Since the late 1890s, the Dow Jones Industrial Average (DJIA) and the benchmark S&P 500 have demonstrated resilience, rising in 26 of the last 33 presidential terms. Under the leadership of former President Donald Trump, stock market performance witnessed marked annualized gains, outpacing most of his predecessors. During Trump’s first term from January 20, 2017, to January 20, 2021, the DJIA, S&P 500, and Nasdaq Composite experienced remarkable upswings of 57%, 70%, and 142%, respectively. Since the initiation of Trump’s second, non-consecutive term, these indices have surged further—gaining 14%, 19%, and 25% respectively, as of mid-April.
This robust performance has attracted investor attention and optimism, yet there lies a cloud of skepticism regarding the sustainability of such upward momentum, prompting fears of a potential stock market crash under Trump’s current administration. While various drivers contribute to these double-digit returns, speculation exists about whether this trend can endure.
It’s essential to recognize that these impressive stock market gains are not solely attributable to Trump’s policies. The ongoing evolution of technologies such as artificial intelligence and quantum computing began prior to his administration’s current term. Industry analysts, such as those at PwC, predict AI could generate a staggering $15.7 trillion in economic value globally by 2030, with quantum computing adding approximately $850 billion by 2040. If these optimistic forecasts hold merit, investors could be looking at a wealth of opportunities.
Moreover, the earning reports of S&P 500 companies have frequently surpassed market expectations. Despite the traditionally low benchmarks for forecasts, these exceeding performance metrics have been pivotal in propelling major stock indices upward.
Conversely, there are undeniable influences from Trump’s fiscal policies on this bullish trend. Specifically, the Tax Cuts and Jobs Act (TCJA) enacted during his first term slashed the corporate tax rate from 35% to 21%, marking the lowest level since 1939. This significant reduction has led to an unprecedented rise in share buybacks among S&P 500 companies, with estimates suggesting these buybacks exceeded $1 trillion in 2025.
When analyzing the potential for a stock market downturn, historical context can provide critical insights. The Shiller Price-to-Earnings (P/E) Ratio, also known as the Cyclically Adjusted P/E Ratio (CAPE), has become a focal point for assessing equity valuations. This ratio, which accounts for inflation-adjusted earnings over a ten-year period, has indicated that we are currently experiencing one of the most expensive stock markets in history. As of mid-April, the Shiller P/E hovered around 40.44, substantially above its historical average of 17.36.
Despite its utility, the Shiller P/E does not predict the timing of market corrections. Nonetheless, it has established a pattern where readings above 30 have historically preceded significant declines in stock prices. Such historical occurrences have led to falls ranging from 20% to as much as 89% for major indices in the past.
While the current elevated Shiller P/E ratio does not guarantee an imminent market crash, it undeniably highlights an increased susceptibility to downturns under the current administration. Investors are cautioned to critically assess their strategies before committing capital, as the historical trends suggest potential volatility ahead.
In light of these dynamics, some analysts have identified alternative investment opportunities that may yield returns surpassing those of the S&P 500. In a market characterized by uncertainty, diversifying one’s portfolio with selected high-potential stocks could prove to be a prudent strategy in navigating the complexities of today’s financial landscape.
