A long murky process... I first interviewed with them in early June of 2019. A week later I received a case study due in 3 days. The case study is a research/writing assignment similar to what you would be doing on the job.
Once submitted, I never heard back from them. I sent a follow-up email every 2 weeks. I reached out to my original interviewer, to other analysts via LinkedIn, and even to the CEO himself... alas nothing. A "thank you, but you've been rejected" email would be nice.
I WOULD BE HIGHLY CAUTIOUS when applying and submitting your "intellectual property" (your case study results). I have noticed since my June application that they remove and repost the job listing every two weeks (with lots of applicants each time). It may be that they're trying to find the right candidate or that they're stealing our intellect all under the guise of their "interviewing" process.