Goldman Sachs Sounds Alarm on Tech-Heavy Market Rally Driven by AI Stocks

Key Takeaways

• Tech stocks have contributed 85% of the S&P 500’s 10% year-to-date gains in 2025
• Nvidia comprises 9% of the index and generated 20% of its entire performance
• Goldman Sachs characterizes the current environment as a singular AI-driven momentum play
• First-quarter corporate earnings jumped 17%, while capital expenditures surged 38% annually
• The investment bank maintains its S&P 500 forecast of 7,600 by year-end, indicating minimal room for growth

Goldman Sachs is expressing caution about the concentration of gains in the S&P 500, despite the benchmark index posting a 10% advance in 2025.

According to a May 15 analysis from Goldman strategist Ben Snider, technology sector equities have been responsible for an overwhelming 85% of the year’s index performance. Without the tech sector’s contribution, the remaining S&P 500 components would have registered only a 3% increase.

The semiconductor manufacturer [[LINK_START_0]]Nvidia[[LINK_END_0]] has emerged as the primary catalyst behind market strength. The company currently accounts for 9% of the S&P 500’s total market capitalization and has delivered 20% of the benchmark’s overall returns during 2025.

Goldman’s assessment describes the market landscape as overwhelmingly focused on a single narrative: artificial intelligence. The firm’s momentum indicator has jumped 25% during the previous three-month period, representing one of the most dramatic upswings in recent history.

The issue extends beyond simple concentration concerns. Goldman referenced comparable situations from 1998, 1999, 2015, and 2021, periods when powerful momentum-driven rallies ultimately reversed course and led to broader market underperformance.

Strong Corporate Profits Support Current Valuations

Goldman emphasized that fundamental earnings strength underpins the current market advance, distinguishing it from pure speculation. First-quarter results showed S&P 500 companies delivering 17% annual earnings expansion when accounting adjustments are excluded.

Analyst projections for the next twelve months have climbed 13% year-to-date, even as valuation multiples compressed by 4% during the same timeframe.

The bulk of upward earnings revisions has been concentrated within AI infrastructure businesses and energy sector companies. For other S&P 500 constituents, earnings forecasts extending to 2027 have remained stagnant.

Goldman observed that earnings revision breadth showed improvement across all market sectors during the previous month. This development indicates the rally extends beyond just the largest technology corporations.

Capital investment represents a key driver behind rising earnings projections. S&P 500 firms boosted capital expenditures by 38% year-over-year during the first quarter, while share repurchase activity grew by merely 1%.

Goldman projects that capital spending will approach approximately $2 trillion in 2026, with AI-focused hyperscale companies potentially accounting for roughly $755 billion of that total.

Goldman Identifies Defensive Portfolio Options

Goldman identified consumer staples as the market segment with minimal exposure to AI momentum dynamics. Healthcare and real estate sectors also demonstrated low correlation with the AI trade.

The firm compiled a selection of companies showing positive earnings revisions while maintaining low sensitivity to AI-related trading volatility. This roster featured names including Eli Lilly, Reddit, Newmont, Archer-Daniels-Midland, and Casey’s General Stores.

Goldman also recommended that investors with significant momentum exposure consider incorporating lower-momentum equities as a protective measure. Historical patterns indicate that lagging stocks typically outperform during abrupt momentum reversals.

The ten largest S&P 500 companies now represent 41% of the index’s aggregate market value and generate 34% of total earnings. Meanwhile, the typical S&P 500 constituent trades 13% beneath its individual 52-week peak.

Goldman preserved its 7,600 year-end 2026 price target for the S&P 500, suggesting constrained appreciation potential from present levels.

The post Goldman Sachs Sounds Alarm on Tech-Heavy Market Rally Driven by AI Stocks appeared first on Blockonomi.