Pitched a stock buy, company down 15% same day

If you are an entry level- then it will not matter much because what they are trying to assess is how you came to your thesis. They do not care if you are right or wrong- even the best analyst get their calls wrong from time to time.

Yeah agree with this. It really doesn't matter what the outcome is, the PM is ultimately going to be interested in gauging how your process works. Timing is unfortunate, but if they don't move you forward it probably is unrelated to the pitch.

This is a great lesson in whether you want to be in the buy side or not at all. Your entire career can be governed by unforeseeable circumstances. If you think it sux to have your stock go down 15% at an interview, imagine how much it sux when your PM is already holding the stock in the company portfolio.

However, as far as the interview goes. I don't think there is much you can do from here. Hopefully, the interviewer will evaluate the strength of your argumentation anyway. Look at it this way, a bunch of other well-informed investors also held your viewpoint. That's exactly why it fell 15% at the guidance miss.

A PM that's been on the Street for any length of time knows that this doesn't make you an idiot for picking the stock. Nor would you be a genius if it had jumped up 15% instead.