August 2026 Market Outlook: What a Fool Believes

August 2026 was another month in which investors appeared willing to suspend disbelief. Equity markets continued to push higher, supported by exceptional corporate earnings, resilient economic activity and relentless enthusiasm around artificial intelligence. Profit margins remain close to record highs, and consensus expectations still point to another year of robust earnings growth.

Yet beneath the surface, an important warning signal is flashing. Government bond yields have continued to rise, reflecting a world in which fiscal deficits remain elevated, debt issuance is accelerating and investors are demanding higher compensation for long-term lending. Historically, rising risk-free rates have eventually imposed a valuation discipline that equity markets cannot ignore indefinitely.

The current profit cycle has been remarkable, but history teaches that no cycle lasts forever. Competition increases, margins normalize and economic gravity ultimately reasserts itself. Today’s market narrative assumes that productivity gains, technological innovation and strong corporate pricing power will continue to offset higher financing costs. That may prove true for some time. However, believing that earnings can compound indefinitely while the cost of capital rises steadily requires an increasing degree of faith; As Michael McDonald magnificently reminds us in What a Fool Believes, “No wise man has the power to reason away” realities that eventually assert themselves.

“What a Fool Believes” comes to mind, indeed. The song tells the story of someone convinced that a past reality still exists, despite evidence to the contrary. Investors should be careful not to fall into a similar trap. Exceptional profit growth can persist longer than expected, but the combination of stretched valuations and rising government bond yields has rarely been a recipe for permanent market euphoria.

For now, the music is still playing. But prudent investors know that the most dangerous assumption in financial markets is that today’s extraordinary conditions will last forever.

The MSCI World rose 2.5% for the month, with all regions up, notably Emerging Markets and Japan (+3.2% and +3.8% respectively); Growth and Value performed evenly, but the second half of the month saw market concentration increase significantly.

If US 10 year yields barely moved for August, European Government bonds yields were on the rise, notably for France, whose spread versus Germany teeters with levels not seen since the 2012 eurozone crisis, but does not reach panic levels, for now. Gold rebounded sharply (+9.6%) as well as Bitcoin (+25.4% in August, but still down 10% year to date). Oil added 1.3% for the WTI, adding to the strong return provided year to date by most commodities; to wit, the CRB Index was up 6.6% in August and is now up 37.4% year to date.