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Last week I ran a post about the median stock trading at an all-time high valuation that included this chart from “Millennial Investor” Patrick O’Shaughnessy showing historical EBITDA yields for all stocks in the universe greater than $200 million market capitalization from the period 1971 to date:

(click to enlarge)

I backtested the returns for all three portfolios during the most extreme period in the data (from 1999 to date marked in the red square above). I limited my universe to the stocks in the S&P 500 and lagged the fundamental data by 6 months (so portfolios formed 6/30 in year t use data from 12/31 in year t-1). All portfolios are equally weighted (the 50 stocks in each for the Cheap and Expensive portfolios hold 2 percent of the theoretical portfolio capital at inception and the 500 stocks in the Market portfolio hold 0.2 percent of portfolio capital at inception). Here’s the return chart for the three portfolios:

(click to enlarge)

(c) Eyquem Investment Management LLC

Here are the return statistics for each of the three portfolios (the cells are conditionally formatted such that green indicates a low yield or a high return, both “good” things, and red indicates a high yield or a low return (both “bad” things):

(click to enlarge)

(c) Eyquem Investment Management LLC

There are a few things to note in the chart above.

  • First, the median stock is the most expensive it has been (in the data) at an EBITDA yield of 8.2 percent (here’s my overview of the research on the enterprise multiple — the inverse of the EBITDA yield). The previous peak was 9.2 percent in 2007, and before that 9.7 percent in 1999. We see something similar in the Cheap portfolio too. It is the much more expensive than average, and is exceeded only by 2007 (15.1 percent), and 2002 (14.7 percent–the all-time high).
  • Second, it’s no accident that the worst returns are associated with the lowest EBITDA yields. If we compare the performance of the portfolios, we can see that the Expensive portfolio always has the lowest yields and has consistently underperformed the Market and Cheap portfolios (with the only exception being the last year of the dot com bubble in 1999). The Cheap portfolio always has the highest yields and has consistently outperformed the Market and Expensive portfolios (again, with the only exception being the last year of the dot com bubble in 1999).
  • If we look within portfolios and compare one year to the next, we can see that, though the relationship isn’t perfect, the too low yields produce low returns. (The relationship persists perhaps because it isn’t perfect.) The worst returns don’t necessarily occur in the year of overvaluation, but they follow closely. For example, the worst yearly performances for the Market occurred in 2008 (-31.1 percent), 2007 (-11 percent) and 2001 (-6.6 percent) and 1999 (-1.9 percent), and those dates roughly conform with the lowest yields.
  • Finally, the worst years for the Cheap portfolios were in 2008 (-32.1 percent), 1999 (15.7 percent), 2011 (-8.4 percent), 2002 (-5.4 percent), and 2007 (-5.3 percent), and those dates also roughly conform with the dates that the portfolios held stocks with the lowest yields.

There’s no magic to value investment. Low yields produce low returns. High yields produce high returns. The relationship isn’t perfect. Outlier years like 1999 and 2011 will occur occasionally, but, on average, you’re better served buying Cheap stocks, and remaining cautious during periods when the median stock in the market offers a historically low yield, like right now.

Source: Implications Of All-Time-High Median Valuations (Backtest 1999 To Date)