The Daily Workshop
Report
by Robert Sheard
(TMF Sheard)
LEXINGTON, KY. (September 4, 1997)
Scroll to the bottom for year-to-date Growth and Value Screen results.
Continuing our discussion of the potential for using Relative Strength as a useful screen with large-cap stocks, I'd like to present today some astonishing numbers from an informal study I did recently. But before you "ooh" and "ah" over the compound return, I need to lay out all the disclaimers.
The way I performed the test was to use the screening software from Value Line, so the field of stocks is limited to some 1500 American stocks. The first screens I performed were by market capitalization and location. Value Line includes any stock with a current market cap greater than $5 billion in its field of large caps (and 336 of them were listed as U.S. companies).
The big disclaimer in this study is that the 336 companies in that list today weren't all in the large-cap group over the entire last decade. I simply don't have the data to run that test for each year separately. So keep that in mind when examining the following results.
I sorted the group of 336 stocks each year from 1987 to the present by the previous year's total return (a proxy for Relative Strength). I then selected the 15 top stocks each year for inclusion in the next year's group. So, the 15 best-performing stocks in 1987 made up the portfolio for 1988, the best in 1988 were included for 1989, etc.
The results? Phenomenal. The annualized return from the beginning of 1988 through August 27 of this year was an astounding 52%. There were a number of stocks over the years that exploded with monumental gains, similar to the awesome performance in DELL COMPUTERS <% if gsSubBrand = "aolsnapshot" then Response.Write("(Nasdaq: DELL)") else Response.Write("(Nasdaq: DELL)") end if %> over the last two years.
Here are the year-by-year returns since 1988:
1988 11.75% 1989 61.55% 1990 11.00% 1991 126.71% 1992 26.43% 1993 57.24% 1994 42.40% 1995 111.38% 1996 37.83% 1997 55.25% (through 8/27)
Again, the fact that I'm looking somewhat backwards at the group of stocks may "taint" these results to some degree, but I don't think it strikes a fatal blow to the theory. I've looked at a similar screen with all of the stocks in the Value Line universe, regardless of market capitalization and the screen seems to work well there also.
And while I can't verify my theory without a different set of data (to which I don't have access), I suspect using a 6-month total-return screen might work even better than the 12-month screen I've tested here. Over short time frames, the 6-month returns worked very well as a screen for these large caps.
I'll present the results of the test for the entire universe of stocks in tomorrow's report. In the meantime, as James O'Shaughnessy claimed in What Works on Wall Street, "winners continue to win."
Monthly Growth Screens (Jan. 3 to present) 76.47% Relative Strength 34.68% Investing for Growth 24.45% S&P 500 Index 23.27% Low Price/Sales 21.15% EPS Plus RS 19.43% YPEG Potential 15.85% Unemotional Growth 11.83% Formula 90 Annual Value Screens (Jan. 1 to present) 23.79% Dogs of the Dow 22.01% Dow Jones Ind Avg 19.93% Beating the S&P 18.76% Dow Combo 18.01% Unemotional Value 18.01% Beating the Dow 10.64% Foolish Four