S&P 500 Nears Fourth Straight Double-Digit Year With 10 Weeks Left

The S&P 500 (^GSPC) is positioned to record its fourth consecutive year of double-digit gains, a streak last achieved in 1998. The index currently stands around 7,714, representing an increase of nearly 13% from its 2025 closing value of 6,845.50. This trajectory follows strong performances in the preceding three years, with price-only returns of approximately 24% in 2023, 23% in 2024, and 16% in 2025.

For the streak to continue, the index must finish the year above approximately 7,530. This requirement leaves a buffer of about 2.4% with roughly 10 weeks remaining in the calendar. The index has already logged 28 record closes this year, with the most recent high reaching 7,818.93 on Oct. 6.

Historical data indicates that such streaks are rare. Since 1929, the S&P 500 has achieved four straight double-digit years only three times, with the fourth gain occurring in 1945, 1952, and 1998. The first two instances relied on data from the smaller index that preceded the current 500-stock format, which officially began on March 4, 1957. The most recent comparable run occurred between 1995 and 1999, during which the index posted gains of roughly 34%, 20%, 31%, 27%, and 20% over five years.

Recent near-misses highlight the fragility of these trends. The index recorded three double-digit years from 2012 to 2014 and again from 2019 to 2021, but both streaks ended when the market slipped less than 1% in 2015 and fell around 19% in 2022.

Calendar patterns suggest a favorable environment for the remaining weeks. Since 1950, the index has gained more than the current 2.4% buffer in just six years when measured from the last close on or before Oct. 20 to year-end: 1969, 1973, 1974, 2000, 2008, and 2018. The worst of these periods was 1973, which saw a decline of more than 11%. In years where the index was up at least 10% through Oct. 20, it finished the year above that threshold in all 32 such instances since 1950.

While the current lead is substantial relative to historical variance, it remains vulnerable to short-term volatility. A single trading session on Oct. 16 recently reduced the index by around 1%. Analysts note that past streaks have often been followed by losses; for example, the index dropped about 12% in 1946 and roughly 7% in 1953. The run that ended in 1999 was followed by a nearly 10% decline in 2000.

Despite these historical precedents, the small sample size limits predictive power. Market outcomes depend more heavily on variables such as interest rates and corporate earnings than on prior year performance. The current setup suggests a high probability of a fourth straight gain, though this does not necessarily indicate future long-term returns.