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North American stock markets saw a downturn on Thursday, influenced by rising oil prices and a resurgence in treasury yields amidst the ongoing deadlock between the U.S. and Iran. Higher yields typically signal a slowdown in economic growth, impacting prices for stocks, cryptocurrencies, and various investment vehicles. This trend not only affects mortgage rates but may also hinder corporate borrowing necessary for the expansion of artificial intelligence data centres that have been pivotal to recent economic growth in the United States.
Treasury Yields Hit Significant Highs
The yield on the 30-year Treasury bond, often viewed as a key indicator of geopolitical and fiscal risk, rose by 1.7 basis points to reach 5.139 per cent. Earlier in the week, it had briefly peaked at 5.197 per cent—the highest level since July 2007, just prior to the global financial crisis. The overall impact of these rising yields was felt across major indices, with the S&P 500, Dow Jones Industrial Average, and Nasdaq each dropping approximately 0.5 per cent shortly after the market opened. In Canada, the Toronto Stock Exchange followed suit, declining by about 0.25 per cent.
Walmart’s Mixed Results Affect Investor Sentiment
In the retail sector, Walmart experienced a significant decline of over six per cent in its share price, despite reporting another quarter of strong sales. The retail giant’s forward guidance fell short of analysts’ expectations, raising concerns among investors. This hesitation is exacerbated by inflationary pressures that have made consumers more cautious about their spending habits, particularly since the onset of the Iran conflict in late February.

Meanwhile, Nvidia’s stock fluctuated between marginal gains and losses following its latest quarterly report, which exceeded Wall Street projections. The company reported an impressive 85 per cent increase in revenue, driven by soaring demand for its high-performance AI chips, while profits more than tripled.
Oil Prices Surge Amid Geopolitical Uncertainty
Oil prices climbed sharply on Thursday, rebounding from a five per cent drop the previous day. Brent crude, the international benchmark, rose nearly $4 to approach $109 per barrel, while U.S. benchmark WTI crude added $4 to reach $102 per barrel. These prices remain significantly elevated compared to the approximately $70 level seen before the Iran conflict. Market fluctuations in oil prices reflect the ongoing uncertainty surrounding potential agreements between the U.S. and Iran, which could restore oil deliveries from the Persian Gulf to global customers.
The Impact of Rising Treasury Yields
Treasury yields also resumed their upward trend after a brief respite, with the yield on the 10-year Treasury rising to 4.60 per cent from a low of 4.57 per cent the day prior. Earlier this week, yields had reached as high as 4.67 per cent. This increase follows a period of rising yields globally, driven by concerns that ongoing conflicts, such as the one in Iran, will keep oil prices high and contribute to inflationary pressures. Yields had dipped briefly after U.S. President Donald Trump announced that peace negotiations with Iran were progressing, but the optimism appears to have waned.

Why it Matters
The current market dynamics underscore the intricate relationship between geopolitical events and economic indicators. As oil prices rise and treasury yields climb, investors are faced with uncertainty that can dampen market enthusiasm. The pressure on consumer spending, particularly in sectors like retail, and the potential for increased borrowing costs for companies could pose significant challenges ahead. Understanding these trends is crucial for investors, policymakers, and consumers alike as they navigate the complexities of an ever-evolving global economy.