The SIG Onsite / Superday interview is stage 6 of 7 in the SIG interview process, after the Market-Making Game + EV Games. Format: Onsite · multiple 1-hr rounds + dinner. The Super Day, usually at SIG's Bala Cynwyd office near Philadelphia: expected-value games and making markets, a group auction game against the other candidates, an HR interview of about 30 minutes, office and trading-floor tours, and often a dinner with a young trader.
Preparing for this round? Practice the 46 questions mapped to the SIG Onsite / Superday, with worked solutions. A free account saves your progress.
What the Onsite / Superday tests
Some older reports mention live poker; most sources describe poker as part of SIG's training culture rather than the interview.
QuantVault maps 46 practice problems to this round. By topic, the biggest groups are probability (18), expectation (8), combinatorics (7), game theory (5); by difficulty, 2 easy, 37 medium and 7 hard. 17 of them were reported by candidates who interviewed at SIG, most recently in Jan 2026.
Who takes this round: Trader / Quant Researcher candidates. See the full SIG process and who takes each round.
How to prepare for the Onsite / Superday
- Open-ended estimation wants assumptions and a range: state your model and give an interval, not a single number.
- If a poker-style game comes up, play it for expected value. Show bet-sizing discipline and explain each decision; most recent reports describe AKQ-style EV games rather than a live poker table.
- Pace yourself across a long day: eat the dinner, stay composed and keep narrating your reasoning.
Further reading: How quant superdays work · Behavioral questions at trading firms · Fermi estimation questions · Market-making game interview guide.
Question types in this round
The 5 largest question types in the SIG Onsite / Superday practice set; across them the most common sub-topics are discrete probability, expected value, conditional probability, symmetry, uniform distribution, independence. The questions themselves, with worked solutions, are in the round practice.
Probability18 in this round
Expectation8 in this round
Combinatorics7 in this round
Game Theory5 in this round
Brain Teasers4 in this round
Prepare with QuantVault
The same round at similar firms
Compare with similar firms
Frequently asked questions
What is the SIG Onsite / Superday interview?
It is stage 6 of 7 in the SIG interview process, after the Market-Making Game + EV Games. Format: Onsite · multiple 1-hr rounds + dinner. The Super Day, usually at SIG's Bala Cynwyd office near Philadelphia: expected-value games and making markets, a group auction game against the other candidates, an HR interview of about 30 minutes, office and trading-floor tours, and often a dinner with a young trader.
What questions come up in the SIG Onsite / Superday interview?
The practice set QuantVault maps to this round centers on probability, expectation, combinatorics.
How should I prepare for the SIG Onsite / Superday interview?
Open-ended estimation wants assumptions and a range: state your model and give an interval, not a single number. If a poker-style game comes up, play it for expected value. Show bet-sizing discipline and explain each decision; most recent reports describe AKQ-style EV games rather than a live poker table.
What comes after the Onsite / Superday?
The SWE / Quant-Dev Coding + Systems (stage 7 of 7). Format: Phone + onsite · C++ / algorithms / system design.
Practice the SIG Onsite / Superday round
Work the 46 mapped practice problems with progress tracking, then move to the next stage of the SIG funnel.