Vanguard is one of the best imo at reading the tea leaves and most likely got it right on $ROX so my guess is they either added or remained the same leaning towards added.
So with Vanguard at 4 mil,isn, Blackrock just shy of 4 mil,ish and Hartline right around 3 mil,ish the 3 own around 1/8 or 9th of what the insiders own. Sound right?