Putting aside the fact that prior to the US Presidential election last November almost everyone believed that a Trump victory would result in a weak stock market, the popular view now is that the stock market has strengthened since the election due to the incoming Trump Administration being more pro-business. It is arguable whether the Trump Administration really will be “pro-business” (early signs are that it won’t be), but in any case, the historical record indicates that the currently popular view is total nonsense.

According to the historical record, the stock market’s performance during a Presidential term has nothing to do with the extent to which the Administration is pro-business. Let’s consider some examples to help make this point, using the Dow Industrials Index as our stock-market proxy and the November election dates as the starting and ending points of a presidential term. It makes sense to use the election dates rather than the inauguration dates given that the financial markets will begin to discount the economic effects of a new president immediately after the election result is known.

First, F.D.Roosevelt probably led the most anti-business administration in US history, but during FDR’s first 4-year term the stock market had a phenomenal gain of about 160%.

Second, Ronald Reagan was supposedly a very pro-business president, but during his first 4-year term the stock market gained only 26%. The stock market’s gain during Reagan’s first term was not only a tiny fraction of the gain achieved during FDR’s first term, it was also less than the roughly 40% gain achieved during the first term of the supposedly anti-business Obama Administration.

Third, the stock market did much better during Reagan’s second term, enabling Reagan to chalk up an 8-year stock-market return of about 120%. This, however, wasn’t substantially better than the 90% gain chalked up by the anti-business Obama and pales in comparison to the 240% gain achieved by the Dow over the course of Bill Clinton’s two terms.