Hi there,
Feel free to PM you - I have a folder of financial services cases I can provide you as part of coaching.
Additionally, the case library on Preplounge gives you the ability to filter on Finance-related topics! I suggest you search on Mergers & Acquisition, Restructuring, and Valuation. In the search bar, you can also search for things like "Bank", "Investment", etc.
https://www.preplounge.com/en/management-consulting-cases