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S&P 500 historically drops 18% on average during midterm elections, with a 70% chance of correction in 2026 and a typical rebound starting in August.
The S&P 500 is expected to experience an average intra‑year drawdown of about 18% this midterm election year, giving investors roughly a 70% chance of a correction before a typical rebound begins in August [1].
| At a glance | |
|---|---|
| Avg. midterm drawdown | 18% |
| Correction odds (2026) | ~70% |
| Avg. post‑midterm gain (Nov‑Apr) | +14% |
| Volatility peak | Right before election day |
Since its inception in 1957, the S&P 500 has posted an average total return of just 1% in midterm election years, with 12 of the 17 midterms resulting in a correction of at least 10% [1]. The typical intra‑year slump averages 18%, meaning the index often falls sharply before stabilizing. The probability of such a correction in 2026 is roughly 70%, based on the same historical record.
Research shows that the six‑month window after the November midterms (November through April) is the strongest segment of the four‑year presidential cycle, delivering an average 14% gain for the S&P 500 [1]. Market volatility also tends to peak just before voters head to the polls, then recedes once results are known [2]. This rhythm suggests that, despite a likely mid‑year dip, the index could start its recovery as early as August, aligning with the historical post‑election bounce.
The anticipated correction coincides with heightened political uncertainty, as the party in power typically loses congressional seats, prompting concerns over fiscal, trade, and regulatory policy direction [1]. While Wall Street projects a 17% upside to 8,146 by year‑end, past median forecasts have missed by an average of 16 percentage points over the last four years, underscoring the difficulty of predicting outcomes in a volatile election environment [1].
The 18% average dip and 70% correction odds highlight the recurring influence of political cycles on equity markets, leaving the August timeframe as a key inflection point for investors watching the 2026 midterm year.
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AI-assisted synthesis by the TrendWatcher Editorial Desk · sourced from 2 outlets · Aug 1, 2026 · How we report
HSBC set a year-end 2026 target of 8,100 for the S&P 500, representing an increase from their previous target of 7,650.
Bank of America analysts suggest the S&P 500 is overdue for a correction because it has only suffered one 5% pullback in 2026 and is entering the September-October period, which historically averages a 0.6% decline.
The S&P 500 has gained more than 12% in 2026 as of September, putting the index on track for its fourth consecutive winning year.
The S&P 500 averages a 0.6% decline during the September-October period based on data dating back to 1928, making it the weakest two-month performance window for the index.