Wednesday, September 23, 2009

Democratic Presidents Have Better Stock Market Performance

Research suggests that stock market performance can be connected to the election cycle and the party that is in power. Interestingly, one paper found that 1 year after an election, democratic presidents presided over better performing stock markets than republican presidents. See the following post by James Picerno, for more on this.

Studying the election cycle and the stock market isn't new, but that doesn't stop inquiring minds from taking a fresh look at the numbers. CXO Advisory Group offers yet another perspective, albeit with middling results. As this research concludes,

"..there appear to be both long-term and short-term connections between the U.S. national election cycle and stock market performance, with presidential term year 3 (1) the best (worst) and a tendency for a brief election-time rally. However, the subsamples for presidential term year analysis are very small, so confidence in related tendencies is very low."

Meanwhile, a popular research paper from recent history advises that "the excess return in the stock market is higher under Democratic than Republican presidencies." Of course, that was from the vantage of 2003. Will the trend hold over the remaining years for the present incumbent? Based on the year-to-date returns so far, one might argue in the affirmative. But with the election more than three years away, a touch of modesty might still be in order.

SEI came to a similar conclusion last year, writing in a research note that "one year following [an] election, the average return of the DJIA was 2.18%. Here, the advantage goes to the Democrats, who averaged 5.43%, with the best year credited to Franklin D. Roosevelt, at 29.96% in 1944. Roosevelt also had the most negative return here; -28.68 during the first year of his first term in 1936. The average during the 9 Republican administrations was -1.07%."

Of course, some think there's enough of a challenge in predicting election outcomes alone without muddying the waters with adding stock market predictions to the game. If you're of a similar persuasion, Professor Ray Fair of Yale is your man. As one of the leading academics parsing the finer points of forecasting elections, he's well versed in the opportunities and limits of quantitative analysis and politics.

This post has been republished from James Picerno's blog, The Capital Spectator.
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