The process took 1 week. I interviewed at Capital One (Arlington, VA) in Feb 2012
Interview
Intense - first we had an on campus information session and then were asked to fill out a 2 hour assessment - think 75% GMAT style questions and 25% personality assessment. That's the first round. The second round is a case study style interview only this one has a correct answer (you're supposed to come up with an actual number and explain what it is). I didn't make it past the second round, but after that you go on site for a third round interview.
Interview questions [1]
Question 1
How do you calculate (x) ratio - a lot of ratio questions
Three rounds of interviews, two of them are case based to assess technical knowledge (first case is relatively easy, calculation needed), one is mainly behavioural questions with the team leader
1st round was 45 mins. Simple case (profitability and basic business acumen) plus a bit of behavioural
2nd round was in-person; networking dinner the night before, and then two back to back interviews (an hour long case and a 30 min behavioural)
Interview questions [1]
Question 1
For the case it was breakeven calculations and basic business questions (e.g. what are the risks and mitigations associated with this venture...)
Do case study questions. If you got an interview invitation, you will receive case studies examples, and they will ask similar questions during interview. After this, will have about 15 minutes behavioral questions. Why capital one? Introduce yourself...