It would be interesting if anyone knew a little bit more about the size of the book, type of strategy he ran (any industry preference for example), etc. inside of Citadel, but as the article says, he has been doing extremely well.
First big name spinning out on his own in 2019 as far as I've seen and looks like Ken Griffin will be putting some money into the firm as well. Will be interesting to see the size of his new fund and how many (if any) people he'll be able to take with him. I'll try to update this with additional information as I see it.
UPDATE - 1/18/2019 Citadel axed L/S portfolio manager Adam Wolfman and his team from Surveyor, which is also losing Jack Woodruff Link [BI Prime]
Haven't read the full article (don't have BI Prime), but assuming this is related to performance given Citadel is letting him go. Will continue to update as I see anything.
UPDATE - 3/7/2019 Citadel to close Aptigon stock unit, Felder leaves link [https://www.reuters.com/article/us-hedgefunds-cit…]
Citadel plans to shut down its Aptigon Capital equities unit two years after launch it. Additionally, the firm is parting ways with the unit's chief, Eric Felder.
I interviewed with the team and know quite a bit about them, but ultimately didn't finish the process as I didn't think culturally it was what I was looking for at that time.
He runs a consumer long/short book, the biggest equity book at Citadel. He has 3 PMs under him that will likely continue to run the fund (unless they go with him). Huge team (Jack, his sub-PMs, analysts, associates), I think maybe $3-4bn gross AUM. Really smart people working with him and his process is intense, so if they continue to carry that forward the team should be fine.