Last week was dominated by the same two forces that have been steering markets for much of 2026: Middle East-driven inflation risk and the resilience of the AI-led equity rally. Global stocks mostly held up, but the mood turned more cautious as oil prices, bond yields, and geopolitical headlines reminded investors that the macro backdrop remains fragile.
The biggest global story was the continued strain in the Middle East, where conflict and drone attacks kept crude oil markets on edge and fed fears of a broader inflation shock. Reports of fresh attacks in the Persian Gulf pushed up oil prices and Treasury yields, while central bankers warned that the inflationary impact of the Iran war may not be temporary. Higher energy prices can quickly spill into transport and manufacturing, impacting consumer inflation expectations across the world.
The second major theme was the uneasy mix of strong growth signals and policy uncertainty in the US and elsewhere. US economic data remained reasonably solid, with employment holding up and market participants focusing on forthcoming inflation numbers and central bank signals. At the sametime, traders were watching trade and political developments, including heightened attention on US-China relations ahead of a Trump-Xi meeting and tariff-related pressures.
There were also significant cross currents in Europe and Asia. European shares fell early in the week as Middle East tensions and surging crude prices weighed on sentiment, while automakers suffered after tariff threats added to already weak confidence. In Asia, markets were more mixed, with investors balancing the drag from higher oil and bond yields against optimism around technology, exports, and broader risk appetite.
Wall Street’s reaction was a classic late-cycle tug of war. US stocks had been near record highs on the back of strong corporate earnings and enthusiasm for artificial intelligence, but they pulled back as oil prices and inflation fears rose. The S&P 500 retreated from its AI-fuelled record levels as surging crude reignited global inflation worries.
Earlier in the week, however, markets were still willing to look past those risks. The S&P 500 and Nasdaq both hit new record highs after strong corporate earnings announcements. That suggests investors still believe earnings growth and AI spending can offset some of the macro headwinds, at least for now.
In the US Treasury market, rising yields became almost as important as the geopolitical shock itself. In other words, equity investors were reacting not just to the headlines, but also to the higher discount-rate environment that those headlines helped create.
As events unfold, Europe looks more vulnerable than the US because it is more exposed to imported energy costs and weaker growth momentum. Earlier in the week, European bourses weakened as the Middle East situation deteriorated and oil prices jumped. The automotive sector was hit particularly hard after renewed tariff threats, while European stocks remained more than 4% below pre-war levels.
Asia saw a more varied response. Markets slipped as Gulf drone attacks lifted oil prices and bond yields, though the region’s technology exposure kept some investors constructive. Another market update showed Asian equities easing from record highs while Europe stayed weaker and the FTSE 100 lagged, underscoring the uneven nature of global performance. The message was clear: markets with greater energy sensitivity or weaker domestic demand felt the strain first.
Bond markets amplified the equity story. Media channels reported that US 30-year Treasury yields reached levels last seen before the 2008 financial crisis, a sign that investors were demanding more compensation for inflation and fiscal risk. Rising yields were especially important because they challenged the high valuations of growth stocks and AI leaders, even when those companies continued to post strong results.
Currencies also reflected the pressure. Once again, it was reported that the Indian rupee fell to an all-time low as elevated energy prices and higher global yields hurt risk appetite and worsened external financing concerns. That kind of move matters beyond India: it shows how an oil shock can spread through the emerging markets via trade balances, capital flows, and inflation expectations.
Commodity markets were nuanced. Energy prices rose, while precious metals were mixed, with gold and silver marginally higher; copper was notably firmer as investors priced in a more inflationary backdrop. Continued confrontation in the Gulf kept oil prices and bond yields elevated, contributing to a more nervous and defensive tone in global equity markets. If this continues, higher energy prices and rising yields will put renewed pressure on risk assets.
The main lesson from last week is that markets are still willing to reward strong corporate earnings, but they are becoming more sensitive to inflation shocks. AI remains a powerful support for global equities, but it is no longer enough on its own to keep risk assets rising if oil prices, yields, and central bank concerns continue to move in the wrong direction.
A second lesson is that regional winners and losers are diverging. The US still has the strongest corporate earnings narrative, Europe is more exposed to energy prices and trade stress, and Asia is caught between export resilience and imported inflation. For portfolio positioning, that means recent market moves are less about one simple global trend and more about a widening split between regions and sectors that benefit from stronger growth and those hurt by higher input costs.
Overall, it’s a reminder that the market story for 2026 is not just about AI-driven optimism. It is also about whether the world can absorb geopolitical shocks without triggering a broader inflation response, and whether bond yields stay high enough to cap the global equity rally. The prevailing view remains that risk assets can keep grinding higher in 2026, but elevated valuations and policy uncertainty make the backdrop more fragile than the current bullish headlines suggest.
The Lowdown to 18 May 2026
