Citi has raised its S&P 500 annual earnings forecast to $365 from $350 following second-quarter results and reaffirmed its year-end index target of 8,100. The bank notes that current fundamental factors continue to support the market, though significant grounds for caution remain.

Strategists led by Scott Chronert note that "fundamental tailwinds" for the index "largely remain intact." Market broadening has already begun and, in their view, should continue as investors price in the likelihood of the Fed refraining from further rate hikes.

Particularly noteworthy in this picture are companies actively investing in AI infrastructure. Their performance should support the AI-related segment of the index, at least for now.

According to Citi analysts, the path to 8,100 depends on a combination of several factors:– market broadening,– expectations of a soft landing,– a reset in the technology sector,– restored confidence in AI fundamentals.

At the same time, strategists caution: although second-quarter earnings surprises slightly exceeded Citi's expectations, much of the increase in consensus earnings was driven by the revaluation of large-cap assets and cannot be directly attributed to operating results.

In a broader context, experts noted an acceleration in sales growth at the index level and further margin expansion. The earnings growth pattern by style more closely resembles a post-recession recovery, though the Citi team again emphasizes the importance of accounting for non-operating components when assessing results. Nevertheless, the overall fundamental backdrop, they say, is "strong."

Citi also highlighted the extremely concentrated nature of the earnings improvement. The index earnings consensus has risen from $312 at the start of the year to $361 currently, marking a $49 increase, of which $45 came from just 20 stocks. The annual consensus has risen by $20 since the end of the second quarter, yet only $3 of this increase is tied to revisions of third- and fourth-quarter forecasts.

As a result, analysts draw a cautious conclusion: tailwinds for earnings remain undeniable, but with caveats related to asset revaluation and the lack of continued growth in forecasts for the remaining quarters of the year compared with the strong second-quarter results.

Arguments in favor of further market broadening remain valid under a soft landing scenario and a "goldilocks" macroeconomic backdrop, they add.

Separately, Citi emphasizes that the AI-related stock group remains "key to the index's further growth." As the strategists summarize, the question here is confidence in the duration and sustainability of the current fundamental strength.