Hey!
From my experience with case study interviews, M&A is definitely the most common format. However, a few other themes could be:
- Market expansion: e.g. entering a new country or launching a new product
- Restructuring / Insolvency: e.g. discussing cost-cutting and refinancing
- Regulatory Issues: especially in sectors such as technology and energy
- Litigation Risk: this will typically including looking at reputational, financial and commercial consequence
However, rather than trying to revise every possible topic, it might help to practise structuring your thinking around:
- What is the client trying to achieve?
- What are the risks?
- What are the potential options for the client?
- Which is the best option that you would recommend, and why?
I hope that assists!