By Matt Koppenheffer, The Motley Fool
Filed under: Investing
The StressTest column appears every Thursday on Fool.com. Check back weekly and follow @TMFStressTest on Twitter.
Who would have thought that profits could be putting fear in the hearts of market watchers?
Just yesterday, Robert Lenzner at Forbes wrote that the current rate of corporate profits “will eventually revert to the mean, spoiling the party.” Lenzner isn’t alone. And many of those not focused on mean-reverting corporate profits torpedoing the markets and economy are bemoaning the fact that wages haven’t kept up with the jump in profits. On Fool.com, Morgan Housel took a look at just that earlier this week.
On its face, the case for high profits being worrisome makes sense. Based on numbers from the Federal Reserve, corporate profits were 11.2% of U.S. GDP as of October 2012. That compares to an average of 6.1% going back to 1950. Some of that may reflect a shift in dominant industries — today, manufacturing companies account for a lower share of the economy while financial and service businesses have a higher one. But considering those numbers, it seems almost silly to think that the corporate profit share won’t fall in the years ahead.
So let’s assume for a moment that it’s not a question of whether corporate profits will fall — let’s just assume they will. Now we can focus on the more important question for investors: Would a fall in corporate profits hurt the stock market?
Let’s consider some more numbers.
Source: Federal Reserve and YahooFinance. Analysis performed with Statwing.
If the plots look random, it’s because they are. Based on this data — which goes back to 1950 — there’s no statistically significant relationship between past corporate profit levels and the performance of the S&P 500 over the next year. But a year is like the blink of an eye on the stock market. Let’s take a look at forward five-year S&P 500 performance.
Source: Federal Reserve and YahooFinance. Analysis performed with Statwing.
This time, the data looks like it has more going on. As the Statwing analysis describes it, the two sets of data are “weakly negatively correlated.” In plain English, the higher corporate profits are, the worse the S&P 500 tends to perform over the following five years.
Let’s extend it out to 10 years.
Source: Federal Reserve and YahooFinance. Analysis performed with Statwing.
Once again, Statwing tells us that there is a weak, but significant negative correlation between corporate profit levels and the performance of the S&P 500 over the next decade. However, when we move out to 10 years, the relationship actually weakens, and starting corporate profit levels could be said to “explain” less of the change in the stock market.
So if we go back to the logical story that we started with — that when corporate profits are high, they’re in a position to fall, and therefore will
From: http://www.dailyfinance.com/2013/04/11/could-this-risk-spoil-the-party-on-the-stock-marke/








