Table 4 Volatility spillovers among leading cryptocurrencies and energy and technology companies

50.49

25.38

4.36

16.09

0.49

0.50

0.33

0.31

0.45

0.21

0.87

49.6

25.42

50.66

3.52

15.34

0.75

0.64

0.38

0.28

0.84

0.58

0.61

49.3

8.28

9.32

72.96

4.19

0.60

1.02

0.40

0.13

0.34

0.84

1.48

27.0

18.53

17.84

2.92

57.93

0.30

0.44

0.36

0.15

0.51

0.12

0.26

42.1

0.62

1.15

0.58

0.33

39.72

17.65

13.20

9.25

3.32

4.52

5.77

60.3

0.66

1.24

1.14

0.41

15.00

34.03

16.76

10.82

3.91

4.89

6.68

66.0

0.32

0.50

0.24

0.22

12.96

20.39

38.88

10.78

3.16

3.78

5.31

61.1

0.27

0.46

0.08

0.08

11.89

16.75

13.73

47.22

1.96

2.21

3.52

52.8

0.34

0.61

0.03

0.34

3.79

4.84

2.90

2.03

37.08

21.00

6.73

62.9

0.17

0.54

0.69

0.09

4.71

5.82

3.37

2.19

19.99

33.88

8.45

66.1

0.44

0.77

0.29

0.41

3.48

4.47

2.62

1.49

20.08

21.69

6.70

62.4

0.85

0.97

0.60

0.24

7.40

9.44

6.10

3.04

5.62

7.58

51.47

48.5

55.9

58.8

14.4

37.7

61.4

81.9

60.2

40.5

60.2

67.4

46.4

648.2

106.3

109.5

87.4

95.7

101.1

116.0

99.0

87.7

97.3

101.3

97.9

54.0%

6.3

9.4

− 12.6

− 4.4

1.1

15.9

− 0.9

− 12.3

− 2.7

1.3

− 2.1