Research Article

Drift and the Risk-Free Rate

Table 1

values for testing . None are significant at 0.05.

Symbol DatesUMPULRT Effect size

AAPL 1-5-2001 to 12-6-2001 0.416 0.413
APD 1-5-2001 to 12-6-2001 0.520 0.517
C 1-1-1983 to 1-1-2000 0.059 0.059
CVS 8-30-2001 to 11-30-2001 0.420 0.397
DAL 11-03-1994 to 02-02-1995 0.914 0.913
F 11-03-1994 to 02-02-1995 0.258 0.226
IBM 3-29-1984 to 07-31-1984 0.618 0.611
K 11-12-1999 to 02-10-2000 0.996 0.995
LMT 1-5-2001 to 12-6-2001 0.237 0.277
PG 11-12-1999 to 02-10-2000 0.457 0.445