As elections approach in the United States, investors are closely watching the stock market's behavior. Historically, the market, particularly the S&P 500, has performed well after these political events. This index is a key measure of market health. It has consistently shown gains in the year following both midterm and presidential elections.
Analyzing past data shows that after both types of elections, the index averaged a 0.2% increase after one day and one week, and a 1.1% rise after a month. A year later, the S&P 500 typically gained an average of 13.7% following both midterms and presidential elections, with positive returns occurring in 91% of cases. From 1982 through 2022, the index rose after all 11 midterm elections.
Despite this historical trend, short-term returns can be unpredictable, especially following presidential elections where results can lead to slightly negative average returns immediately after. Ryan Detrick, chief market strategist at Carson Group, noted that pre-election anxiety often affects markets. But once the uncertainty clears, markets tend to rebound. He observed that a divided government, where one party controls the White House and another holds at least one house of Congress, is generally favored by the market.
When no single party dominates, the S&P 500 has risen an average of 15% after a year, with positive returns in 14 out of 15 scenarios. In contrast, when elections lead to single-party control, the index has gained an average of 11.5% over the same period. Detrick explained that major power shifts make markets nervous due to potential for excessive spending and policy changes.
Looking at historical examples, when Democrats have held Congress with a Republican president, such as during the midterms of 1986, 1990, and 2006, the S&P 500 saw a 0.5% drop the day after the election. Yet, it climbed 3.4% a month later and 10.9% after a year. However, it's important to remember that elections can coincide with other major market influences.
The S&P 500's worst year after an election was in 2000, with a 22.1% fall due to the dotcom crash. Conversely, its best post-election year was after 2020, with a 38.3% gain as markets bounced back from the COVID-19 selloff.
Market analysts warn that factors like Federal Reserve policies and corporate earnings cycles weigh more heavily on market performance than election outcomes. For example, in 2018, even though Democrats took control of the House during President Donald Trump's first term, the S&P 500 closed the year down 6.2% due to the Fed's decision to hike interest rates four times. Still, the market rose 11.7% a year after the election.
Currently, the tech sector and the rise of AI are major market drivers. Detrick suggests that as long as AI continues to spur growth and the economy stays strong, the bull market could continue. However, a Democratic sweep of both the House and Senate might pressure the AI infrastructure expansion, causing investors to tread more carefully.
Global factors also affect market dynamics. Rising bond yields and a mini debt crisis in France have added to market volatility. Moreover, geopolitical tensions could escalate post-election. Jim Reid, Deutsche Bank's global head of macro and thematic research, emphasized that while historical trends hint at a possible rally, current concerns about AI, geopolitical issues, and the bond market remain pressing. He stressed that seasonality isn't the sole determinant of market outcomes, and these factors will continue to shape investor sentiment.
