The Group One Trading Interview Process

Group One Trading's options market making business, now inside Susquehanna, still runs its own trader interview built on Greeks and speed.

Group One Trading evaluates trading candidates through a mental math and probability screen, an interview covering options theory and market-making judgment, and a final round assessing decision-making under live or simulated conditions. Founded in Chicago in 1996 and acquired by Susquehanna International Group in 2014, Group One Trading continues to operate as an options market maker with its own recruiting process, even though it now sits inside a larger organization.

Group One Trading makes markets in listed equity and index options, historically holding designated market maker roles on major options exchanges that carry both the obligation and the advantage of continuously quoting specific option classes. That structure means the firm's edge has long rested on efficient, accurate pricing across assigned products rather than opportunistic trading across the whole market.

Since joining Susquehanna, Group One's traders have access to a larger firm's capital and infrastructure, but the day-to-day work, quoting options and managing the resulting Greeks, remains close to what it was as an independent firm.

Candidates typically begin with an online application and a timed test of mental arithmetic and probability, consistent with the broader Susquehanna hiring process for trading roles. A first interview usually covers options fundamentals, including how a market maker prices and hedges a position as the underlying and implied volatility move.

Later rounds commonly include a trading simulation or case study exercise and a final conversation with senior traders focused on judgment and composure under pressure. Because Group One now recruits partly through Susquehanna's broader channels, some candidates encounter shared early-stage assessments before being routed to interviews specific to the options market-making desk.