Glassdoor users rated their interview experience at Cornerstone Research as 50% positive with a difficulty rating score of 3.5 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Summer Analyst and Analyst rated their interviews as the hardest, whereas interviews for Summer Analyst and Analyst roles were rated as the easiest.
I interviewed at Cornerstone Research (San Francisco, CA)
Interview
First round is 2 back to back interview rounds with two different Cornerstone analysts/associates in the office you indicated. Pretty standard Econ consulting cases, not too difficult. Cases are adapted from Also some basic behavioral questions about yourself, interest in the field, research experience, etc.
Interview questions [1]
Question 1
Describe to me your research experience (with some specific questions about my research experience on my resume).
I interviewed at Cornerstone Research (New York, NY)
Interview
The first interview was via Zoom, and the second (final) interview was on-site. The first interview consisted of two sessions with different associates. Each session lasted about 30 minutes. The second interview had the same format but just had more sessions throughout the day. I was asked how to go about defending clients' cases given some descriptions of the cases.
I interviewed at Cornerstone Research (Washington, DC)
Interview
First round 2 cases: Only cases questions.
Final round is onsite with 4 cases: They seem only care about cases, others are just fairly easy small talk. One securities, one valuation