Global equity markets have spent much of the past two years grinding higher, extending one of the more resilient rallies of the post-pandemic era even as the list of macro risks lengthens. Elevated valuations, concentrated leadership in a handful of mega-cap technology names, and an uncertain path for interest rates have left many market participants asking how much further the advance can run. Repeated bouts of geopolitical tension and shifting trade policy have tested the rally's resilience without derailing it outright. The tension between persistent gains and mounting caution has become a defining feature of markets navigating this later stage of the cycle.
A Rally Built on Narrow Leadership
Much of the advance in major indices over recent quarters has been concentrated in a small group of mega-cap technology and semiconductor companies tied to the buildout of artificial intelligence infrastructure. By the second half of 2024, these companies, often grouped under the "Magnificent Seven" label, accounted for close to a third of the S&P 500's total market capitalisation, roughly double their combined weight of two years earlier. Nvidia alone had briefly become one of the world's most valuable companies, its share price lifted by surging demand for the chips powering generative AI systems. That concentration has made headline index performance look stronger than the breadth of gains across the broader market would suggest.
Crosscurrents Behind the Caution
Even as indices hold near their highs, the macro backdrop remains unsettled. Central banks have had to balance the risk of easing too quickly against signs of a cooling labour market, while fiscal deficits, tariff policy and geopolitical flashpoints in the Middle East and elsewhere continue to inject episodic volatility into otherwise calm markets. Corporate earnings have generally held up, giving bulls a fundamental argument for continued gains, but valuation multiples in some sectors have stretched well above historical averages, leaving less room for disappointment.
How Markets Have Absorbed Shocks
What has distinguished this rally from earlier cycles is the speed with which markets have absorbed shocks, from tariff announcements to geopolitical flare-ups, often recovering losses within days rather than weeks. Early August 2024 offered a clear test, when a weak July jobs report and an abrupt unwind of the yen carry trade briefly sent the Nasdaq and Japan's Nikkei into their steepest declines in years, only for both indices to recover most of the ground within two weeks. That resilience partly reflects abundant liquidity and a persistent expectation that central banks will act as a backstop if conditions deteriorate sharply.
What It Means for Traders
For traders, a rally that keeps extending amid rising uncertainty calls for discipline rather than complacency. Position sizing that accounts for narrower breadth and stretched valuations, together with active use of stop-losses and hedges around scheduled macro events, becomes more important the longer gains persist without a meaningful correction. Watching leadership breadth, credit spreads and volatility indices can offer earlier warning signs than headline index levels alone, particularly when a rally has been carried disproportionately by a small number of stocks.
Daily market analysis by BCM Markets.