Tiny Margins for Tiny Companies

The U.S. market’s profit margin remains very high, but smaller stocks are suffering. While margins for the largest companies have remained well above their long-term averages, margins for the 40% of stocks in the market with smaller market caps have current margins well below their long-term average. This divergence highlights a broader key point: small caps provide unique opportunities and dangers, but are often lost in a market dominated by large caps.


The rise of passive, index investing has a funny side effect: a myopic focus on “market-level” statistics. All statistics about the market (profit margin, dividend yield, price-to-earnings, ROE, etc.) are mostly the result of the margins, yields, and valuations of the largest stocks. Apple’s profit margin of more than 20%, for example, has a huge influence on the overall market’s margin. A smaller company that also has a very high current margin–like the biotechnology stock Luminex–has virtually no impact on the “market’s” margin–it is lost in the shuffle.

It is useful, then, to separate the market into market cap buckets (quintiles) to see if the same profit margin trends hold true across the market. Spoiler alert: they do not. (Note: hat tip to everyone’s favorite anonymous genius @jesse_livermore for giving me the idea for this chart, I encourage you to submit ideas like his here!)
profit margin by mcap quintile


While the largest companies have incredible recent profit margins, the average result for small companies has moved the opposite direction: today, these smaller companies have a negative aggregate profit margin.


current margins vs. long term average

To be fair, these are averages, so outliers can have a large influence on the results. If I removed Cliff’s Natural Resources from the fourth quintile today, the margin for the group would jump from negative to positive.

Still, if we choose median instead of average to eliminate the outlier effect, the same trends persist.

profit margin by quintile median

Below averages and medians, we find an even starker comparison. Only 5% of the largest stocks had a negative margin (i.e. negative earnings) at the end of April, 2015, but 39% of the smallest stocks had negative margins.

companies with negative margins

This evidence once again highlights the unique nature of the small cap segment of the market. In small caps, there is more “junk,” but arguably also more opportunity.


I am a “factor investor” in the sense that I believe in using objective measures to select stocks in a systematic fashion. But I worry that more and more people agree with my preferred method of investing.

It seems that every day I get an email with a new “factor” ETF offering based on the familiar themes of value, momentum, yield, and quality.  If everyone agrees that these tilts work (and invests accordingly), then they may stop working.

But most active ETFs do not delve into small-cap space because of liquidity concerns. I think this is a good thing for active small cap investors. As more and more investors seek to “arbitrage” the value, quality, yield, and momentum factors, we would be wise to invest part of our portfolio in areas of the market where there are limits to arbitrage. In small caps there are often trends–good and bad–that get lost in market level statistics. In this case, the trend appears negative on the surface (and for these companies, I guess it is). But the silver lining is how different these small companies tend to be. For active managers, different is good.

While everyone focuses on the overall market, we may want to look elsewhere–to beneath-the-radar small cap stocks.



Note: For this piece, I use U.S. domiciled companies only, and require a market cap of at least $200MM, inflation adjusted.