Global markets stumble in July as renewed US-Iran hostilities collide with AI valuation reset and Fed hawkishness
The brief “peace dividend” seen in June evaporated rapidly in July as the United States (US)-Iran ceasefire unravelled amid renewed military exchanges, driving oil prices sharply higher and reigniting geopolitical concerns. At the same time, the Federal Reserve's (Fed) hawkish interest rate stance unsettled bond markets, while a deepening artificial intelligence (AI)-driven valuation reset triggered significant losses across global semiconductor and technology stocks. Together, these developments weighed heavily on investor sentiment and erased much of the gains accumulated earlier in the year.
Market overview (as at 29 July 2026)
July delivered a second consecutive month of broad losses, with the MSCI World Index falling ~1.6% for the month, while the MSCI Emerging Markets Index experienced a far sharper drawdown of ~9.2% as a Korea-centred technology rout rippled across Asia and beyond. Three interlocking themes dominated the month: the complete collapse of the June memorandum of understanding (MOU) and resumption of active US-Iran hostilities; a deepening selloff in AI-linked semiconductor and mega-cap technology stocks driven by valuation concerns, circular financing fears, and China competitive risks; and a bond market revolt following the Fed's July “hawkish hold”, which was accompanied by three dissents in favour of a rate hike, sending the 30-year Treasury yield to its highest level since 2007.
Regional performance
Global equities experienced a clear risk-off rotation with July being a pivotal month for the technology sector as investors increasingly differentiated between companies demonstrating tangible AI-driven revenue growth and those committing to ever-higher levels of capital expenditure. In the US, the S&P 500 fell ~2.4% amid sharp losses across most of the” Magnificent Seven” (-3%) as the Nasdaq 100 entered correction territory after falling more than 10%. Moving over to Europe, the Euro Stoxx 50 was slightly more resilient, declining by around 1.1% as the European Central Bank’s (ECB’s) “hold” and the region's domestic demand-driven recovery offered partial insulation from the AI trade unwind. Asian markets experienced a difficult month overall, with the MSCI Asia Pacific Index down ~6.7%, though with significant divergence across key markets. South Korea's KOSPI plunged 33%, making it the region's worst performer and reversing months of record highs, as investors questioned the sustainability of AI-related demand. Japan's Nikkei 225 fell 12.2%, with global risk-off sentiment outweighing support from a weaker yen. In contrast, Hong Kong's Hang Seng rose 13.1%, recovering much of the previous month's losses as Chinese technology and e-commerce stocks rebounded. Locally, the JSE All Share ended the month relatively flat in South African rand terms, though rand weakness translated this into a loss of ~2% in US dollar terms, with the South African Reserve Bank’s (SARB) surprise rate hold and accelerating consumer inflation (CPI) keeping sentiment cautious.
