Pros
Salary is OK (not great). They used to be more competitive, but DTCC is under pressure from the participants to cut costs, and RIFs twice a year seem to have become the norm.
Cons
No or very little mobility between teams. Management is creating budgets that start in the red, so if the industry does not have an abnormally good year, RIFs will be necessary. Benefits are lagging, particularly health insurance. No sick days (they are rolled into your PTO), so people tend to go to work even when they are sick. Little chance to learn new technologies, if you are not in a group lucky enough to have something new. No 360 evaluations (we used to have those 5+ years ago), which means that your manager is never accountable to you. No or very little training (other than mandatory ones due to financial regulations) as a way of saving costs. Promotions, type of work, and raises depend much more on being part of a click of employees that came from another company than on actual ability.