The last official top 20 was from April,
Top 20 owned approx. 87%...
Going through all of the:
Substantial holder Anns,
Other Announcements,
Sellers and Buyers lists,
etc,
It still seems like the top 20 ownership would be around the same...
I will try and post the actual links to articles and info later,
But have done a heck of a lot of research on this,
And will be repeating the same thing a bit...
Check out SDA on AdotFdotR,
pretty sure it has some of the info you want...