3 rounds, 1st in person other 2 online. An hour each. Mainly financial maths and probability brain teasers. In financial maths, mostly questions on stochastic calculus. Usually for the brain teasers you have to work your way up so you start by simplifying the problem and then build up upon the complexity.

Applied with an MSc and was invited to take the behavioural test - it took about 20 minutes, most of the questions seemed quite obvious after reading their qualities on their website.