Prep by Firm

Flow Traders interview prep: train the exact formats

The purest speed screen in the industry: a rapid-fire arithmetic test plus a dedicated sequences test, then brainteaser rounds and an ETF case study. The math is easy; six seconds per question is not. Every one of those formats has a matching drill here, free, in your browser.

Open the Flow Traders training plan Try the arithmetic sprint first

What the Flow Traders process tests

A timed arithmetic screen on integers, decimals and fractions (versions reported as 80 questions in 8 minutes or 60 in 6), scored +1 / −1, pass around 60 percent.
A separate sequences test: number patterns and logical progressions on a clock.
Technical rounds: brainteasers and quick market scenarios computed live.
A final case study on ETFs: pricing, hedging and communicating a decision.
An HR round on motivation and your grasp of the ETF market-making business.

Warm up on the real thing

Six-second pace: 36 × 0.75

27. Three quarters of 36. Reading 0.75, 0.25, 0.125 as fractions instead of multiplying digits is most of the speed on their decimal questions.

Sequences test: 4, 9, 19, 39, ?

79. Each term is double the previous plus one. Differences (5, 10, 20) double, which is the tell for a 2x + c rule. Their sequence section mixes arithmetic, geometric and affine rules like this one.

Case-study intuition: an ETF trades at 101.20 while its basket is worth 101.00. Creating a unit at value costs 0.05 in fees. What do you do?

Sell the ETF, buy the basket, create to deliver: 0.15 locked in. Sell at 101.20, buy the underlying for 101.00, pay 0.05 to create the share you owe, keep 101.20 − 101.00 − 0.05. Creation-redemption arbitrage is the core mechanic their ETF case study builds on.

A ready-made training plan

The app's Prep by Firm desk has a Flow Traders card that maps each stage of their process onto the right drill and launches it in one click: the 80-in-8 sprint (at a harsher −2 penalty than their −1, so the real test feels forgiving), a timed number-sequences run, a timed set focused on decimals, fractions and percentages, a probability study set on expected value and market intuition, the market-making arena, and a full timed interview simulation. Your best scores are tracked per format so you can see where the bar still is.

Start the Flow Traders plan free

Prep for other firms

Optiver prep80-in-8, Beat the Odds, sequences, market making Jane Street prepProbability out loud, market making, estimation IMC prepOA formats: arithmetic, sequences, trading games Citadel Securities prepEV, Bayes, market-making scenarios at speed Five Rings prepEstimation with bounds, probability, game theory DRW prepProbability OA, brainteasers, trading simulation SIG prepEV games, poker-style decisions, options basics Akuna Capital prep80-in-8, sequences, probability, derivatives Maven Securities prepFast numerical screen, cards, market making Da Vinci prepHard numerical quiz, volatility, card games

Explore the rest of the desk

Mental MathZen, timed and sprint drills across 11 categories Probability Lab285 interview questions with worked solutions Market Maker ArenaQuote two-sided markets against informed flow Interview SimA timed, three-part mock with a debrief

Based on public interview reports and candidate accounts; formats change, so verify the current process with your recruiter. My Quant Journey is independent: not affiliated with, sponsored by or endorsed by Flow Traders.