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Goldman Sachs reaffirms US equity overweight on 31% consensus EPS growth, though flags geopolitics, AI-capex uncertainty, and higher rates as top risks.
- Goldman Sachs raised its S&P 500 year-end target to 8,000, backed by a 2026 EPS forecast of $340, representing 24% annual profit growth.
- The Fed raised its benchmark to 3.75%-4% on September 16, its first hike since 2023, with the effective federal funds rate now at 3.88%.
- Goldman flags geopolitics, AI-capex uncertainty, and prolonged higher rates as three key risks capable of derailing the bull case.
Lead
Goldman Sachs (GS) reaffirmed its overweight recommendation on US equities this week, maintaining an S&P 500 year-end target of 8,000 as equity markets today absorbed the Federal Reserve's September 16 rate increase to 3.75%-4% - the first hike since 2023 - without abandoning the earnings-driven bull case. The firm cited Wall Street's consensus forecast of 31% earnings-per-share growth for 2026 and exceptional corporate fundamentals as the central supports for the call, while identifying geopolitics, AI-capex uncertainty, and prolonged higher rates as the three risks capable of reversing course.Why Did Goldman Maintain Its Overweight Call?
The answer sits in the earnings data. Goldman Sachs raised its own 2026 S&P 500 EPS forecast to $340 - representing 24% annual growth - and upgraded its year-end index target to 8,000 from 7,600 on the strength of corporate profit momentum that has absorbed rising financing costs without meaningful deterioration. Street-wide consensus now projects 31% full-year EPS growth for the S&P 500, a historically elevated rate that has occurred only 10 times since 1936, with Goldman estimating that AI-infrastructure spending accounts for roughly half of that growth. The combination of technology-driven margin expansion and resilient demand gives the firm confidence that US stocks can continue making new highs despite tighter monetary policy.
Corporate Fundamentals Anchoring the Bull Case
US corporations entering the final stretch of 2026 carry unusually clean balance sheets by historical standards. Profit margins have widened rather than compressed even as the federal funds rate climbed through this cycle, and forward guidance across technology and industrial sectors has held firm. Goldman notes that 31% EPS growth for US equities compares with 17% in Europe, 18% in Japan, and more than 70% in emerging markets, underscoring a structural earnings advantage for domestic stocks. The index valuation multiple is expected to hold at approximately 21 times forward earnings as modest yield declines are offset by slowing growth and investor skepticism about the durability of AI-related profits.
What Could Derail the Rally?
Goldman Sachs identifies three threats capable of breaking the bull case. First, geopolitics: rising tensions across multiple theaters have injected volatility into commodity markets and supply chains, and a sustained escalation would force a repricing of risk across asset classes. Second, AI-capex uncertainty: AI infrastructure investment is the primary engine of 2026 earnings growth, but hyperscaler capital expenditure commitments could disappoint or face regulatory headwinds, removing the catalyst underpinning roughly half of the S&P 500's profit expansion. Third, prolonged higher rates: the Federal Reserve's resumed hiking cycle has placed the effective rate at 3.88%, with futures markets pricing approximately 4.2% by December 2026 and near 4.7% by September 2027 - a trajectory that compresses equity multiples, increases corporate debt-service costs, and shifts institutional capital toward fixed income.Rate Shock Ripples Through Equity Markets Today
The September 16 decision immediately pressured equity markets today. The CBOE Volatility Index drifted above 16 following the hike, reflecting investor unease with a monetary policy reversal not widely anticipated heading into the quarter. The SPY SPDR S&P 500 ETF Trust and the QQQ Nasdaq 100 ETF absorbed selling pressure as rate-sensitive growth stocks faced the sharpest multiple compression. Seasonal tendencies compounded the effect: September is historically the weakest month for US equities, and midterm-year patterns amplify selling pressure. Goldman points to historical precedent showing that rate-hike cycles coinciding with strong earnings growth tend to produce equity gains over a 12-month horizon, even when the near-term path is volatile.
AI Capex and the Earnings Engine
AI infrastructure spending has become the single largest determinant of S&P 500 earnings momentum in 2026, accounting for approximately half of annual profit growth. Microsoft (MSFT), Alphabet (GOOG), and Amazon (AMZN) have maintained elevated capital expenditure guidance through the year, while chipmakers led by Nvidia (NVDA) continue to report order pipelines suggesting the buildout remains intact. The risk Goldman Sachs identifies is not that AI spending has peaked but that investors have priced in an acceleration that may not materialize at the expected pace - leaving valuations exposed if quarterly capex reports disappoint against elevated expectations.
