This paper answers the comments of readers of our earlier paper. Additional insight is gained by adding recent data to show the effect of following Value Line Investment Service recommendations in active stock market trading over the years 1974–81. We show that Value Line makes a statistically significant contribution, which cannot be explained by the Beta risk factor. We offer our results as an unexplained divergence from the Efficient Market Hypothesis, but with the tentative hypothesis that investment timing (i.e., the fact that the Efficient Market Hypothesis does not operate instantaneously) may explain much of the abnormality.
If you can't find a tool you're looking for, please click the link at the top of the page to "Go to old article view". Alternatively, view our Knowledge Base articles for additional help. Your feedback is important to us, so please let us know if you have comments or ideas for improvement.