Strangely, signals about improving profitability (b∆OPM) and advertising intensity
(bADV) show negative correlations with one-year MAR. This may imply that firms with
large portion of advertising expenses have lower subsequent returns compared to firms with
less advertising spending. The interpretation here is inconsistent with the fact that high level
of advertising expenses highlights firm’s future investment, and is a reliable signal for future
growth. However, signals relating to actions that may depress current earnings and book
value, but boost future growth – capital expenditures (bCAPEX) and advertising expenses
(bADV), have weak correlations between each other, which compares favorably with
Mohanram (2005).
Significant correlations between the composite scores and subsequent market-adjusted
returns (MAR) provide evidence of return predictability based on past financial measures.
With one-year MAR, which is corresponded to a four-month lapse after accounting period,
correlations for all composite scores are significantly positive, indicating that returns are
predictable based on a combination of financial information that is available at the time of
portfolio construction. However, the correlations between the composite scores and returns
decrease when the investment horizon is lengthened to 2 years. Also, the strength of the
correlations becomes less significant. One possible reason is that the information contained
in the score has already been integrated into stock prices.
Strangely, signals about improving profitability (b∆OPM) and advertising intensity(bADV) show negative correlations with one-year MAR. This may imply that firms withlarge portion of advertising expenses have lower subsequent returns compared to firms withless advertising spending. The interpretation here is inconsistent with the fact that high levelof advertising expenses highlights firm’s future investment, and is a reliable signal for futuregrowth. However, signals relating to actions that may depress current earnings and bookvalue, but boost future growth – capital expenditures (bCAPEX) and advertising expenses(bADV), have weak correlations between each other, which compares favorably withMohanram (2005).Significant correlations between the composite scores and subsequent market-adjustedreturns (MAR) provide evidence of return predictability based on past financial measures.With one-year MAR, which is corresponded to a four-month lapse after accounting period,correlations for all composite scores are significantly positive, indicating that returns arepredictable based on a combination of financial information that is available at the time ofportfolio construction. However, the correlations between the composite scores and returnsdecrease when the investment horizon is lengthened to 2 years. Also, the strength of thecorrelations becomes less significant. One possible reason is that the information containedในคะแนนได้แล้วถูกนำมาเป็นราคาหุ้น
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