Ask probability questions mainly using Expected Values. Also asked to look at a spread, where you could buy or sell positions in two companies, or buy/sell the spread. Asked to make 6 trades to find arbitrage. Asked for what multiplier to put onto that trade. Mental maths questions where you are asked to get the exact answer, as well as others where you are given 5 seconds to approximate the answer. Would've been easy if I had done the options 101 trading course they have online. I didn't know what a multiplier was, and didn't feel confident responding.

Python interview, 3 leetcode mediums. Interview focused on linear data structures, no tree, graph, DP problems. Overall, not very hard. Was given 2 hours for the assessment. Had to be done in Python, so brush up on syntax if necessary.