OA was harder than the actual interview although they were quite rigorous than I thought. Definitely need to prepare before hand or else it would be easy to get screwed. No quick math more proof based questions.

Very easy, mostly technical and fit questions were expected. 1st round was CV round. Then there was a 6 question OA which consisted of math/stats questions. Then 1-1 technical interview, where they asked more math/stat questions, and sometimes even market making questions.