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Top 20 Magic Formula Stocks by Price/Sales Ratio

Continuing a recent thread of articles adding other well known value investing criteria to Magic Formula stocks, today we'll take a look at the price-to-sales ratio. For those interested, previously we've looked at Magic Formula stocks with high dividend yields, as well as Magic Formula stocks with strong relative strength.

Dividend yield and relative strength are both fairly popular and well known screening criteria. Stocks with high dividend yields not only indicate a potential undervalued condition, but also pay cold hard cash to their shareholders that can compound over time. Relative strength as a concept is a fundamental statistic used by technical and momentum traders. Both have been proven to turn up stocks that outperform the market in aggregate.

However, it may come as a surprise that, according to the 50 years of mechanical investing research performed by James O'Shaughnessy and detailed in his book What Works on Wall Street (MagicDiligence review), the single best statistic for finding undervalued stocks that will outperform the market is the largely ignored price-to-sales ratio. O'Shaughnessy set up a portfolio that bought the lowest price-to-sales ratio stocks and renewed them every year, then compared against other portfolios that used the more popular (and some would argue more meaningful) price-to-earnings and price-to-book multiples. Here were the annualized 50 year results of each strategy:

Stocks with Lowest:Annual Return
Price-to-Sales15.4%
Price-to-Book14.4%
Price-to-Earnings11.2%

Price-to-sales outperformed the others by a significant margin. Interestingly, price-to-earnings as the only criteria actually underperformed the market!

The phenomenon of low price-to-sales ratio stocks as a good mechanical screening strategy is not completely unknown. Ken Fisher, son of investing legend Philip Fisher and a member of the Forbes 400 richest people in the U.S., wrote the book Super Stocks, where the entire focus of the book is on choosing low price-to-sales issues.

Clearly there is something to this strategy, although it's use is not intuitive. Most stocks with low price-to-sales ratios also carry very low operating margins, which means the company relies on volume to drive profit growth. Examples of these kinds of stocks are retailers or resellers who buy in bulk and sell smaller lots at a markup. These kinds of businesses have difficulty building sustainable competitive advantages, as the industries they play in are either commodity or very competitive. Economies of scale are really the only competitive advantage that can survive the test of time, and economies of scale are one of the less durable ways of building an economic moat, a requirement for Top Buy consideration.

Interestingly, the Magic Formula stocks with the lowest price-to-sales ratio don't necessarily fall into the logical assessment made above. Here are the top 20 Magic Formula stocks with the lowest price-to-sales ratio as of last Friday:

TickerCompanyPrice/Sales Ratio
IBASiBasis0.07
ABCAmerisourceBergen0.07
CITPCOMSYS IT Partners0.09
MANManpower0.11
EMEEMCOR Group0.15
PACRPacer International0.16
TKTMTicketMaster0.16
AHCIAllied Healthcare0.17
PCRPerini Corporation0.17
INTXIntersections0.17
STXSeagate Technology0.18
MTWManitowoc0.20
KBRKBR Inc.0.21
GPXGP Strategies0.24
TBITrueBlue0.24
ASFAdministaff0.25
MTRXMatrix Service0.25
FIXComfort Systems USA0.26
RSHRadioShack0.29
WDCWestern Digital0.33

Two things jump out about this list of stocks. First of all, these are some remarkably low price-to-sales ratios, which historically even for low margin businesses are above 0.50. Second is the absence of traditionally low P/S industries. Only one (RSH) is a true retailer, and several of these companies are relatively high margin businesses. For example, the two disk drive makers, Seagate (STX) and Western Digital (WDC), run operating margins of 9.6% and 13.3%, respectively, well above the sub-5% op margin expected of low price-to-sales stocks.

We've covered dividend yield, relative strength, and now price-to-sales in further ordering our universe of Magic Formula stocks. Next, we will look at price-to-book ratio, the second best performing single value statistic in O'Shaughnessy's studies.

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Disclosure: Steve owns no stocks referenced here.

Joel Greenblatt and MagicFormulaInvesting.com are not associated in any way with this website. Neither Mr. Greenblatt or MagicFormulaInvesting.com endorse this website's investment opinions, strategy, or products. Investment recommendations on this website are not chosen by Mr. Greenblatt, nor are they based on Mr. Greenblatt's proprietary investment model, and are not chosen by MagicFormulaInvesting.com. Magic Formula® is a registered trademark of MagicFormulaInvesting.com, which has no connection to this website. The information on this website is for informational purposes only and solely represents the views and opinions of the author. No warranty is provided or implied as to the accuracy, completeness, or timeliness of this information. This information may not be construed as investment advice of any kind, nor can it be relied upon as the basis for stock trades. Alexander Online Properties LLC, the proprietor of this website, is not responsible in any way for losses or damages resulting from the use of this information. Alexander Online Properties LLC is not a registered investment advisor. All logos are trademarked properties of their respective companies.

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