Old Mission Capital ETF, Options & Market-Making Round Interview

What the round is, what Old Mission Capital asks, and how to prepare, from candidate reports and the QuantVault practice set.

Stage 3 of 445-60 min18 practice problemsUpdated October 20, 2026

The Old Mission Capital ETF, Options & Market-Making Round interview is stage 3 of 4 in the Old Mission Capital interview process, after the Probability & Mental Math. Format: 45-60 min - trading intuition. For trading roles: an ETF fair-value or creation/redemption question, a put-call parity check, options pricing intuition, and a live market where the interviewer trades against you and you re-quote.

Preparing for this round? Practice the 18 questions mapped to the Old Mission Capital ETF, Options & Market-Making Round, with worked solutions. A free account saves your progress.

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What the ETF, Options & Market-Making Round tests

Kelly sizing and game-theory-flavored decision problems also come up.

QuantVault maps 18 practice problems to this round. By topic, the biggest groups are finance (7), optimization (4), stochastic processes (4), game theory (1); by difficulty, 4 easy, 14 medium and 0 hard. 18 of them were reported by candidates who interviewed at Old Mission Capital, most recently in Jul 2026.

Expect an ETF fair-value or creation and redemption question, a put-call parity check, and a live market where the interviewer trades against you and you re-quote.

How to prepare for the ETF, Options & Market-Making Round

Price simple options and reason about risk qualitatively.
Market-making intuition -- quote, get filled, update.
Kelly / bet sizing under uncertainty.

Further reading: Market-making game interview guide · How quant superdays work · Behavioral questions at trading firms.

Question types in this round

The 5 largest question types in the Old Mission Capital ETF, Options & Market-Making Round practice set; across them the most common sub-topics are expected value, portfolio theory, first-passage and stopping times, kelly criterion, Markov chains, convex optimization. The questions themselves, with worked solutions, are in the round practice.

Prepare with QuantVault

PracticePractice the ETF, Options & Market-Making Round round18 mapped problems, 5 free Interview funnelAll 4 Old Mission Capital roundsThe full funnel, a practice set for each stage Firm guideOld Mission Capital interview guideEvery round, tracks, timeline, pay and a prep plan Free OA sampleOld Mission Capital Quant Trader OA2 questions, 3 min, no signup Problem setOld Mission Capital interview questionsEvery question tagged to this firm Related problemsFinance interview questionsWorked solutions CourseMarkets field guide course1 lesson GameMake a Market gameQuote two-sided markets against flow GameProbability betting gameBet sizing under uncertainty Next roundOnsiteFinal rounds - the toughest reported problems

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Frequently asked questions

What is the Old Mission Capital ETF, Options & Market-Making Round interview?

It is stage 3 of 4 in the Old Mission Capital interview process, after the Probability & Mental Math. Format: 45-60 min - trading intuition. For trading roles: an ETF fair-value or creation/redemption question, a put-call parity check, options pricing intuition, and a live market where the interviewer trades against you and you re-quote. Kelly sizing and game-theory-flavored decision problems also come up.

How long is the Old Mission Capital ETF, Options & Market-Making Round interview?

Candidates report: 45-60 min - trading intuition.

What questions come up in the Old Mission Capital ETF, Options & Market-Making Round interview?

The practice set QuantVault maps to this round centers on finance, optimization, stochastic processes.

How should I prepare for the Old Mission Capital ETF, Options & Market-Making Round interview?

Price simple options and reason about risk qualitatively. Market-making intuition -- quote, get filled, update.

What comes after the ETF, Options & Market-Making Round?

The Onsite (stage 4 of 4). Format: Final rounds - the toughest reported problems.

Practice the Old Mission Capital ETF, Options & Market-Making Round round

Work the 18 mapped practice problems with progress tracking, then move to the next stage of the Old Mission Capital funnel.

Practice the ETF, Options & Market-Making Round round Create a free account Old Mission Capital interview guide Old Mission Capital online assessment All 4 rounds