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Politicians and the media do a lot of talking about the economic implications for each political platform during major elections, which mostly creates a lot of noise.
In turn, much of this noise creates market volatility. However, noise and volatility become less relevant over appropriately longer time horizons for equity market investors.
History suggests to us that what happens within the Washington, D.C. beltway has little relationship with the broader U.S. economy and long-term financial market fundamentals. It is the fundamentals that really matter for investors.
PERFORMANCE BY ADMINISTRATION
Consider the price change in the large cap U.S. stocks for every administration since President Hoover. The only relationship between political party and stock market returns is that the market has seemingly performed better under Democratic administrations, but even that is a spurious relationship. Two republican presidents, Herbert Hoover and George W. Bush, had the bad luck of beginning their terms after the stock market had huge runs in the 1920s and the 1990s. Certainly, it could be said that the Hoover bubble burst was brought on by the Great Depression, and the Bush presidency ended with the 2008 financial crisis. However, in both cases, markets were set to fall from lofty price levels. If one were to adjust the results for this bad timing, the stock market returns under both party’s administrations becomes much closer over time.
IMPORTANT ECONOMIC FACTORS
We think that economic fundamentals, such as Gross Domestic Product (GDP) growth rates, and market fundamentals, such as valuations, matter over time. Clearly, history shows that earnings drive stock prices in the long-term. There are periods where prices deviate from earnings, and valuations compress or stretch, but the relationship over the long-term is telling.
Earnings growth drives stock prices, and earnings are heavily dependent on revenue. Revenue growth, in turn, is closely related to the nominal growth in economic activity, or NGDP, as the following graph demonstrates. When thinking about economic and stock market fundamentals, it is important to think about what drives NGDP growth.
Nominal GDP (NGDP) is real GDP, plus inflation. We care more about nominal GDP because revenues and earnings growth includes inflation. In generating its long-term forecast for real GDP (not including inflation), the Bureau of Labor Statistics (BLS) combines a forecast for labor market growth and productivity growth. Labor market growth is based on demographic trends, which move slowly and are relatively easy to measure. Productivity is more difficult to forecast because it is based largely on new technologies and innovation. The BLS forecasts annual growth of roughly 0.5% for the labor force, and approximately 1.8% for productivity growth, for a 2.2% real GDP forecast. To create a forecast for NGDP, we include an inflation factor using market-based inflation expectations as a proxy for what to expect going forward. We like to use the relationship between Treasury bonds and Treasury Inflation Protected Securities (TIPS) of the same maturity, known as the TIPS breakeven spread, to derive what the market thinks inflation will be over the next several years. The market expects inflation of roughly 1.5% over the next 10 years. As a result, we think that 3.7% (2.2% + 1.5%) is a good estimate for NGDP on average over the next several years.