At 87, this may just be estate planning.
Perhaps he got, or is getting, out of some positions (now that he no longer has the US Gov’t in his pocket), and has a lot of profits to avoid paying taxes on this year.
He might also be shielding assets, in case he gets prosecuted or sued (now that he no longer has the US Gov’t in his pocket).
More ominously, he might be preparing for a really big influence campaign of some sort - maybe the 2018 elections.
Yes, like a well funded version of Recreate 68.