Looks like Mercer stepping down because of ties to white nationalists:

[Mrs. Overall]

Hedge Fund Billionaire Robert Mercer Will Step Down From His Company Following BuzzFeed News Exposé

Mercer, whose money helped elect Donald Trump, will also sell his stake in Breitbart News to his daughters after a BuzzFeed News report linked the site to white nationalists.

Robert Mercer, the hedge fund billionaire who has come under media scrutiny for his role in helping elect Donald Trump, announced today he would step down from his role as co-CEO of Renaissance Technologies. The decision, announced in a memo to Renaissance employees, followed a BuzzFeed News exposé revealing the connections of Breitbart News — partially owned by Mercer — to white nationalists and neo-Nazis.

Sources familiar with Renaissance informed BuzzFeed News in recent days of significant anger within the company about the report, which revealed that former Breitbart News tech editor Milo Yiannopoulos had cultivated white nationalists and used them to generate ideas and help edit stories on the site.

Mercer's statement specifically denounces Yiannopoulos and states that "I was mistaken to have supported him, and for several weeks have been in the process of severing all ties with him." He also announced his intention to sell his stake in Breitbart News to his daughters.

Mercer was a major funder of Donald Trump's presidential effort.

Renaissance is one of the world's most successful hedge funds and manages more than $50 billion.

Read his memo: https://www.buzzfeed.com/josephbernstein/hedge-fund-billionaire-robert-mercer-steps-down-from-his?utm_term=.fc6V0OjOb#.bgML5xbxQ

[C_U_L8R]

1. So he gives the Nazi portfolio to his daughter?

I think there's more to this

[Mrs. Overall]

2. Me, too.

[Cartoonist]

3. He couldn't find any other buyers?

He also announced his intention to sell his stake in Breitbart News to his daughters.

.
And how does keeping it in the family become a denouncement?

[ret5hd]

4. Uhhhh...uhhhmmm...selling it to his daughters?

"I want it daddy!!! I'll take it!!!"

[gratuitous]

5. Uh, sure, white supremacists; whatever you say, Bobby

I wonder if he's going to head off for a little R & R in some foreign locale that just coincidentally doesn't have an extradition agreement with the United States?

[SoCalMusicLover]

6. So Which Is More Honorable?

Is he stepping down because he's about to be indicted, or because his fund is associated with white supremacists?

[Mrs. Overall]

9. Both, perhaps?

[Roland99]

7. White nationalist ties are news *now*??

Something else is up

[Tommy_Carcetti]

8. I'm surprised he'd give Buzzfeed that type of satisfaction.

Unless he's stepping down for some other reason....cough cough Mueller Cambridge Analytica cough cough.

[malaise]

10. Is Mercer about to be indicted?

That is the question

[Mrs. Overall]

11. Bingo!

[Homeoutside]

12. I think it's...

Blackout Bingo!

[comradebillyboy]

13. Wow

[Johnny2X2X]

14. Pathetic

Hey, I, Um, er, had no idea I was in bed with Neo Nazis, sure, well, I'll distance myself from these Neo Nazis right away, by, um, er, selling my interest in the Neo Nazis to my daughters...

What a joke. We have actual Nazis running our country right now, not pretend Nazis, not people whose policies are Nazi like, but actual White Supremacist, Aryan Superiority believing, real live Nazis. People who believe in Eugenics.

[wildeyed]

15. He's going to 'sell' his stake to a family member and pretend quit his job.

Translation: business as usual