The Stock Market’s Election Day Rally Just Taught Investors a Crucial Lesson

Mr. Market was a fictional character created by Benjamin Graham, the man who helped to train Warren Buffett. The stock market’s response to the mid-term election results is almost the perfect example of how Mr. Market works in the real world. And all you need to see to understand is two days of performance of Vanguard S&P 500 ETF (VOO -0.38%). Here’s a look at Graham’s Mr. Market and why the election-day rally is a lesson you’ll want to remember for the rest of your life.

Who is Mr. Market?

Benjamin Graham was a famous investor and a teacher at Columbia University. That’s where he taught Warren Buffett before hiring the man whose investment success earned him the nickname “The Oracle of Omaha”. However, Buffett already knew about Graham because he’d read Graham’s seminal investment book, The Intelligent Investor. If you haven’t read it, you should. It is filled with timeless investment wisdom.

Image source: Getty Images.

While the book is a non-fiction work, it includes the fictional character Mr. Market. Mr. Market is your business partner. He is prone to swinging between extreme enthusiasm and extreme pessimism. When he’s enthusiastic, he will offer to buy your half of the business for way more than it is worth. When he is pessimistic, he will offer to sell you his half of the business for much less than it is worth.

That, in a fun little story that is easy to understand and relate to, is how the market works. Sometimes stock prices are shockingly high for seemingly no reason. Other times they are so low that it is hard to understand. And Mr. Market’s mood swings can happen surprisingly quickly. But Benjamin Graham didn’t suggest that investors make rapid-fire trades; instead, he recommended focusing on fundamentals. He often explained that Wall Street is a voting machine in the short term, but a weighing machine over the long term.

Election day and the aftermath

There couldn’t have been a better example of the market being a voting machine driven by an emotional Mr. Market than what happened after election day. After election results came in, the market rose dramatically. Then, the very next day, the market gave back all of those gains, and then some. The chart below shows it wasn’t just the S&P 500 index that was impacted.

VOO Chart

VOO data by YCharts

Investors, as a group, traded like Mr. Market on his optimistic days, only to reverse course and trade like Mr. Market on his pessimistic days. Two days and two very different Mr. Markets. If you were trying to time the market, instead of focusing on a company’s fundamentals, you would have been whipsawed (and maybe suffered a little whiplash, too). And, a little over a week later, the indexes have settled back to about where they were before the post-election rally. So all that trading turned out to be a big nothing. If you just sat back and continued to hold a portfolio of well-run companies, that tumultuous period wouldn’t have had any lasting impact on your finances.

A lifelong lesson worth remembering

The big takeaway here is that you shouldn’t let your emotions drive your investment decisions. That’s easy to say, but hard to do. Buffett has long advocated a buy-and-hold strategy, with a focus on company quality. You can apply that to a growth, value, or income approach, but the key is to avoid following along with Mr. Market’s mood swings. As the election rally shows, Wall Street’s mood can switch very quickly. It is highly unlikely that you will be able to time those swings without eventually getting hurt by them.

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