Application online, OA, screening call. did not make it past the screening call with HR rep so cannot speak to rest of process but first 3 were fairly straightforward and not too hard at all

The first stage was a take-home technical assessment containing a single programming question. While I was given almost 2 hours to solve the problem, I solved it in slightly under 30 minutes, and spent the rest of the time being paranoid about whether my answer was sensible. The second stage was a pleasant informal call with HR. The third stage was a video call with two quant trading analysts, who asked some simple probability and statistics questions. I fumbled and didn't get to proceed any further.