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Table 7 Event study results (Trim 1%)

From: Effect of blockchain technology initiatives on firms’ market value

 

Day − 1

Day 0

Day 1

[Days − 1 and 0]

[Days 0 and 1]

[Days − 1 to 1]

Panel A: market model (n = 112)

      

Mean abnormal return (%)

− 1.05

3.69

− 0.31

2.64

3.38

2.33

Median abnormal return (%)

− 0.24

0.09

0.12

− 0.19

0.25

0.09

% Positive abnormal return

36.61

52.68

53.57

44.64

56.25

53.57

Cross-sectional t test

− 2.79**

2.52*

− 0.54

1.84 a

2.38*

1.74 a

Patell’s test

− 2.01*

4.32***

1.27

1.63

3.95***

2.07*

Corrado rank test

− 2.39*

2.70**

0.72

0.22

2.42*

0.59

Wilcoxon signed rank test

− 2.87**

2.01*

0.01

− 0.13

2.01*

0.68

Generalized sign test

− 2.36*

1.05

1.24

− 0.66

1.80 a

1.24

Panel B: market-adjusted model (n = 112)

      

Mean abnormal return (%)

− 0.94

3.70

− 0.21

2.77

3.50

2.56

Median abnormal return (%)

− 0.29

0.17

0.11

− 0.07

0.40

0.07

% Positive abnormal return

38.40

54.46

53.57

47.32

61.61

50.70

Cross-sectional t test

− 2.59*

2.55*

− 0.38

1.94 a

2.48*

1.93 a

Patell’s test

− 1.81 a

4.55***

1.45

1.94 a

4.25***

2.42*

Corrado rank test

− 2.51*

2.56*

0.59

0.04

2.22*

0.37

Wilcoxon signed rank test

− 2.63**

2.15*

0.24

0.24

2.51*

1.23

Generalized sign test

− 2.27*

1.13

0.94

− 0.38

2.21*

0.19

Panel C: mean-adjusted model (n = 112)

      

Mean abnormal return (%)

− 0.92

3.57

− 0.10

2.65

3.47

2.55

Median abnormal return (%)

− 0.41

0.19

0.11

− 0.27

0.40

0.39

% Positive abnormal return

35.71

55.36

57.14

44.64

61.61

55.36

Cross-sectional t test

− 2.48*

2.45*

− 0.18

1.84 a

2.44*

1.88 a

Patell’s test

− 1.41

4.06***

1.99*

1.87 a

4.28***

2.68**

Corrado rank test

− 2.41*

2.41*

1.05

0.00

2.45*

0.61

Wilcoxon signed rank test

− 2.64**

1.94 a

0.87

0.24

2.94**

1.24

Generalized sign test

− 2.69**

1.47

1.84 a

− 0.80

2.79**

1.47

Panel D: size-adj model (n = 102)b

      

Mean abnormal return (%)

− 0.93

3.09

0.10

2.16

3.19

2.26

Median abnormal return (%)

− 0.40

0.18

0.12

− 0.32

0.42

0.40

%Positive

36.27

53.92

56.86

44.12

61.76

54.90

Cross-sectional t test

− 2.37*

2.09*

0.17

1.49

2.15

1.62

Patell test

− 0.72

3.17**

1.84 a

1.74 a

3.54***

2.48*

Corrado rank test

− 2.09*

2.07*

1.86

− 0.01

2.78**

1.06

Wilcoxon signed rank test

− 2.47*

1.66 a

1.19

− 0.18

2.96**

1.14

Generalized sign test

− 2.78**

0.78

1.38

− 1.20

2.36*

0.98

Panel E: industry-adj model (n = 112)

      

Mean abnormal return (%)

− 0.85

3.64

− 0.03

2.79

3.61

2.76

Median abnormal return (%)

− 0.39

0.21

0.11

− 0.18

0.46

0.43

%Positive

36.61

55.36

55.36

47.32

61.61

56.25

Cross-sectional t test

− 2.33*

2.51*

− 0.05

1.95a

2.56*

2.07*

Patell test

− 0.82

4.03***

1.83a

2.27*

4.14***

2.91**

Corrado rank test

− 1.96*

2.55*

1.92a

0.41

3.16**

1.45

Wilcoxon signed rank test

− 2.52*

2.18*

1.01

0.54

3.27**

1.76a

Generalized sign test

− 2.74**

1.23

1.23

− 0.47

2.55*

1.42

  1. *p < 0.05, **p < 0.01, ***p < 0.001
  2. ap < 0.10
  3. bWe could not get the decile rankings information for 10 firms from Wharton research data service