Cornerstone Research Business Analyst interview experience

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Positive

United StatesPosted Nov 2019 · Candidate report, summarized by Dataford

I went through a harder-feeling Cornerstone loop that leaned more technical and multi-part, with an interview day format that moved quickly between case reasoning and brief check-ins over roughly a few weeks.

First round (on campus) — two back-to-back 30-minute interviews; each included a short behavioral/intro moment followed by a fairly technical economic case requiring strong intuition.
Final round / super day (on-site) — a longer day with multiple 20–40 minute sessions; several were case interviews, and only a smaller portion was behavioral.
Case variety and depth — cases could be economic/valuation or legal-adjacent fact patterns (including due-diligence-style thinking) and in some versions were tied to topics like antitrust.
Difficulty/pace — some interviewers

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