Wall Street is entering 2026 with stocks near record highs, a second Trump term in the White House and a growing chorus warning that the market’s long run is living on borrowed time. The question investors care about is not whether the next big drop will ever arrive, but whether the combination of stretched valuations and President Donald Trump’s policies makes a crash in the coming year especially likely. I set out to weigh 155 years of market history against today’s political and economic backdrop to see what the data, not the headlines, actually suggest.
The historical record does point to a sizable decline at some point in the not-too-distant future, yet it also shows that timing those breaks is notoriously difficult and that long-term investors often emerge ahead even when they live through brutal drawdowns. The evidence around Trump’s first term, the current valuation extremes and the presidential cycle all complicate the simple narrative that a second Trump presidency automatically equals disaster for stocks.
What 155 years of history really say about crashes
Over more than a century, U.S. equities have moved in powerful cycles of boom and bust, and the current bull market is already pressing into the upper range of those historical runs. Long-run studies of total returns going back roughly 155 years show that extended periods of above-average gains are almost always followed by a sizable decline, which is why some analysts argue that a meaningful pullback is statistically “expected” in the relatively near future. As one review of that history puts it, History makes it clear that a sizable stock market decline is expected in the presumed not-too-distant future, although the exact timing is uncertain and the impact depends heavily on an investor’s time horizon.
When I look at those long data sets, what stands out is not just the frequency of crashes but the power of recoveries. A chart of Hypothetical growth shows that a $1 investment made on 12/31/1925 and left alone, with dividends reinvested, would have compounded dramatically by 12/31/2022, even though that period included the Great Depression, stagflation, the dot-com bust and the global financial crisis. The Data are a reminder that while a crash at some point is almost guaranteed, the bigger risk for long-term savers is often being out of the market entirely rather than enduring volatility.
Trump’s first term: big gains, bigger valuations
Any forecast for 2026 has to start with what happened the last time Trump occupied the Oval Office. During his first term, The Dow Jones Industrial Average, the S&P 500 and the Nasdaq Composite all delivered outsize returns as corporate tax cuts and deregulation helped push profits and share prices higher. Analysts note in particular that President Donald Trump’s tax policy has lit a fire under a trillion-dollar investment trend that companies like Apple, Alphabet and Nvidia are taking full advantage of, a dynamic that has concentrated market leadership in a handful of mega-cap names.
Those earlier gains are now colliding with some of the richest valuations in modern history. As of the closing bell on Dec. 29, the Shiller P/E, a cyclically adjusted measure of earnings, clocked in with a multiple of 40.59, a level seen only a few times before major bear markets. Analysts who focus on valuations argue that such a historically pricey stock market sets the stage for a challenging year for stocks, regardless of who sits in the White House. In that sense, the first historical headwind has nothing to do with Donald Trump personally and everything to do with the price investors are currently willing to pay for each dollar of earnings.
Valuation alarms: CAPE, Shiller and statistical red flags
Beyond the headline Shiller P/E, other valuation gauges are also flashing warning signs. Investors tracking the cyclically adjusted price-to-earnings ratio, or CAPE, point out that there are only two other times in history when this ratio soared to similar heights, both preceding painful downturns. When I weigh that against the long-run record, it is hard to escape the conclusion that, statistically, this is one of the priciest stock markets in history and that future returns from these levels are likely to be lower than average.
That view is echoed in separate analysis that describes how, Statistically, this is one of the priciest stock market’s in history and that the first historical headwind has nothing to do with Donald or any other political figure. Instead, the concern is that when valuations reach extremes, even modest disappointments in earnings, growth or policy can trigger outsized reactions in Wall Street’s benchmark stock index. That does not guarantee a 2026 crash, but it does mean the margin for error is thin and that investors should be realistic about the trade-off between potential upside and downside from here.
Do presidents and elections really move markets?
It is tempting to pin market outcomes on whoever is in the Oval Office, yet the historical record suggests presidents matter less than many investors assume. A review of S&P 500 performance by Presidential Term shows that under Eisenhower 1 the index gained 70.7%, under Eisenhower 2 it rose 34.3%, and under Kennedy+Johnson 1 it climbed 44.3%, with Johnson 2 adding another 17.4%. Those wide swings across different administrations underscore that markets respond to a mix of global growth, interest rates, innovation and sentiment, not simply to the party or personality in power.
Election-year jitters are real, but they tend to be short-lived. One analysis of how campaigns affect stocks notes that Presidential elections typically only have a minor impact on the stock market, with some extra volatility around the vote but little lasting effect on long-term returns. The same research emphasizes a Key point for investors: There is usually extra volatility in election years, but over time, the occupant of the White House often matters less than corporate earnings and economic growth. There is also evidence that There are periods when markets rally strongly despite political uncertainty, which should temper any assumption that a Trump presidency alone will dictate 2026’s outcome.
The 2026 bull case: growth, tariffs and sector shifts
For all the focus on crash risk, there is a credible case that stocks could actually soar in 2026. Some Wall Street strategists argue that The Stock Market Could Soar in 2026 as the Economy Booms Despite and his Tariffs, According to several Wall Street forecasts that see U.S. GDP growth staying resilient. In that scenario, robust consumer spending, continued strength in corporate profits and ongoing investment in technology and infrastructure could offset the drag from trade frictions, allowing equities to grind higher even from elevated levels.
Shorter-term market outlooks also highlight how sector leadership could rotate rather than collapse. One 2026 stock market forecast notes that Investors should keep an eye on issues like tariffs, interest rates and earnings concentration and be ready to adjust their portfolios as needed. Yet the same analysis stresses that the three-year-old bull market may still have enough steam to keep going, particularly if cyclical areas such as industrials and energy, which recently stood at 12.3%, pick up the baton from mega-cap tech. In that environment, a second Trump term might shape which sectors win or lose, but it would not automatically end the advance.
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Grant Mercer covers market dynamics, business trends, and the economic forces driving growth across industries. His analysis connects macro movements with real-world implications for investors, entrepreneurs, and professionals. Through his work at The Daily Overview, Grant helps readers understand how markets function and where opportunities may emerge.
