Hyper political environment, some of the worst aspects of the old Countrywide culture. If you aren't personally aligned with the right senior execs, you can get laid off in an instant. Very little loyalty, litany of carnage of VPs to EVPs who were screwed over but then given a pay off to sign non-disparagement agreements.
If you get an offer from them, ask for a guaranteed severance package. If they won't provide it, don't accept the offer.