strong opening, page-3

Great opening and upward movement in SP. Can anyone explain to me why so many of the sales are in parcels ending in 447 or 553 shares? Is is bot buying or some other process? It just looks very "unreal' to me.

10:41:31 AM 0.053 38,553 2,043.31
10:40:11 AM 0.053 211,447 11,206.69
10:40:11 AM 0.053 300,000 15,900.00
10:40:11 AM 0.053 300,000 15,900.00
10:40:11 AM 0.051 88,553 4,516.20 XT
10:32:36 AM 0.051 111,447 5,683.80 XT
10:32:36 AM 0.051 13,553 691.20
10:30:05 AM 0.050 50,000 2,500.00
10:25:26 AM 0.051 86,447 4,408.80
10:25:26 AM 0.050 13,553 677.65 XT
10:25:20 AM 0.050 286,447 14,322.35
10:23:53 AM 0.050 13,553 677.65
10:23:39 AM 0.050 40,000 2,000.00 XT
10:23:39 AM 0.050 46,447 2,322.35
10:23:33 AM 0.050 53,553 2,677.65
10:23:33 AM 0.050 16,447 822.35 XT
10:23:22 AM 0.050 3,553