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The Illusion Of S&P 500 Profit Margins

The Profitability Illusion

The current near-record level profit margins of the S&P 500 are largely an illusion, created solely by the fact that interest costs have fallen precipitously, even as overall debt levels have increased. Operating profitability, is actually below average. As the Fed's Quantitative Easing program is unwound, earnings are at significant risk.

Current profit margins for S&P 500 companies remain near historic highs even as the broader economy struggles and real income growth remains anemic. The stock market trades near record levels supported, if not by fundamentals, by promises of the Fed to hold interest rates near historic lows. Today though, the certainty of those promises is being discussed with potentially very negative consequences for US and Foreign Markets.

Market bulls point to high profitability and supportive market action as well as benign valuation as reason for their continued positive stance. Indeed, market participants are by many measures, as bullish as ever (hedge fund net longs, bullish sentiment).

However, analysts, like myself, who believe that margins tend to be cyclical in nature, caution that today's high margins are a reason for restraint, not celebration. Traditional valuation metrics like P/E ratios, tend to understate the valuation of markets when margins are well above average, as they are today, leaving open to question whether the factors supporting the market are capable of remaining in place for an extended period.

Source: Brett Gallagher, Zack's Investment Research

Bulls will counter that we have witnessed a permanent shift upward in margins given the now global nature of production and the ability of corporations to manage costs better than ever by using offshore operations when beneficial. This same argument is often cited when explaining why US personal income growth remains anemic. While on the surface this is a believable narrative, the data does not back it up.

When margins are decomposed into their component parts:

  • operational factors (sales less the direct costs of production)
  • tax factors (the percentage of sales one forfeits in taxes)
  • financing factors (amounts paid due to corporate financing decisions), and
  • extra-ordinary items (one-off items, not likely to be recurring in nature)

it becomes obvious that the historic profitability of the S&P500 today relies solely on the fact that interest costs have fallen precipitously during the Fed's period of QE even as overall debt levels have increased.

Current net margins are quite high by historical standards (8.04% versus the 15-year average 6.55%). However, "operational margins" (the profitability of a company apart from their taxes and financing decisions) are now actually below average - so much for the benefits of global production. The reason for the discrepancy between margins as generally discussed and operational factors has to do with the very low level of interest expense (1.78% of S&P 500 sales compared to an average of 3.88%), even though overall leverage (debt as % assets) has risen to 14.2% from the long-term average of 11.5% (Averages use year-end figures calculated from Dec 1998 through Dec 2012).

The charts which follow demonstrate this dynamic quite clearly. After a bump during the period 2005 - 2007, interest expenses have fallen dramatically in spite of the fact that debt levels climbed (most precipitously in 2009). I have chosen to show both total debt as well as net debt measures. It is my belief that net debt better hints at corporate vulnerability to leverage as it takes into account "tactical" debt issuance where retained cash can, theoretically, be used to immediately reduce leverage should borrowing costs reverse).


Source: Brett Gallagher, Zack's Investment Research


Source: Brett Gallagher, Zack's Investment Research


Source: Brett Gallagher, Zack's Investment Research

The chart below shows "operational margin" levels since 1998. Current readings are slightly below average. Should interest costs rise and encroach on overall business profitability, it is net margins that will have to suffer disproportionately.


Source: Brett Gallagher, Zack's Investment Research

Two conclusions can be drawn from the above. First, given today's low level of interest rates, further progress in margin enhancement via lowering interest expense without paying down debt would seem limited and operational metrics must improve if current margins are to be sustained.

Secondly, should rates reverse their downward trend, interest costs could have the opposite effect on profitability as they rise dramatically. If interest expenses revert to their historic average, net margins would fall below 6% (all else equal, this results in a 25% earnings decline from today's levels)

IN CONCLUSION, assuming continued sluggishness in economic (and, hence sales) growth, high levels of leverage and a bottoming of interest rates, maintaining margins above the norm is unlikely and reversion to mean becomes a more likely outcome than a secularly higher level of profitability. In such an environment, earnings are vulnerable as are P/E multiples, meaning equities themselves are at risk.

In the next posting to this blog, I will provide long-term return assumptions for US, UK, Continental European and Japanese equities (under a range of margin and P/E assumptions) as well as a variety of government and corporate bond markets using a proven valuation methodology. The results will have significant, if uncomfortable, implications for plan sponsors and other investors.

Disclosure: I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.

Additional disclosure: Brett Gallagher is formerly the Deputy Chief Investment Officer at Artio Global Investors and is currently an independent market analyst.