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Prep/Quant Trading and Research

Quant Trading and Research

750
questions
Start the Why trading set

New to this? Read the lessons first. 6 tracks, in the order to learn them.

Open Learn

Drill sets9 sets

  • All topics750 questionsMixedEvery topic in one set, shuffled, the way a real interview jumps from your story to a DCF to a market question.Sign in to save scoresStart this set
  • Behavioral128 questionsWhy tradingWhy quant, why this firm, how you handle losing, and the projects you will be asked to explain.Sign in to save scoresStart this set
  • Technicals106 questionsProbabilityDice, cards, coins, conditioning, and Bayes, worked out loud.Sign in to save scoresStart this set
  • Technicals130 questionsExpected value and gamesFair prices for games, optimal stopping, and when to take a bet.Sign in to save scoresStart this set
  • Technicals67 questionsMental mathFast arithmetic, fractions, percentages, and estimates under a clock.Sign in to save scoresStart this set
  • Modeling84 questionsStatisticsVariance, correlation, regression, distributions, and what goes wrong with real data.Sign in to save scoresStart this set
  • Modeling76 questionsCodingAlgorithms, complexity, and simulation questions asked of research and dev candidates.Sign in to save scoresStart this set
  • Markets89 questionsMarket making gamesMake a two sided market, update on information, size bets, and manage inventory.Sign in to save scoresStart this set
  • Technicals70 questionsBrainteasersLogic puzzles and estimation asked to watch you think.Sign in to save scoresStart this set

More ways to practice

  • Cases6 cases played step by step, with exhibits, the math, and a model answer. The first is free.→
  • Speed drills4 timed math drills, new problems every run.→
  • Voice mockAn interviewer asks out loud and you answer out loud.→
  • Timed interviewsA screen, a first round, and a superday on the clock, scored at the end.→
  • Modeling testsBuild the model in a sheet against the clock.→
  • Terms48 Quant Trading and Research terms, each with a worked example.→
  • Company sets24 firms, how each one interviews and what it asks.

How the interview runs6 stages

  1. 1ApplicationResume and transcript. Math, CS, physics, and competition results (olympiads, Putnam, ICPC, Kaggle) carry more weight than finance experience.
  2. 2Online assessmentTimed tests: 80 arithmetic problems in 8 minutes at some shops, probability and sequence puzzles, a coding test on HackerRank or CodeSignal for research and dev tracks, and sometimes a short market making game.
  3. 3Phone screenA trader or researcher on a shared screen. Probability and expected value questions asked one after another, with follow ups that change one assumption to see if you can adapt the answer.
  4. 4Technical roundsTwo or three 45 minute interviews. Harder probability, statistics, a coding problem for research roles, and a betting or market making game where they trade against you.
  5. 5Final roundA full day on site, often in Chicago or New York. Back to back technical interviews, a trading simulation or team game, and a fit conversation about why trading and how you handle losing.
  6. 6OfferOften within a week. Return offers from the internship are decided on how you think and learn on the desk, not on profit.
Read next9 outside sources
  • r/quant Wiki: Your Guide to Quant FinanceThe subreddit's FAQ on roles, degrees, books, and how quant hiring works.Reddit
  • Weekly Megathread: Education, Early Career and Hiring/Interview AdviceThe pinned weekly thread where undergrads ask about majors, internships, and interview prep.Reddit
  • The Massive List of Trading/Quant Questions - SIG, Jane Street, Citadel, GoldmanA long list of probability and brainteaser questions reported from quant trading interviews.WSO
  • Q&A: Undergraduate -> Quantitative Trading Decision Process (Advice)A student who recruited for quant trading explains how firms differ and how to choose between offers.WSO
→

What gets askedShare by topic

  • Probability and expected value35%
  • Mental math and estimation15%
  • Statistics and data15%
  • Market making and betting games15%
  • Coding and algorithms10%
  • Fit and why trading10%
  • A Practical Guide to Quantitative Finance Interviews (the green book)Xinfeng ZhouThe quant red book. Probability, brainteasers, and the problems that get reused every year.BookPaid
  • Heard on the StreetTimothy Falcon CrackOlder, broader, still asked. Good for the math and the stats chapters.BookPaid
  • Quant Job Interview Questions and AnswersMark Joshi, Denson, and DownesStochastic calculus and options questions for the sell side quant track.BookPaid
  • Mergers & Inquisitions: quant financeMergers & InquisitionsWhat trading, research, and dev roles actually do at the big shops.SiteFree
  • Wall Street Oasis forumsWall Street OasisWhich firms interviewed when, and what the coding round looked like.ForumFree