@asb83 - This explains the huge jump in quarter 4, 2017: https://hotcopper.com.au/threads/q1-report-this-week.4135441/page-29?post_id=32488687#.WtRXvbZL3Uo
HotCopper Highlights, Week 31: Pilbara Minerals, BrainChip and 4DMedical spark fresh investor interest