S&P 500 Will Target Gains in Fourth Quarter 2026

Historical patterns suggest the index may continue its upward trend into the final quarter of the year.

Updated on Sept. 28, 2026 in Investing

Isometric editorial illustration of a bronze bull and a steel gear on a plinth, representing US financial market trends. — Market strategists expect the S&P 500 to sustain its upward momentum through the end of 2026, driven largely by performance in the technology sector. AI Illustration. Upload story photo >

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The S&P 500 enters the fourth quarter of 2026 with a year-to-date gain of 12.90% as of September 25. Historical data shows that when the index reaches this range of gains, it often finishes the year with positive returns.

Why it matters

Market strategists anticipate a strong finish to the year, bolstered by high expectations for the technology sector. Technology and communication services currently represent a significant portion of the index at 39% and 11% respectively.

The S&P 500 index has posted positive fourth-quarter returns in 18 out of 21 historical setups since 1950, representing an 85.7% success rate under similar year-to-date conditions. Technology stocks, which comprise 39% of the index, are expected to see 40% revenue growth in the third quarter.

The players

S&P 500

The S&P 500 is a stock market index that tracks the performance of 500 of the largest companies listed on stock exchanges in the United States.

Nasdaq Composite

The Nasdaq Composite is a stock market index that includes almost all stocks listed on the Nasdaq stock exchange.

Dow Jones Industrial Average

The Dow Jones Industrial Average is a stock market index that tracks 30 prominent companies listed on stock exchanges in the United States.

The details

Market history indicates that the technology sector frequently leads bull markets, a trend that may support broader index gains in Q4 2026. While the S&P 500 has finished higher in 12 of the last 13 years, the index did experience a 14.0% decline in the fourth quarter of 2018.

1950 marked the beginning of the period used for the S&P 500 historical performance analysis.
2018 was a year where the index saw a 14.0% decrease during the fourth quarter.
September 25, 2026, was the date the S&P 500 reached a 12.90% year-to-date gain.
Q4 2026 is the current projected period for potential market gains.

Market Dynamics

The current forecast follows a pattern set by the 2018 fourth-quarter S&P 500 decline, which represents a historical exception to typical end-of-year growth cycles. These trends illustrate the cyclical nature of market performance and the inherent risks that persist even during periods of sustained year-to-date growth.

Retail investors should consider these historical trends as part of their broader portfolio allocation strategy rather than a guarantee of future quarterly performance. Maintaining a diversified position remains essential to mitigating the potential for late-year market volatility.

The takeaway

While historical data suggests a strong likelihood of positive year-end performance, individual investors should maintain a focus on long-term goals rather than short-term quarterly fluctuations. Diversifying across sectors helps reduce the impact of any single sector, such as technology, failing to meet high growth expectations.