Did an investment banking internship at a medium-sized universal bank. All I did (I was there for 8 weeks) was work on pitch books (mainly updating, some creating my own slides) and tradingcomps (only updating). I also worked on some internal memo-type stuff (i.e. outlining prospective transactions for senior management to look at).
None of the pitching converted to a live deal, and none of the comps or memos were for a live deal. I did no financial modelling/valuation at all.
So, could you guys please tell me what can I write in my resume?