Cases can vary quite a bit. You may get profitability cases, market entry cases, growth strategy cases, process optimization cases, or many other topics.
Sometimes BCG also uses more unconventional cases that are not strictly business-related, so it is difficult to identify a single case type that dominates all interviews.
That said, if I had to pick one case type that is most commonly represented, it would be profitability cases.
These can take two main forms:
- Understanding why profitability has declined
- Identifying opportunities to improve profitability and increase margins
So while you should be comfortable with a broad range of case types, profitability cases are probably the safest area to prioritize if you're trying to maximize your preparation efficiency.
Best,
Franco