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Muddling Through Earnings

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Above-average returns unlikely for now.

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"Most of the time common stocks are subject to irrational and excessive price fluctuations in both directions as the consequence of the ingrained tendency of most people to speculate or gamble ... to give way to hope, fear and greed."
-Benjamin Graham (co-author with David Dodd of Security Analysis, 1934 – considered by many to be the Bible of value investing)

But how does one gauge whether stocks, or in this case the U.S. stock market as a whole, are over- or undervalued? In a post (Stock Markets: Up, Down, Sideways?) last week I attempted to analyze the situation by means of a few price charts and contrarian indicators. This is a follow-up, focusing more on some fundamental aspects.

As a point of departure, it is notoriously difficult to put numbers to U.S. corporate earnings growth in the present troubled economic climate. Matters are further complicated by the sub-prime-related write-downs.

The graph below shows that earnings growth of the S&P 500 Index declined by 25.3% compared with a year ago. Incidentally, the average annual earnings growth since 1955 has been 8.0%.


Click to enlarge

(Source: Plexus Asset Management and I-Net Bridge)

A shrinking economy bodes ill for corporate earnings and current indications are that the S&P 500 Index's earnings could be down by as much as 30% to 40% in year-ago terms by the end of the second quarter this year. This is gleaned from the historical relationship between the U.S. Purchasing Managers Index (PMI) and the S&P 500 Index's earnings growth, as shown in the graph below.


Click to enlarge

(Source: Plexus Asset Management and I-Net Bridge)

Trying to get a grip on forecast earnings is very difficult. Birinyi Associates estimates the S&P 500 Index's 12-month growth at 49.5%, and the IBES numbers of 50.7% through Q2 2009 concur.

My hunch is that these S&P estimates are probably on the optimistic side, especially with U.S. profit margins looking set to shrink further as the economic woes drag on and rising costs make further inroads into profits. At least, the following graph seems to indicate that mean reversion of profit margins has not yet run its course.


Click to enlarge

(Source: Plexus Asset Management and I-Net Bridge)

At current earnings levels the S&P Index 500 Index is trading at a price-earnings ratio (PER) of 21.9 (based on as-reported earnings). This level does not appear particularly cheap when simply considering historical PER averages of 17.1 over 53 years and 22.8 over 10 years.

The key to evaluating valuation levels, however, is to get a grip on the forward numbers. The Birinyi earnings estimate translates into a forward PER of 14.6. On the face of it (and if 50% earnings growth materializes), this looks more attractive but let's dig a bit deeper in order to make sense of the figures.

The so-called "Fed Model" attempts to value stocks relative to bonds and simply states that the real yield of US 10-year Treasury Note should correspond to the S&P 500 Index's earnings yield (i.e. 12-month forward earnings divided by the current index).

Given the current yield on Treasuries of 4.21%, this model equates to a forward PER of 23.8%. If Birinyi's earnings hit the mark, this (rather imperfect) model suggests that stocks are cheap relative to bonds.

But, is it correct to blindly use 10-year Treasuries as the "risk-less benchmark"? Bennet Sedacca, well-respected president of Atlantic Advisors and Minyanville professor, argues that one should use the Ginnie Mae (GNMA) pools with the best overall risk profile as the "risk-less benchmark" to see whether stocks are cheap or not.

GNMA 6% pools are currently yielding 6.00% and have a duration of only 4.15 years – considerably less than the current 8.31-year duration of the 10-year Note. In other words, one is able to earn 1.79% more per year with half of the volatility and still maintain a zero credit risk profile. This translates to a PER of 16.7, arguing that stocks are also a better bet than GNMAs (at least based on the Birinyi estimate).

But this is where it becomes interesting and where one must factor in a risk premium. Adding 2.5% and 7.5% (Sedacca's preference) risk premiums to the GNMA yield, implies PERs of 11.7 and 7.4 respectively. This tells a totally different story, rendering stocks expensive even with forecast 12-month earnings growth of about 50%.

Sedacca provides a neat summary table, which can be seen here (adjusted for the Birinyi numbers and current levels).

In order to get a better feel for the numbers, let's consider the Plexus Valuation Calculator. The diagram is an easy way of determining the expected returns of the S&P 500 Index for different combinations of corporate earnings growth and PERs.


Click to enlarge


The diagram shows that if the Birinyi numbers turn out to be correct and the PER compresses to the long-term average of 17.2, investors could expect a return of 17.8% on their investment over the year. But what happens when the there is less earnings growth and the PER falls to, or below, the long-term average? Not a pretty picture!

Playing around with various combinations of earnings growth and PERs makes for interesting reading. But, more so, it also makes it hard for me to find compelling value when considering the U.S. stock market as a whole.

Lastly, my colleagues at Plexus Asset Management have produced a multi-year comparison of the PER of the S&P 500 Index and the forward real returns. The research covered the period from 1871 to February 2008 and used the S&P 500 Index (and its predecessors prior to 1957). In essence, a total real return index and coinciding 10-year forward real returns were calculated and used together with PERs based on rolling average 10-year earnings. The PERs and the 10-year forward real returns were then grouped in five quintiles (i.e. 20% intervals), showing clearly the strong long-term relationship between real returns and the level of valuation at which the investment was made.


Click to enlarge


Based on the above research findings, with the S&P 500 Index's current 10-year normalized PER of 23.5, investors should be aware of the fact that the market is by historical standards not in cheap territory, arguing for luke-warm long-term returns.

Although this post offers no guidance as to calling market tops and bottoms, it does indicate that it would be irrational to bank on above-average returns from these valuation levels. A muddle-through outlook seems to be what the U.S. stock market has in store. That's the way it looks from here.


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No positions in stocks mentioned.
The information on this website solely reflects the analysis of or opinion about the performance of securities and financial markets by the writers whose articles appear on the site. The views expressed by the writers are not necessarily the views of Minyanville Media, Inc. or members of its management. Nothing contained on the website is intended to constitute a recommendation or advice addressed to an individual investor or category of investors to purchase, sell or hold any security, or to take any action with respect to the prospective movement of the securities markets or to solicit the purchase or sale of any security. Any investment decisions must be made by the reader either individually or in consultation with his or her investment professional. Minyanville writers and staff may trade or hold positions in securities that are discussed in articles appearing on the website. Writers of articles are required to disclose whether they have a position in any stock or fund discussed in an article, but are not permitted to disclose the size or direction of the position. Nothing on this website is intended to solicit business of any kind for a writer's business or fund. Minyanville management and staff as well as contributing writers will not respond to emails or other communications requesting investment advice.

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