The latest US earnings season propelled the S&P 500 to fresh highs last week, delivering the strongest first-half earnings growth since the post-COVID rebound of 2021. Moving forward, consensus expects the 1H26 earnings boom to moderate but remain solidly positive, +10.5% in 1H27 and +15.0% in 1H28 (see orange below), suggesting the market anticipates a sustained, if more normalised, earnings expansion cycle rather than a one-off spike. If we look at the numbers in an even more granular fashion, it’s not surprising US indices are posting fresh highs.