US Earnings Season: What the 29% Profit Growth Forecast Really Tells Investors (Part 1)

As third-quarter results emerge, investors must determine whether companies are generating enough growth to justify current globally high valuations, particularly as earnings surprises remain relatively modest and expectations for the coming quarters stay elevated.

According to FactSet’s October 16, 2026, earnings update, S&P 500 companies are expected to record year-over-year earnings growth of 29.0% in the third quarter. Revenue is projected to increase by 12.6%, while the index’s forward 12-month price-to-earnings ratio stands at 19.0.

These figures paint a positive picture of corporate profitability. However, the difference between reported growth and performance relative to market expectations raises an important question: is the strength of US earnings sufficient to sustain investor confidence, or does the market face a growing risk of disappointment?

S&P 500 Earnings Growth Remains Strong, but the Drivers Matter

The projected 29.0% increase in S&P 500 earnings represents a large expansion in corporate profitability. If achieved, it would confirm that US companies continue to generate significant year-over-year profit growth despite a challenging economic and financial environment. However, the aggregate figure should not be interpreted as evidence that all companies are experiencing equally strong conditions.

Sector differences remain important. FactSet’s October 16 update indicates that ten of the eleven S&P 500 sectors are expected to report earnings growth, with Health Care the exception. Five sectors are projected to deliver double-digit increases, highlighting the breadth of positive expectations while also showing that profitability is not improving uniformly across the market.

For investors, the distinction between broad-based growth and sector concentration matters. When a limited number of industries account for a disproportionate share of earnings expansion, the headline index figure can conceal weaker performance elsewhere.

The composition of earnings growth also influences its sustainability. Companies benefiting from strong demand, pricing power or improving operational efficiency may be better positioned to maintain profitability than those relying on temporary factors or unusually favourable comparisons with the previous year.

Consequently, investors should look beyond the aggregate growth rate and examine which industries are contributing most to the expansion, whether their performance is supported by underlying demand, and how management teams assess the outlook for the next several quarters.

Why Beating Earnings Estimates May Not Be Enough

The first weeks of earnings season offer another perspective on corporate performance: how actual results compare with analysts’ expectations. As of October 16, 84% of the S&P 500 companies that had reported earnings had exceeded consensus earnings-per-share estimates. On the surface, this suggests that corporate results are generally holding up well, but FactSet reported that aggregate earnings were 2.6% above estimates, significantly below the five-year average of 7.5% and the ten-year average of 8.0%.

This distinction is important, as a company can increase its profits substantially compared with the previous year while still delivering a relatively small positive surprise if analysts had already anticipated strong growth.

For example, a business reporting a 20% increase in earnings may appear fundamentally strong. Yet if analysts had forecast growth of 25%, the result would fall short of expectations and could trigger downward revisions to future estimates and drag its share price lower. The opposite is also possible. A company delivering modest profit growth could attract a positive market reaction if its results exceed cautious forecasts and management provides a stronger outlook.

This helps explain why the proportion of companies beating estimates does not necessarily indicate how much additional upside earnings season can provide for share prices. There is also an important limitation to the October 16 figures: only 9% of S&P 500 companies had reported at that point. The results therefore represent an early snapshot rather than a definitive assessment of the quarter. As more companies publish their results, both the percentage of earnings beats and the size of the aggregate surprise could change materially.

Revenue Growth and Profitability: What Investors Should Watch

Revenue growth provides a useful complement to earnings figures because it helps distinguish expanding business activity from improvements in profitability.

FactSet’s blended estimate for S&P 500 revenue growth stood at 12.6% on October 16, up from 12.2% at the end of September. Meanwhile, the blended earnings growth estimate had edged down from 29.2% to 29.0% over the same period. These figures should be interpreted cautiously because blended estimates combine reported results with analysts’ forecasts for companies that have yet to publish their accounts. Nevertheless, they illustrate why investors should monitor both revenue and earnings rather than focusing on either measure in isolation.

When profits grow substantially faster than sales, companies may be benefiting from operating leverage, cost reductions, favourable product mixes or improved pricing power. These factors can support earnings growth without requiring revenue to accelerate at the same pace. However, such gains may become harder to sustain if operating costs increase or companies lose the ability to raise prices. A business that has already captured substantial efficiency improvements may also have fewer opportunities to generate comparable gains in subsequent quarters.

The comparison between revenue and earnings surprises is equally revealing. FactSet reported that aggregate revenue among companies reporting results was 1.1% above analysts’ estimates, below the five-year average of 2.0% and the ten-year average of 1.4%.

This does not establish that demand is weakening across the US economy. The sample remains small, and individual industries can experience very different conditions. However, it suggests that positive revenue surprises have so far been less pronounced than historical benchmarks would imply. Investors should therefore assess whether earnings growth is being supported by sustainable sales expansion and operational improvements, rather than assuming that strong profits automatically signal accelerating demand.

Sources: FactSet, Investopedia