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S&P 500 Sector Weightings: Another Financial Toolbox Gizmo

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Sector Weightings: Another Financial Toolbox Gizmo

The ever-elusive $64,000 question of “Where does the stock market go from here?” is as popular a question today as it was a century ago. All you have to do is turn on CNBC to find an endless number of analysts, strategists, journalists, economists, and other talking heads guessing on the direction of stock prices. So many people are looking to make a quick buck or get a hot tip, but unfortunately investing is like dieting…it takes hard work and there are no simple solutions. As much as the pundits would like to make this investment game sound like a scientific certainty, in reality there is a lot of subjective art, experience, and luck that goes into successful investment outcomes. Consistent followers of Investing Caffeine understand there are a number of tools I use to guide me on the direction and level of stock prices, and three of my toolbox gizmos include the following:

  • Earnings (Stock prices positively correlated)
  • Interest Rates (Stock prices inversely correlated)
  • Sentiment (Stock prices inversely correlated)

While these and other devices (see SHGR Holy Grail) are great for guesstimating the direction of longer-term stock prices, sector weightings are also great tools for identifying both overheated and unloved segments of the market. Take an extreme example, such as the S&P 500 Technology historical sector weighting in the year 2000. As you can see from the Bespoke Investment charts, the Technology sector went from about a 5% weighting of the overall market in the early 1990s to around 36% at the 2000 peak before dropping back down to 15% after the Tech Bubble burst. If you fast forward to the 2008-2009 Financial Crisis, we saw a similar “bubblicious” phenomenon rupture in the Financial sector. During 1980 the Financial segment accounted for approximately 5% of the total S&P 500 Index market capitalization in 1980 and skyrocketed to a peak of 23% in 2007, thanks in large part to a three decade bull-run in declining interest rates coupled with financial regulators asleep at the oversight switch.

While some segment weightings are currently above and below historical averages, the chart shows there is a tendency for mean reversion to occur over time. As I’ve written in the past, while I believe the broader market can be objectively be interpreted as reasonably priced in light of record earnings, record low interest rates, and a broader skeptical investing public ( see Markets Soar and Investors Snore), I’m still finding expensive, frothy sub-sectors in areas like money losing biotech and social media companies. The reverse can be said if you examined the 2000 period – the overall stock market was overpriced at its 3/24/00 peak (P/E ratio of about ~31x), but within the S&P 500 stocks there were bargains of a lifetime if you looked outside the Tech sector. Consider many of the unloved “Old Economy” stocks that got left behind in the 1990s. Had you invested in these forgotten stocks at the peak of the 2000 market (March 24, 2000), you would have earned an equal-weighted average return of +430% (and significantly higher than that if you included dividends):

Caterpillar Inc (CAT):                        +416%

Deere & Co (DE):                                  +367%

FedEx Corp (FDX):                             +341%

Ingersoll-Rand Co (IR):                    +260%

Lockheed Martin Corp (LMT):       +811%

Three M Company (MMM):            +254%

Schlumberger Ltd (SLB):                 +158%

Union Pacific Corp (UNP):           +1,114%

Exxon Mobil Corp (XOM):               +148%

                                                  Average +430%

That +430% compares to a much more modest +36% return for the S&P 500 over the same period. What this data underscores are the perils of pure index investing and highlights the room for active investment managers like Sidoxia Capital Management to generate alpha.

There are many ways of analyzing “Where does the stock market go from here?,” but whatever methods you use, the power of examining sector weightings and mean reversion gizmos should be readily accessible in your investment toolbox.


Wade W. Slome, CFA, CFP®

Plan. Invest. Prosper.

DISCLOSURE: Sidoxia Capital Management (SCM) and some of its clients own FDX; non-discretionary positions in DE, LMT, MMM, SLB, XOM, and a range of positions in certain exchange traded fund positions, but at the time of publishing SCM had no direct position in CAT, IR, UNP, or any other security referenced in this article. No information accessed through the Investing Caffeine (IC) website constitutes investment, financial, legal, tax or other advice nor is to be relied on in making an investment or other decision. Please read disclosure language on IC Contact page.


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