Presidential Elections and the Stock Market

Next month, Americans will head to the polls to elect the next president of the United States.

While the outcome is unknown, one thing is for certain: There will be a steady stream of opinions from pundits and prognosticators about how the election will impact the stock market. As we explain below, investors would be well‑served to avoid the temptation to make significant changes to a long‑term investment plan based upon these sorts of predictions.

SHORT-TERM TRADING AND PRESIDENTIAL ELECTION RESULTS

Trying to outguess the market is often a losing game. Current market prices offer an up-to-the-minute snapshot of the aggregate expectations of market participants. This includes expectations about the outcome and impact of elections. While unanticipated future events—surprises relative to those expectations—may trigger price changes in the future, the nature of these surprises cannot be known by investors today. As a result, it is difficult, if not impossible, to systematically benefit from trying to identify mispriced securities. This suggests it is unlikely that investors can gain an edge by attempting to predict what will happen to the stock market after a presidential election.

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