cut sentiment

Tuesday's session on the New York stock exchange started calmly, but investor sentiment clearly worsened during the day. Technology and artificial intelligence companies suffered the most.

Glos polonii w usa
Głos Polonii w USA
June 9, 2026
Wall street
Charging Bull na Wall Street w Nowym Jorku. We wtorek 9 czerwca 2026 nowojorska giełda wyraźnie spadła – najmocniej traciły spółki technologiczne (zdjęcie archiwalne). Fot. Chansak Joe / Shutterstock (Editorial Use)

The immediate impetus for the sell-off – as reported by financial news service TheStreet – was President Donald Trump’s statement that the United States “must respond” to recent Iraqi retaliation in the four-month-long war. Added to this were fears ahead of Wednesday’s inflation report. The Nasdaq index, comprising technology companies, lost over 3 percent during the session. For Polish-American readers, many of whom have retirement savings in the US invested in stock market-linked funds, this is a day worth understanding calmly and without panic.

Iran back in market spotlight

The most important immediate reason for Tuesday’s sell-off was geopolitics. The war between the United States and Israel with Iran has been ongoing for four months, and Trump’s announcement of the need to respond to the Iranian attack heightened fears of further escalation. The conflict also has a purely economic dimension: disruptions to shipping through the Strait of Hormuz, through which a significant portion of the world’s oil flows, have been driving up energy prices for months. Rising fuel costs translate into higher expenses across the economy, which in turn strengthens inflationary pressure – one of the market’s main fears.

Market awaits Wednesday’s inflation data

The second factor is the publication of the latest US inflation reading, scheduled for Wednesday. According to a Reuters survey of economists, the Consumer Price Index (CPI) may have risen by 4.2 percent year-on-year in May – which would be the highest reading since April 2023. For comparison, inflation was 3.8 percent in April. This data is crucial because Federal Reserve (the US central bank) decisions depend on it. If inflation proves stubbornly high, the Fed may keep interest rates high for longer – and the stock market usually dislikes high rates because they increase the cost of money and reduce the attractiveness of stocks. Therefore, some large investors prefer not to take risks and sell shares before the data is released.

Why technology is falling the most

Technology companies, especially those related to artificial intelligence, felt the greatest pressure – and this is no coincidence. Over the past few months, the shares of many companies in this sector have grown very rapidly, and their valuations have reached levels that some investors consider high. This is the second such session in a few days: in early June, a sell-off in the semiconductor sector wiped out about a trillion dollars from the market, according to press reports. When uncertainty arises, investors most often sell precisely those stocks that had previously risen the most. This does not automatically mean that companies are in trouble – it is often simply profit-taking after a long period of growth.

Interest rates still a concern

An additional reason for caution is expectations regarding future Fed decisions. Just a few months ago, many investors were counting on rapid interest rate cuts. Today, the market is no longer so sure. The American economy remains relatively strong, and the labor market still looks good – this is good news in itself, but also a signal that the Fed does not need to rush to cut interest rates. Moreover, as reported by Reuters, the small business sentiment index (NFIB) fell in May, and the percentage of owners planning price increases rose to its highest level in almost four years – suggesting that inflation may persist longer.

Is this the start of a bigger downturn

For now, nothing unequivocally indicates this. Tuesday’s movements look more like a reaction to a specific event – Trump’s words about Iran – and cautious preparation for Wednesday’s data, rather than panic. It is worth remembering that after strong growth, even a healthy market sometimes needs a break. Wednesday’s inflation report, however, could set the direction for the coming weeks: if the data turns out better than forecasts, the stock market could quickly regain optimism; if it turns out worse, investors should prepare for greater volatility. Much will also depend on the further development of the situation in the Middle East, which remains the most unpredictable variable today.

Key facts

  • What: Tuesday’s sell-off on Wall Street. Nasdaq lost over 3% during the session. Technology and AI companies fell the most.
  • Why: Trump’s words about the need to respond to the Iranian attack (according to TheStreet) and fears ahead of Wednesday’s inflation report (CPI forecast +4.2% y/y according to Reuters survey).
  • Sources: TheStreet, Reuters, Yahoo Finance.

The article is for informational purposes only and does not constitute investment advice. Investing involves the risk of losing part or all of your capital. Editorial staff: Głos Polonii w USA. More at poland.us. Polish-American business directory and experts: PolishPages.com.

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