Here is a list of the top turnover stocks and the table shows the concentration of volumes in the top 10, top 50 and top 100 stocks. The BSE and the NSE have both been considered.
Month
BSE
NSE
5
10
25
50
100
5
10
25
50
100
Apr-10
10.9
16.9
28.4
40.3
55.0
14.5
24.4
41.0
55.5
70.3
May-10
14.1
23.4
38.4
50.8
64.1
16.6
26.8
47.7
63.3
77.9
Jun-10
11.4
19.6
36.0
49.7
63.5
13.8
23.5
43.9
61.7
76.1
Jul-10
8.6
14.9
27.8
40.3
54.5
11.9
20.2
38.7
55.9
70.3
Aug-10
11.2
18.6
29.6
40.7
53.6
15.1
21.6
36.5
52.2
66.9
Sep-10
11.5
17.6
26.7
38.2
53.0
14.3
22.4
37.3
51.5
67.2
Oct-10
8.2
14.1
26.1
39.0
55.0
12.3
19.7
34.1
48.7
67.2
Nov-10
18.7
25.3
36.1
48.0
61.7
20.4
28.8
43.3
57.9
73.7
Dec-10
15.0
21.6
33.9
48.4
65.2
17.9
26.5
41.6
57.4
75.5
Jan-11
15.9
22.9
35.8
49.3
64.8
19.2
29.8
46.4
62.3
77.3
Feb-11
16.5
24.6
39.5
53.6
68.6
19.1
29.1
48.4
64.6
79.6
Mar-11
15.2
24.8
40.8
54.3
67.7
16.3
26.7
45.7
62.0
77.8
Apr-11
22.5
27.9
39.9
52.2
67.0
17.4
25.6
42.5
57.6
73.2
May-11
14.1
22.0
35.9
50.9
66.3
18.3
27.6
45.0
60.8
76.9
Jun-11
13.9
23.2
37.4
51.1
66.2
15.6
25.3
43.5
59.2
75.7
Jul-11
20.3
28.3
41.9
55.3
71.3
13.3
21.9
39.5
55.9
73.6
Aug-11
14.8
23.0
37.6
51.7
66.8
16.4
27.2
46.0
62.1
78.2
Sep-11
16.1
24.3
40.9
56.0
70.5
18.5
28.2
46.9
63.3
79.5
Oct-11
17.1
26.5
42.9
57.3
72.2
20.0
31.4
50.5
65.6
81.1
Nov-11
17.5
25.6
39.7
54.2
69.7
20.4
31.6
49.4
65.4
81.2
Dec-11
19.6
32.4
48.7
62.7
75.5
21.6
33.3
51.6
67.6
83.0
Jan-12
14.9
25.0
40.8
55.4
69.6
17.9
29.4
47.7
64.5
80.6
Feb-12
14.7
22.9
36.9
51.3
67.1
17.9
28.0
45.5
62.1
78.5
Mar-12
13.9
22.5
38.8
52.2
67.9
15.7
25.8
45.7
62.6
78.9
Apr-12
17.1
25.1
40.2
53.4
68.2
19.0
28.2
46.7
62.6
78.7
May-12
17.7
26.0
41.9
54.2
69.3
19.3
29.7
48.1
65.3
81.2
Jun-12
24.3
32.4
46.4
58.0
71.7
19.5
28.9
47.2
64.8
81.0
Jul-12
12.9
20.6
34.3
47.3
62.4
17.0
26.6
45.0
61.1
77.3
Aug-12
15.8
23.3
37.7
50.7
66.2
19.3
30.1
46.7
62.2
78.4
Sep-12
14.6
22.1
36.3
48.8
63.4
17.8
28.5
47.9
64.1
79.3
Oct-12
16.7
25.0
38.5
50.2
63.4
17.9
28.4
45.9
61.6
77.6
Nov-12
18.1
24.8
39.4
51.8
65.5
19.7
28.3
45.5
61.5
77.6
Dec-12
13.3
20.3
34.5
47.8
62.2
13.5
22.5
42.0
58.4
75.3
Jan-13
11.5
18.8
33.3
47.1
61.8
14.5
24.8
43.8
60.4
78.4
Feb-13
13.5
21.3
37.1
51.6
66.9
14.0
24.3
45.3
64.2
82.1
Mar-13
14.3
23.4
39.4
54.0
68.8
15.8
27.2
48.9
66.1
82.9
Apr-13
16.2
25.4
41.3
53.9
68.1
18.8
30.3
51.4
68.8
84.0
May-13
20.6
29.5
45.8
59.1
73.2
15.5
26.6
46.5
64.4
81.7
Jun-13
18.1
26.9
44.5
59.3
74.0
16.7
28.5
50.5
67.8
84.5
Jul-13
16.1
26.4
44.9
59.2
74.5
16.4
29.0
51.7
69.8
86.0
Aug-13
19.2
29.0
46.9
62.4
77.7
17.7
30.7
52.7
72.8
88.6
Sep-13
17.0
27.0
46.0
62.3
76.9
19.5
32.1
54.4
73.3
88.0
Oct-13
14.5
23.5
41.2
56.9
71.5
17.6
29.1
50.4
69.2
84.5
Nov-13
16.1
23.9
39.5
54.3
70.5
14.6
25.9
45.9
64.2
82.4
Dec-13
14.4
21.5
37.1
51.5
67.0
13.9
23.7
43.9
61.8
79.3
Jan-14
16.5
24.7
40.7
54.3
68.7
15.5
25.5
45.9
64.0
81.1
Feb-14
14.8
23.0
36.8
50.5
65.9
14.2
24.4
45.1
63.9
80.6
Mar-14
24.3
31.5
44.7
56.7
68.9
16.4
27.1
46.2
63.2
80.1
Apr-14
13.5
20.8
35.8
50.6
65.7
12.5
21.9
40.6
59.3
77.4
May-14
20.8
27.2
40.7
54.1
67.8
12.5
20.7
39.6
58.3
76.8
Jun-14
11.5
17.7
30.6
43.9
59.4
10.5
19.1
36.7
53.9
73.2
Jul-14
12.4
21.0
35.0
47.8
62.1
10.4
17.8
35.6
55.0
74.3
Aug-14
11.0
17.0
29.5
41.7
56.5
11.4
19.9
35.4
53.8
73.5
Sep-14
12.7
19.4
31.2
43.6
57.9
10.3
17.5
32.1
48.5
68.4
Oct-14
15.1
22.6
35.2
47.0
61.6
13.8
21.9
38.2
54.8
74.9
Nov-14
18.5
24.0
34.5
44.9
58.7
11.7
18.6
34.0
50.5
70.1
Dec-14
11.9
18.3
30.2
42.4
57.6
14.1
21.3
35.6
51.5
71.3
Jan-15
14.6
19.9
31.5
44.7
59.8
11.9
20.2
34.9
50.8
70.5
Feb-15
15.2
21.5
34.6
48.7
63.9
11.9
20.7
38.0
54.4
73.9
Mar-15
16.5
23.5
36.9
49.7
64.1
11.8
20.6
37.9
53.9
73.5
Apr-15
16.7
23.0
36.6
50.0
64.4
18.5
27.7
44.2
58.6
75.1
May-15
16.4
23.2
37.4
51.5
66.9
12.5
21.9
41.5
58.6
77.5
Jun-15
14.7
22.8
37.9
51.5
67.6
13.2
23.0
39.9
56.4
75.5
Jul-15
11.7
17.5
29.2
41.2
55.4
10.9
19.4
34.5
49.3
67.9
Aug-15
9.9
16.1
28.7
41.8
58.4
11.0
19.4
36.2
53.2
71.8
Sep-15
13.5
21.1
37.4
51.8
68.3
12.5
21.9
39.8
57.6
77.0
Oct-15
12.9
18.8
31.5
44.2
59.1
13.1
21.8
38.2
53.8
72.1
Nov-15
12.6
18.9
31.9
44.8
58.7
13.6
23.1
40.7
55.2
73.3
Dec-15
11.2
17.8
30.9
42.6
56.4
11.2
19.5
35.8
50.5
68.7
Jan-16
18.7
25.9
39.3
50.1
62.7
14.3
24.1
41.3
56.0
72.4
Feb-16
16.3
24.8
41.6
56.3
69.9
14.3
24.5
43.8
60.6
78.7
Mar-16
18.9
26.4
40.7
53.9
67.9
12.9
23.1
41.8
59.9
76.6
Apr-16
16.9
24.9
39.3
52.4
66.1
13.9
24.3
40.6
57.2
74.5
May-16
15.6
22.4
36.4
50.5
65.4
13.1
22.1
38.4
55.5
74.6
Jun-16
12.3
18.2
30.7
44.1
59.7
12.9
21.1
36.7
52.2
69.5
Jul-16
9.4
15.0
26.9
41.0
58.0
9.8
17.5
33.3
49.3
67.7
Aug-16
9.5
14.8
26.6
40.6
58.1
11.8
19.4
34.1
49.4
69.0
Sep-16
11.8
18.2
31.2
43.7
58.9
12.2
19.9
33.7
48.9
67.9
Oct-16
10.5
16.1
27.3
39.1
53.7
10.2
17.4
30.3
44.9
64.3
Nov-16
13.2
20.8
34.7
47.5
61.5
11.4
19.9
37.4
54.1
72.4
Dec-16
14.9
21.2
33.5
46.3
61.0
11.0
20.3
36.6
52.3
70.4
Jan-17
15.1
20.9
32.7
44.5
59.5
10.8
18.7
34.6
49.9
68.3
Feb-17
17.2
22.5
34.3
45.7
59.2
13.3
21.3
37.1
52.1
70.0
Mar-17
63.0
67.1
73.7
79.3
85.1
10.5
17.9
34.1
49.5
67.4
Apr-17
12.8
18.7
30.6
42.7
56.6
13.9
24.3
40.6
57.2
74.5
May-17
12.0
18.3
30.5
43.5
59.7
10.1
17.2
32.2
48.0
67.3
Jun-17
23.3
29.8
40.0
50.4
63.5
10.2
17.4
32.7
48.1
66.8
Jul-17
14.0
20.5
32.0
44.3
59.6
11.2
18.5
33.3
48.1
66.5
Aug-17
13.8
19.4
31.6
44.8
60.7
11.8
18.4
33.5
48.6
67.6
Sep-17
10.9
17.3
27.8
40.3
55.9
9.4
15.6
30.5
45.3
63.0
Oct-17
10.3
15.1
25.4
36.8
51.5
11.5
18.9
31.7
46.1
63.0
Nov-17
25.5
29.7
38.2
47.6
59.4
8.7
15.5
29.0
43.6
60.9
Dec-17
13.6
19.6
31.2
42.6
55.6
8.6
14.7
28.5
42.3
60.0
Jan-18
10.8
15.8
26.5
37.3
51.8
8.4
14.8
28.1
41.7
60.2
Feb-18
11.4
18.5
31.3
43.7
58.3
11.0
19.1
34.4
49.1
67.4
Mar-18
15.2
22.2
34.5
47.1
61.3
11.7
19.5
34.8
51.1
69.5
Apr-18
12.3
17.7
29.5
41.9
57.4
11.1
18.7
33.7
48.4
66.0
May-18
16.0
22.2
34.2
47.4
63.2
10.7
17.7
33.5
50.7
69.3
Jun-18
14.4
21.3
34.9
48.7
64.1
11.9
19.8
35.6
51.9
69.7
Jul-18
11.2
17.9
31.3
45.4
62.7
11.8
19.8
36.1
53.3
71.6
Aug-18
9.8
16.4
30.0
43.5
59.0
11.8
19.3
34.7
50.1
68.7
Sep-18
12.6
20.3
33.6
48.4
63.7
14.5
23.5
40.9
56.6
73.8
Oct-18
13.9
23.0
38.8
53.6
69.4
15.7
26.3
44.3
59.5
77.3
Nov-18
14.1
22.8
39.1
52.9
69.3
14.0
23.7
41.3
57.7
76.1
Dec-18
13.0
20.8
36.4
50.5
66.5
13.9
23.0
39.7
56.2
75.5
If one were to look at the data of distribution on the NSE, then the trend has not really changed substantially over the last 10 years with most of the ratios almost remaining constant. However, the concentration in top stocks is a lot more in NSE compared to the BSE and that could be attributed to the fact that there are substantially larger number of shares listed on the BSE as compared to the NSE.
Here is a list of the top turnover stocks and the table shows the concentration of volumes in the top 10, top 50 and top 100 stocks. The BSE and the NSE have both been considered.
Month
BSE
NSE
5
10
25
50
100
5
10
25
50
100
Apr-10
10.9
16.9
28.4
40.3
55.0
14.5
24.4
41.0
55.5
70.3
May-10
14.1
23.4
38.4
50.8
64.1
16.6
26.8
47.7
63.3
77.9
Jun-10
11.4
19.6
36.0
49.7
63.5
13.8
23.5
43.9
61.7
76.1
Jul-10
8.6
14.9
27.8
40.3
54.5
11.9
20.2
38.7
55.9
70.3
Aug-10
11.2
18.6
29.6
40.7
53.6
15.1
21.6
36.5
52.2
66.9
Sep-10
11.5
17.6
26.7
38.2
53.0
14.3
22.4
37.3
51.5
67.2
Oct-10
8.2
14.1
26.1
39.0
55.0
12.3
19.7
34.1
48.7
67.2
Nov-10
18.7
25.3
36.1
48.0
61.7
20.4
28.8
43.3
57.9
73.7
Dec-10
15.0
21.6
33.9
48.4
65.2
17.9
26.5
41.6
57.4
75.5
Jan-11
15.9
22.9
35.8
49.3
64.8
19.2
29.8
46.4
62.3
77.3
Feb-11
16.5
24.6
39.5
53.6
68.6
19.1
29.1
48.4
64.6
79.6
Mar-11
15.2
24.8
40.8
54.3
67.7
16.3
26.7
45.7
62.0
77.8
Apr-11
22.5
27.9
39.9
52.2
67.0
17.4
25.6
42.5
57.6
73.2
May-11
14.1
22.0
35.9
50.9
66.3
18.3
27.6
45.0
60.8
76.9
Jun-11
13.9
23.2
37.4
51.1
66.2
15.6
25.3
43.5
59.2
75.7
Jul-11
20.3
28.3
41.9
55.3
71.3
13.3
21.9
39.5
55.9
73.6
Aug-11
14.8
23.0
37.6
51.7
66.8
16.4
27.2
46.0
62.1
78.2
Sep-11
16.1
24.3
40.9
56.0
70.5
18.5
28.2
46.9
63.3
79.5
Oct-11
17.1
26.5
42.9
57.3
72.2
20.0
31.4
50.5
65.6
81.1
Nov-11
17.5
25.6
39.7
54.2
69.7
20.4
31.6
49.4
65.4
81.2
Dec-11
19.6
32.4
48.7
62.7
75.5
21.6
33.3
51.6
67.6
83.0
Jan-12
14.9
25.0
40.8
55.4
69.6
17.9
29.4
47.7
64.5
80.6
Feb-12
14.7
22.9
36.9
51.3
67.1
17.9
28.0
45.5
62.1
78.5
Mar-12
13.9
22.5
38.8
52.2
67.9
15.7
25.8
45.7
62.6
78.9
Apr-12
17.1
25.1
40.2
53.4
68.2
19.0
28.2
46.7
62.6
78.7
May-12
17.7
26.0
41.9
54.2
69.3
19.3
29.7
48.1
65.3
81.2
Jun-12
24.3
32.4
46.4
58.0
71.7
19.5
28.9
47.2
64.8
81.0
Jul-12
12.9
20.6
34.3
47.3
62.4
17.0
26.6
45.0
61.1
77.3
Aug-12
15.8
23.3
37.7
50.7
66.2
19.3
30.1
46.7
62.2
78.4
Sep-12
14.6
22.1
36.3
48.8
63.4
17.8
28.5
47.9
64.1
79.3
Oct-12
16.7
25.0
38.5
50.2
63.4
17.9
28.4
45.9
61.6
77.6
Nov-12
18.1
24.8
39.4
51.8
65.5
19.7
28.3
45.5
61.5
77.6
Dec-12
13.3
20.3
34.5
47.8
62.2
13.5
22.5
42.0
58.4
75.3
Jan-13
11.5
18.8
33.3
47.1
61.8
14.5
24.8
43.8
60.4
78.4
Feb-13
13.5
21.3
37.1
51.6
66.9
14.0
24.3
45.3
64.2
82.1
Mar-13
14.3
23.4
39.4
54.0
68.8
15.8
27.2
48.9
66.1
82.9
Apr-13
16.2
25.4
41.3
53.9
68.1
18.8
30.3
51.4
68.8
84.0
May-13
20.6
29.5
45.8
59.1
73.2
15.5
26.6
46.5
64.4
81.7
Jun-13
18.1
26.9
44.5
59.3
74.0
16.7
28.5
50.5
67.8
84.5
Jul-13
16.1
26.4
44.9
59.2
74.5
16.4
29.0
51.7
69.8
86.0
Aug-13
19.2
29.0
46.9
62.4
77.7
17.7
30.7
52.7
72.8
88.6
Sep-13
17.0
27.0
46.0
62.3
76.9
19.5
32.1
54.4
73.3
88.0
Oct-13
14.5
23.5
41.2
56.9
71.5
17.6
29.1
50.4
69.2
84.5
Nov-13
16.1
23.9
39.5
54.3
70.5
14.6
25.9
45.9
64.2
82.4
Dec-13
14.4
21.5
37.1
51.5
67.0
13.9
23.7
43.9
61.8
79.3
Jan-14
16.5
24.7
40.7
54.3
68.7
15.5
25.5
45.9
64.0
81.1
Feb-14
14.8
23.0
36.8
50.5
65.9
14.2
24.4
45.1
63.9
80.6
Mar-14
24.3
31.5
44.7
56.7
68.9
16.4
27.1
46.2
63.2
80.1
Apr-14
13.5
20.8
35.8
50.6
65.7
12.5
21.9
40.6
59.3
77.4
May-14
20.8
27.2
40.7
54.1
67.8
12.5
20.7
39.6
58.3
76.8
Jun-14
11.5
17.7
30.6
43.9
59.4
10.5
19.1
36.7
53.9
73.2
Jul-14
12.4
21.0
35.0
47.8
62.1
10.4
17.8
35.6
55.0
74.3
Aug-14
11.0
17.0
29.5
41.7
56.5
11.4
19.9
35.4
53.8
73.5
Sep-14
12.7
19.4
31.2
43.6
57.9
10.3
17.5
32.1
48.5
68.4
Oct-14
15.1
22.6
35.2
47.0
61.6
13.8
21.9
38.2
54.8
74.9
Nov-14
18.5
24.0
34.5
44.9
58.7
11.7
18.6
34.0
50.5
70.1
Dec-14
11.9
18.3
30.2
42.4
57.6
14.1
21.3
35.6
51.5
71.3
Jan-15
14.6
19.9
31.5
44.7
59.8
11.9
20.2
34.9
50.8
70.5
Feb-15
15.2
21.5
34.6
48.7
63.9
11.9
20.7
38.0
54.4
73.9
Mar-15
16.5
23.5
36.9
49.7
64.1
11.8
20.6
37.9
53.9
73.5
Apr-15
16.7
23.0
36.6
50.0
64.4
18.5
27.7
44.2
58.6
75.1
May-15
16.4
23.2
37.4
51.5
66.9
12.5
21.9
41.5
58.6
77.5
Jun-15
14.7
22.8
37.9
51.5
67.6
13.2
23.0
39.9
56.4
75.5
Jul-15
11.7
17.5
29.2
41.2
55.4
10.9
19.4
34.5
49.3
67.9
Aug-15
9.9
16.1
28.7
41.8
58.4
11.0
19.4
36.2
53.2
71.8
Sep-15
13.5
21.1
37.4
51.8
68.3
12.5
21.9
39.8
57.6
77.0
Oct-15
12.9
18.8
31.5
44.2
59.1
13.1
21.8
38.2
53.8
72.1
Nov-15
12.6
18.9
31.9
44.8
58.7
13.6
23.1
40.7
55.2
73.3
Dec-15
11.2
17.8
30.9
42.6
56.4
11.2
19.5
35.8
50.5
68.7
Jan-16
18.7
25.9
39.3
50.1
62.7
14.3
24.1
41.3
56.0
72.4
Feb-16
16.3
24.8
41.6
56.3
69.9
14.3
24.5
43.8
60.6
78.7
Mar-16
18.9
26.4
40.7
53.9
67.9
12.9
23.1
41.8
59.9
76.6
Apr-16
16.9
24.9
39.3
52.4
66.1
13.9
24.3
40.6
57.2
74.5
May-16
15.6
22.4
36.4
50.5
65.4
13.1
22.1
38.4
55.5
74.6
Jun-16
12.3
18.2
30.7
44.1
59.7
12.9
21.1
36.7
52.2
69.5
Jul-16
9.4
15.0
26.9
41.0
58.0
9.8
17.5
33.3
49.3
67.7
Aug-16
9.5
14.8
26.6
40.6
58.1
11.8
19.4
34.1
49.4
69.0
Sep-16
11.8
18.2
31.2
43.7
58.9
12.2
19.9
33.7
48.9
67.9
Oct-16
10.5
16.1
27.3
39.1
53.7
10.2
17.4
30.3
44.9
64.3
Nov-16
13.2
20.8
34.7
47.5
61.5
11.4
19.9
37.4
54.1
72.4
Dec-16
14.9
21.2
33.5
46.3
61.0
11.0
20.3
36.6
52.3
70.4
Jan-17
15.1
20.9
32.7
44.5
59.5
10.8
18.7
34.6
49.9
68.3
Feb-17
17.2
22.5
34.3
45.7
59.2
13.3
21.3
37.1
52.1
70.0
Mar-17
63.0
67.1
73.7
79.3
85.1
10.5
17.9
34.1
49.5
67.4
Apr-17
12.8
18.7
30.6
42.7
56.6
13.9
24.3
40.6
57.2
74.5
May-17
12.0
18.3
30.5
43.5
59.7
10.1
17.2
32.2
48.0
67.3
Jun-17
23.3
29.8
40.0
50.4
63.5
10.2
17.4
32.7
48.1
66.8
Jul-17
14.0
20.5
32.0
44.3
59.6
11.2
18.5
33.3
48.1
66.5
Aug-17
13.8
19.4
31.6
44.8
60.7
11.8
18.4
33.5
48.6
67.6
Sep-17
10.9
17.3
27.8
40.3
55.9
9.4
15.6
30.5
45.3
63.0
Oct-17
10.3
15.1
25.4
36.8
51.5
11.5
18.9
31.7
46.1
63.0
Nov-17
25.5
29.7
38.2
47.6
59.4
8.7
15.5
29.0
43.6
60.9
Dec-17
13.6
19.6
31.2
42.6
55.6
8.6
14.7
28.5
42.3
60.0
Jan-18
10.8
15.8
26.5
37.3
51.8
8.4
14.8
28.1
41.7
60.2
Feb-18
11.4
18.5
31.3
43.7
58.3
11.0
19.1
34.4
49.1
67.4
Mar-18
15.2
22.2
34.5
47.1
61.3
11.7
19.5
34.8
51.1
69.5
Apr-18
12.3
17.7
29.5
41.9
57.4
11.1
18.7
33.7
48.4
66.0
May-18
16.0
22.2
34.2
47.4
63.2
10.7
17.7
33.5
50.7
69.3
Jun-18
14.4
21.3
34.9
48.7
64.1
11.9
19.8
35.6
51.9
69.7
Jul-18
11.2
17.9
31.3
45.4
62.7
11.8
19.8
36.1
53.3
71.6
Aug-18
9.8
16.4
30.0
43.5
59.0
11.8
19.3
34.7
50.1
68.7
Sep-18
12.6
20.3
33.6
48.4
63.7
14.5
23.5
40.9
56.6
73.8
Oct-18
13.9
23.0
38.8
53.6
69.4
15.7
26.3
44.3
59.5
77.3
Nov-18
14.1
22.8
39.1
52.9
69.3
14.0
23.7
41.3
57.7
76.1
Dec-18
13.0
20.8
36.4
50.5
66.5
13.9
23.0
39.7
56.2
75.5
If one were to look at the data of distribution on the NSE, then the trend has not really changed substantially over the last 10 years with most of the ratios almost remaining constant. However, the concentration in top stocks is a lot more in NSE compared to the BSE and that could be attributed to the fact that there are substantially larger number of shares listed on the BSE as compared to the NSE.