Portfolio Valuation applicants have rated the interview process at Kroll with 3 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 63.5% positive. This is according to Glassdoor user ratings.
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The interview process was pretty simple. There were about twelve question hirevue interview, then a super day in person. Know the basic concepts and formulas of DCF and WACC. I you know those two, you should be set.