Markets walk a tightrope as AI optimism clashes with Iran oil tensions

Global financial markets are navigating a precarious period as investors weigh the potential for an artificial intelligence-driven economic boom against the risk of oil price shocks stemming from the conflict between the United States and Iran. Global equities reached an all-time high on 3 June 2026 before suffering their worst single-day decline since October 2025. Market movements are closely tied to US President Donald Trump's rhetoric regarding Iran and uncertainty surrounding the reopening of the Strait of Hormuz. While AI optimism has supported growth and asset prices, fears of prolonged oil prices above US$95 per barrel have raised concerns of stagflation. Investors are increasingly hedging against inflation and geopolitical risks, with asset managers noting correlated movements across equities, bonds, and currencies.

The economic outlook is now described as being on a knife edge, with equal odds of an AI boom lifting growth or oil shocks from the US-Iran war pushing stocks and bonds into a tailspin. Florian Ielpo, head of macro and multi-asset portfolio management at Lombard Odier Investment Managers, noted that most investors have been operating under the assumption that the Strait of Hormuz would reopen within less than three months. He warned that a shift in this view, leading to oil prices remaining at US$95 or more for an extended period, would fundamentally alter the market perspective towards a stagflation outlook.

AI-driven optimism has buoyed Wall Street stocks and boosted official growth forecasts, driving expansion for Asian exporters and lifting sentiment towards assets ranging from global bank shares to Greek debt. Taiwan expects the best economic growth in 16 years for 2026 due to semiconductor exports, while global tech spending has surged imports and exports in China. This correlation has altered traditional market dynamics, with Britain’s FTSE 100 index, typically inversely related to growth stocks, beginning to rise alongside them due to its heavy weighting in energy producers and miners.

However, these tech-driven correlations mean it is becoming harder for investors to find safe havens if fears about inflation and rate hikes denting AI spending begin to drive world markets. Following markets pricing in a 70 per cent chance of a US rate hike, South Korea’s won hit 17-year lows and its tech-heavy Kospi index fell almost 9 per cent within hours. Alessia Berardi, global head of macro-economics and emerging markets at Amundi, cautioned that while she still favoured equities, a repricing of interest rate policy alongside higher oil prices would create stagflationary risks, with some countries already facing recessionary outlooks.

Professional asset managers are adjusting their portfolios to account for these risks, with many buying insurance products rather than increasing equity holdings. Ben Jones, global head of research at Invesco, suggested that positioning for stagflation is necessary if the Strait remains closed for a long period, though he noted that historical precedent suggests geopolitical risks tend to pass, leading to rapid market rallies. Meanwhile, Michael Nizard of Edmond de Rothschild Asset Management is topping up on derivatives that profit from volatility, and Kevin Thozet of Carmignac is increasing holdings in US inflation-linked debt due to complacent market forecasts for consumer prices.

Bond markets are also reflecting the heightened uncertainty, with German Bund yields close to 15-year highs and 10-year Japanese yields touching three-decade highs. A measure of bond market volatility is around 5 per cent above its level prior to the start of the war, while stock market volatility is 35 per cent higher year-to-date. As interest rate, inflation, and tech investment bets become more correlated, the market is walking a narrow line between sustained growth and a potential economic downturn driven by energy supply scares.