IMC Trading Superday / Virtual Onsite Interview

The IMC Trading Superday / Virtual Onsite interview is stage 7 of 7 in the IMC Trading interview process, after the Onsite Coding + Systems. Format: Onsite or virtual · ~5 rounds across the day. The culmination: often a combined trading-floor superday. ~5 rounds: rapid probability/quant-reasoning (~4 min each), brain teasers (~1 hr), a coding block (~1 hr), game-theory problems, Fermi/market-sizing estimation, and the recurring behavioral pair.

What the Superday / Virtual Onsite tests

Strong quantitative-product knowledge expected.

QuantVault maps 21 practice problems to this round. By topic, the biggest groups are game theory (5), coding (3), probability (3), brain teasers (2); by difficulty, 5 easy, 8 medium and 8 hard. 14 of them were reported by candidates who interviewed at IMC Trading, most recently in Jun 2026.

• The final round runs as stations: a trading simulator where you defend your earlier quotes, a quant station with senior traders, a behavioural interview, and informal time on a desk.

Who takes this round: Quant Trader, Quant Researcher candidates. See the full IMC Trading process and who takes each round.

How to prepare for the Superday / Virtual Onsite

• Pace the rapid-fire round. ~4 minutes per probability question — bank the ones you see instantly, flag the rest, and keep moving.
• Game theory shows up. Turn-taking / combinatorial games (newspaper delivery) reward finding the invariant or backward induction, not brute force.
• Fermi with a range. Market-sizing questions want a structured estimate plus a confidence interval, not a single guess.
• 'Why IMC / why trading' returns — be consistent with what you said in the HR screen.

Final-week checklist

• Coin-flip-edge / EV + bankroll intuition for the screen
• Numerical OA: probability, combinatorics, logic, information gain — fast
• SWE OA classics: Avoiding-the-Monsters (BFS + binary search), O(1) data-structure design
• Trader round: P&L tracking, Bayesian updating, bankroll discipline
• Systems depth (TLB, signals, C++ internals) for the engineering onsite

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 IMC Trading Superday / Virtual Onsite practice set; across them the most common sub-topics are expected value, conditional probability, discrete probability, data structures, graph algorithms, Bayes' theorem. The questions themselves, with worked solutions, are in the round practice.

Prepare with QuantVault

The same round at similar firms

Compare with similar firms