Investing.com -- Wall Street is recalibrating its long-term equity projections even as macroeconomic turbulence shakes the broader market. Citigroup equity strategist Scott Chronert lifted the bank's year-end 2026 target for the S&P 500 to 8100, up from his previous forecast of 7700.

This aggressive upward revision hinges on a massive acceleration in corporate profitability rather than expanding valuation multiples, according to Chronert. The strategist now projects index-level earnings to hit $350 in 2026 and has initiated a preliminary estimate of $400 for 2027.

Chronert noted that artificial intelligence infrastructure spending is driving an episodic fundamental surge across relevant technology and growth sectors. Consequently, he highlighted that the earnings weight of the market's growth cluster has ballooned to 45%, a massive leap from just 15% three decades ago.

Despite near-term optimism, Citi's model factors in a compression of trailing price-to-earnings multiples as the AI expansion matures. This shift, in Chronert's view, places the burden of future index gains on bottom-line execution rather than speculative momentum.

Rather than a typical economic cycle, Chronert views the current technology landscape as a unique capital expenditure supercycle. Based on corporate fundamentals and price action, the strategist suggested the market has likely entered the middle innings of this structural transition.

However, Citi's bullishness arrives at a fraught moment for equity markets grappling with immediate geopolitical and macroeconomic headwinds. The S&P 500 plummeted 2.64% on Friday to close at 7,383.74, erasing $1.8 trillion in market value during its worst single-day rout since October.

Analysts and economists are actively weighing long-term AI optimism against persistent inflationary pressures from Middle East conflicts and a surprisingly robust labor report. The strong employment data has reignited anxieties that the Federal Reserve might implement interest rate hikes to cool the economy.