AQR Capital Management Interview ProcessTier 4

Q: What is the AQR Capital Management interview process?

AQR: research/engineering-heavy, no trading/market-making games. SWE/Quant-Dev: coding OA ('classic 3'), CS-fundamentals phone, PnL-calculator take-home, on-machine Task-Scheduler onsite. Quant Research: statistics everywhere (OLS/regression, pandas/statsmodels), finance theory. Long (1-2 months); visa/green-card friction common. The loop runs 6 stages: Online Assessment (SWE), Phone Screen (CS Fundamentals), PnL-Calculator Take-Home, On-Machine Onsite (SWE), QR Technical Rounds, QR Superday.

Q: How many rounds does AQR Capital Management have?

6 stages in total, starting with the Online Assessment (SWE) and ending with the QR Superday.

Q: How do I prepare for the AQR Capital Management interview?

Work the stage notes above, then drill the AQR Capital Management interview-questions set and the AQR Capital Management online-assessment practice — each problem has a full worked solution.

Quantitative Hedge Fund · Greenwich, CT

55 practice questions → Apply at AQR Capital Management → Learn more about AQR Capital Management ↗ Report a question from your AQR Capital Management interview

problems

18 easy 37 medium 4 hard

hires: Software / Quant Developer, Quant Researcher, Risk Researcher

Online Assessment (SWE)

AQR is a systematic factor fund, not a high-frequency shop, so its assessment rewards clean analytical reasoning and statistics over speed games. The screen comes in two flavors: a CodeSignal / HackerRank coding OA (75 to 90 min, 3 problems drawn from a rotating bank), or a recruiter-sent take-home pairing a short algorithms document with a math document of about 8 GRE-level MCQs (geometry, counting, probability, algebra, no calculus). The pipeline is OA or take-home, then a CS-fundamentals / design phone, then an onsite or superday; the QR and PhD track adds research and statistics depth in every round.

Practice this round 11 problems Pro

Quant / QR take-home

current

2023 -> 2026

Math screenrecruiter take-home, MCQ, no calculator~8 to 12 MCQ

One recruiter-sent variant pairs an algorithms document with a math document of about 8 GRE-level multiple-choice questions plus 2 bonus. The math is high-school / GRE level (geometry, counting, probability, algebra) with NO calculus; the reported hurdle is careful English reading, not the math itself. Take the timed screen below.

Take the timed assessmentReal reported OA questions, on the clockPro

Quant / SDE

current

2022 -> 2026

CodeSignal/HackerRank (3 problems, rotating bank)CodeSignal / HackerRank11 problems

The screening OA is 3 problems from a rotating ~20-problem bank (islands/union-find, sparse-table range queries - the TLE trap, bounded knapsack, DP, string transforms). The recurring problems below are auto-graded.

Range Queries for Max(d[i] - d[j]) with i <= j (the TLE trap)Think of

d

as a price series and the window as a trading horizon: you want the biggest peak-to-trough drop where the peak happens no later than the CodingMediumSolve →Cake Thief (Bounded Knapsack)The bounded cap is the whole difficulty: with unlimited supply you'd greedily pack the best value-per-weight type, but a finite quantity forces a knapCodingMediumSolve →Split at Digit Boundaries and Sort Each RunSplit at Digit Boundaries and Sort Each RunCodingMediumSolve →Counting Friend CirclesReported in this firm OA; auto-graded.CodingMediumSolve →see all 11 problems →

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56 firmsEvery stageMust-do problems

Phone Screen (CS Fundamentals)

~1 hr · engineer / hiring manager Round guide →

Often resume + behavioral + CS/OOP concepts (encapsulation, polymorphism, SOLID, list vs set, sorting complexity, SQL indexes, many-to-many modeling) with frequently NO live coding, though sometimes a single maze / shortest-path link.

Practice this round →

#974 Implement Quicksortseen 2018-06 coding medium #2421 Fast Exponentiation in Logarithmic Timeseen 2017-07 coding medium #2422 Sorting a Million Integers in a Tiny Rangeseen 2016-04 coding easy #960 Fast Exponentiation by Squaring coding easy

PnL-Calculator Take-Home

~1 week · design project Round guide →

The signature take-home: design and build a PnL calculator that parses two message files and computes P&L for long/short positions. Graded on object-oriented design, structure, code style, and comments, not just correctness.

Practice this round →

Editorial round — no practice problems.

On-Machine Onsite (SWE)

2–3 hr project + 3–4 × 45-min rounds Round guide →

A morning on-machine project, a Task Scheduler (Course-Schedule-II variant with per-task time windows + durations → topological sort + heap) reviewed by an engineer, then algorithm + behavioral rounds: binary search on a continuous range (find x for monotonic y=f(x)), tree paths summing to a target that may bend, a fixed-size O(1) insert/delete container, and standard graph/DP.

Practice this round 33 problems →

#2441 Task Scheduler With Dependencies and Earliest-Start Timesseen 2019-11 coding hard #1787 Palindrome Pairsseen 2018-06 coding hard #1151 K Smallest Pair Sums from Two Sorted Arraysseen 2019-10 coding medium #1148 Inorder Successor in a Binary Search Treeseen 2019-11 coding medium #2439 Range Queries for the Maximum Min-to-Max Profitseen 2019-07 coding hard #2440 Inverting a Monotone Function on the Unit Intervalseen 2018-09 coding easy #569 Counting Friend Circlesseen 2019-11 coding medium #1600 LRU Cache coding medium

QR Technical Rounds

2 back-to-back · ~1 hr each Round guide →

Heavy statistical inference plus hands-on pandas/statsmodels, then a deep dive on your own research. OLS assumptions and what breaks them, deriving β, writing a covariance function, outlier analysis, and return-skewness reasoning (is this series reversed? markets skew negative, single names positive).

Practice this round 11 problems →

#1866 OLS Assumptions, Violations, and Diagnosticsseen 2018-11 regression medium #2436 Detecting the Time Direction of a Return Seriesseen 2020-07 time-series medium #1457 Omitted Variable Bias in OLS regression medium #1840 Deriving the OLS Estimator regression medium #916 Covariance of X and Y-Squared in Bivariate Normal expectation medium #2065 Ridge Regression Bias-Variance Tradeoff regression hard #1469 Positive Semi-Definite Covariance Matrix linear-algebra easy #1445 Minimum-Variance Portfolio with Two Uncorrelated Assets optimization medium

QR Superday

4 × 45-min (sometimes written exams + stress interview) Round guide →

A flown-out superday covering statistical inference, finance (fixed income + other asset classes), ML, your projects, and behavioral, sometimes with three written exams (finance / math / programming), six 30-min 1:1s, and a deliberate stress interview. Whiteboard coding is light (e.g. write a covariance function); DS&A is mostly conceptual.

Practice this round 20 problems →

#2436 Detecting the Time Direction of a Return Seriesseen 2020-07 time-series medium #1866 OLS Assumptions, Violations, and Diagnosticsseen 2018-11 regression medium #916 Covariance of X and Y-Squared in Bivariate Normal expectation medium #1457 Omitted Variable Bias in OLS regression medium #2065 Ridge Regression Bias-Variance Tradeoff regression hard #1490 SVD and Best Low-Rank Approximation linear-algebra medium #2437 Computing Value-at-Risk for an Option Positionseen 2019-03 options-pricing medium #2438 Constructing a Cross-Sectional Momentum Portfolio in FXseen 2019-03 finance medium

The day before

OA classic 3: fast exponentiation, counting sort, digit-boundary split-sort
CS fundamentals: OOP/SOLID, SQL indexes, complexity trade-offs
PnL-calculator take-home: clean OOD + documented assumptions
On-machine onsite: Task Scheduler (toposort + heap), binary-search-on-range
QR: OLS assumptions + derive β + pandas/statsmodels every round
QR finance: CAPM/Sharpe/VaR/duration + ML fundamentals

Cheatsheet →

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Practice every firm's OA: timed replicas, free game replicas and guides in one place →

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AQR Capital Management round-by-round guides

AQR Capital Management interview guide: the firm, culture, roles and pay →

Stage guides for every firm: superdays · behavioral questions · market-making games

AQR Capital Management interview — FAQ

What is the AQR Capital Management interview process?

AQR: research/engineering-heavy, no trading/market-making games. SWE/Quant-Dev: coding OA ('classic 3'), CS-fundamentals phone, PnL-calculator take-home, on-machine Task-Scheduler onsite. Quant Research: statistics everywhere (OLS/regression, pandas/statsmodels), finance theory. Long (1-2 months); visa/green-card friction common. The loop runs 6 stages: Online Assessment (SWE), Phone Screen (CS Fundamentals), PnL-Calculator Take-Home, On-Machine Onsite (SWE), QR Technical Rounds, QR Superday.

How many rounds does AQR Capital Management have?

6 stages in total, starting with the Online Assessment (SWE) and ending with the QR Superday.

How do I prepare for the AQR Capital Management interview?

Work the stage notes above, then drill the AQR Capital Management interview-questions set and the AQR Capital Management online-assessment practice — each problem has a full worked solution.