The market only rallied on 6 of the past 21 post-Election Days.

What's more, stocks have historically gone down the day after Election Day. It hasn't mattered much if it was a Democrat or Republican winning, if the incumbent party (or president) was re-elected or if the outcome was considered an upset.

The S&P 500 has risen an average of 0.2% in the first three days after Election Day going back to 1932. And the market is up more than 1%, historically, between Election Day and the end of the year.

http://money.cnn.com/2016/11/10/investing/markets-stocks-donald-trump-rally/index.html