Susquehanna International Group, Llp (Sig) Quantitative Analyst Interview Guide

We’ve seen a very consistent pattern in SIG’s Quantitative Analyst interviews: the firm cares less about polished storytelling and more about whether you can set up probability cleanly under pressure. Across candidate reports, the same themes keep resurfacing — Bayes, expected value, conditional probability, combinatorics, and brainteasers that look simple until the clock starts running. Multiple candidates noted that the hardest part was not the math itself, but the pace, with several saying they couldn’t finish every question even when the material felt familiar. That tells us SIG is screening for fast, accurate reasoning, not just raw quantitative background.

A second theme is that SIG wants evidence you understand the business context, not just the formulas. Candidates were asked why SIG, what makes its prop trading model distinctive, and even market-scenario questions that forced them to think like traders rather than pure academics. We also saw a few prompts that mixed finance intuition with math, like options, stock-pitch discussions, and questions about how markets react to events. The non-obvious signal here is that they seem to reward candidates who can move fluidly between abstract probability and practical trading logic.

Finally, our candidates report a fairly technical, sometimes stiff style of interaction. That means small mistakes matter: rushed arithmetic, vague explanations, or hand-wavy reasoning can hurt more than in a warmer process. The strongest candidates were the ones who answered crisply, stayed organized, and showed they had actually thought about SIG’s edge. In other words, speed plus precision is the real bar here, and the people who clear it usually sound effortless doing it.