Prediction: The Stock Market Is About to Do Something President Trump Will Hate

Presidents love rising stock markets because voters tend to notice their 401(k) balances before they notice legislative details. That’s especially true heading into a midterm election year, when political messaging shifts from campaign promises to real-world results. Yet history suggests President Donald Trump may soon run into a familiar Wall Street problem — midterm-year volatility.

Surprisingly, the stock market’s weakest stretch in the four-year presidential cycle has historically arrived during midterm election years. And the timing could hardly be worse for the party in power. According to data shared by Carson Group chief market strategist Ryan Detrick on X, the S&P 500 has suffered an average peak-to-trough decline of 17.5% during midterm years since 1950.

That’s not just a bad headline for investors. It could become a political headache for Trump, too.

Midterm Years Have a Habit of Turning Ugly

Let’s start with the numbers because they tell a pretty consistent story.

According to Carson Investment Research and FactSet data cited by Detrick, the average intra-year decline during midterm years reached 17.5% dating back to 1950. That compares with average pullbacks between 11.2% and 12.9% during the other three years of the presidential cycle.

Here’s how the cycle stacks up:

That says investors should expect more turbulence during midterm years than almost any other period.

And history shows the weakness often arrives late in the year — exactly when election season dominates headlines. Detrick noted that midterm-year market lows historically tend to occur around late summer or early fall, with many troughs appearing in September.

That timing matters.

A market correction in February barely registers with casual investors. A correction in September, when voters are paying attention daily, hits differently. Retirement accounts feel smaller. Consumer confidence weakens. Financial news coverage intensifies. Regardless of how you look at it, falling stock prices create difficult optics for the sitting president.

Why This Matters So Much for Trump

Trump has long treated the stock market as a scoreboard for his presidency. During both terms, he repeatedly pointed to stock gains as evidence his economic policies were working.

That creates a political risk if the historical midterm pattern repeats itself in 2026.

Control of Congress is already difficult for the incumbent party during midterms. Since World War II, the president’s party has lost House seats in nearly every midterm election cycle. A weakening market heading into the fall could add fuel to that trend.

Granted, voters don’t base decisions entirely on the S&P 500. Inflation, wages, immigration, and geopolitical issues all matter. But consumer psychology and market performance often move together. When portfolios decline 15% to 20%, confidence usually declines with them.

That could become especially problematic for Trump because much of his second-term agenda still depends on congressional support. Tax proposals, deregulation plans, spending priorities, and trade initiatives become much harder to pass if Republicans lose control of either the House or Senate.

In short, a late-year market correction could threaten more than investor returns. It could slow Trump’s policy momentum during the final two years of his presidency.

The Twist Investors Shouldn’t Ignore

Here’s where things get interesting for smart investors.

The same historical data that warns about midterm-year declines also points to unusually strong rebounds afterward. According to Detrick’s research, the S&P 500 has generated an average return of 31.7% during the 12 months following those midterm-year lows.

That’s an eye-popping number.

Some rebounds were even stronger:

• After the 1982 low, the S&P 500 gained 57.7% over the following year.
• Following the 2018 correction, the index rallied 37.1%.
• Detrick noted the market has never been lower one year after a midterm-year trough since 1950.

That doesn’t guarantee history repeats itself this time. Markets never follow scripts perfectly. Federal Reserve policy, inflation trends, corporate earnings, and geopolitical events still matter.

That said, the pattern is hard to dismiss because it has repeated across multiple economic cycles, wars, inflation spikes, recessions, and political environments.

Key Takeaway

When all is said and done, investors may need to separate short-term political drama from long-term market opportunity.

History suggests midterm election years often bring sharp volatility, with average declines reaching 17.5% and weakness frequently peaking around September — precisely when voters focus most heavily on politics. That’s a setup President Trump would likely hate because falling markets can undermine confidence in the party controlling Washington.

But history also shows those declines have often created powerful buying opportunities. The average 31.7% rebound following midterm-year lows suggests patient investors who keep perspective during volatility have historically been rewarded.