Ann: Becoming a substantial holder, page-4

Another interesting titbit is that Athos are using HSBC nominees.
HSBC nominees have also seen a large increase in total holding for STX since the start of the year.
It wouldn't surprise me if Athos already have a large holding of STX, too, held on someone else's behalf.
for example, between February and August this year, HSBC nominees went from holding 4.1% to 8.2% of STX stock, a much larger change than any of the other nominee holdings.