Quant Interview Practice Questions

500+ quant interview questions for Jane Street, Citadel, Two Sigma, DE Shaw, and other top quantitative finance firms.

Quant Developer Questions (90)

C++ and Python coding challenges for quant developer interviews

  • Binary Header Cast - easy memory_optimization question
  • Compacting Memory Allocator - very_hard memory_optimization question
  • Placement New in Buffer - easy memory_optimization question
  • Weak Pointer Cache - medium memory_optimization question
  • Custom STL Allocator - medium memory_optimization question
  • Flyweight Symbol Pool - hard memory_optimization question
  • Stack-Allocated Fixed Array - easy memory_optimization question
  • Reference-Counted Object Pool - hard memory_optimization question
  • Shared Pointer Basics - easy memory_optimization question
  • Memory-Mapped File Allocator - medium memory_optimization question
  • Chained PMR Resources - hard memory_optimization question
  • Cross-Venue Arbitrage Detector - very_hard architecture & logic question
  • FX Currency Converter - medium architecture & logic question
  • Order State Machine - easy architecture & logic question
  • Leaky Bucket Rate Limiter - medium architecture & logic question
  • Position Netting Engine - medium architecture & logic question
  • Smart Order Router - hard architecture & logic question
  • Full Order Book Reconstruction - hard architecture & logic question
  • Exchange Fee Model - medium architecture & logic question
  • Binary Protocol Codec - medium architecture & logic question
  • TWAP Order Scheduler - medium architecture & logic question
  • Full Price-Time Matching Engine - very_hard architecture & logic question
  • Basic PnL Calculator - easy architecture & logic question
  • FIX Message Builder - medium architecture & logic question
  • Tick-to-Trade Latency Measurer - hard architecture & logic question
  • Circuit Breaker for Exchange Gateway - hard architecture & logic question
  • Order Book Snapshot Builder - medium architecture & logic question
  • VWAP Calculator - easy architecture & logic question
  • FIX Session State Machine - hard architecture & logic question
  • Drop Copy Trade Reconciler - hard architecture & logic question
  • FIX Checksum Validator - easy architecture & logic question
  • Multi-Leg Order Builder - hard architecture & logic question
  • Iceberg Order Slicer - medium architecture & logic question
  • Cancel-Replace Order Logic - medium architecture & logic question
  • Sliding Window Rate Limiter - medium architecture & logic question
  • Implied Price Crossing Engine - hard architecture & logic question
  • Event-Driven Strategy Backtester - very_hard architecture & logic question
  • Bid-Ask Spread Calculator - medium architecture & logic question
  • POV Execution Algorithm - medium architecture & logic question
  • Strongly Typed Order Side - easy architecture & logic question
  • Pre-Trade Risk Limit Checker - medium architecture & logic question
  • Epoch-Based Memory Reclamation - hard concurrency question
  • Barrier Phase Synchronization - medium concurrency question
  • Atomic Flag Spin-Wait - easy concurrency question
  • Shared Mutex for Read-Heavy Data - medium concurrency question
  • Once-Flag Singleton Init - medium concurrency question
  • Atomic Shared Pointer Config - medium concurrency question
  • Flat Combining Order Book - very_hard concurrency question
  • Cooperative Queue Cancellation - easy concurrency question
  • Counting Semaphore Throttle - medium concurrency question
  • Fixed Thread Pool Executor - medium concurrency question
  • Work-Stealing Deque - hard concurrency question
  • Scoped Lock Portfolio Update - easy concurrency question
  • Atomic Fetch-Add Statistics - medium concurrency question
  • Try-Lock Spinlock with Timeout - medium concurrency question
  • Bounded Producer-Consumer Queue - medium concurrency question
  • Double-Buffer Atomic Swap - hard concurrency question
  • Lock-Free MPSC Queue - hard concurrency question
  • Hazard Pointer Reclamation - hard concurrency question
  • Condition Variable Event Queue - easy concurrency question
  • Wait-Free SPSC Queue - very_hard concurrency question
  • Atomic Price Publisher - easy concurrency question
  • Latch-Based Service Startup - medium concurrency question
  • Left-Right Concurrency Pattern - very_hard concurrency question
  • Future/Promise Async Pricing - medium concurrency question
  • Userfaultfd Lazy Page Loading - hard systems question
  • Timestamped Console Logger - easy systems question
  • Custom Page Table Allocator - very_hard systems question
  • Structured Syslog Logger - medium systems question
  • Daemon Process Setup - medium systems question
  • Process CPU Usage Monitor - easy systems question
  • eBPF Market Data Packet Filter - very_hard systems question
  • File Descriptor RAII Wrapper - easy systems question
  • Stack Size Configuration - medium systems question
  • io_uring Async Network Stack - very_hard systems question
  • EventFD & Circular Buffer Simulation - medium systems question
  • Environment Config Loader - easy systems question
  • Simulated io_uring Batch Reader - hard systems question
  • Timer FD Periodic Scheduler - medium systems question
  • Cgroup Memory Limit Enforcer - hard systems question
  • C++20 Coroutine Async Reader - medium systems question
  • Hot-Reload Risk Configuration - medium systems question
  • Memory-Mapped Tick Data Reader - medium systems question
  • Pipe-Based IPC Order Relay - medium systems question
  • Seccomp Sandbox for Strategy - hard systems question
  • Hardware Counters with Perf Events - hard systems question
  • Shared Memory Config Store - medium systems question
  • Process Memory Statistics - medium systems question
  • Coroutine Price Generator - medium systems question
  • Graceful Shutdown Handler - easy systems question

Quant Researcher Questions (10)

Statistical analysis and quantitative modeling problems

  • Liquidity Hole Simulation - hard backtesting question
  • Calculate Sortino Ratio - medium backtesting question
  • Calculate Calmar Ratio - easy backtesting question
  • Maximum Drawdown Calculation - easy backtesting question
  • Vectorized Backtest Engine - medium backtesting question
  • Trade Classification (Lee-Ready) - hard market_microstructure question
  • Order Book Imbalance Alpha - medium market_microstructure question
  • Slippage & Transaction Cost Modeling - medium market_microstructure question
  • Almgren-Chriss Optimal Execution - hard market_microstructure question
  • POV Execution with Market Impact - hard market_microstructure question

Quant Trader Questions (50)

Trading MCQs, probability brainteasers, and market scenarios

  • Expected Value of Perfect Information - hard Conditional Expected Value question
  • Zipf Distribution in Order Flow - hard Market Microstructure question
  • One-Step Binomial Model: Risk-Neutral Probability - medium Options & Greeks question
  • Curse of Dimensionality in Finance - medium Data Science question
  • Markov Chain Steady State - hard Probability & Statistics question
  • Dark Pool Midpoint Fill - medium Market Microstructure question
  • Contango and Roll Yield - easy Finance question
  • Drunkard's Walk - hard Probability & Statistics question
  • Order Book Data Structure - medium Number Theory & Algorithms question
  • Portfolio Aggregate Delta Calculation - medium Options & Greeks question
  • Entropy of a Fair Die - medium Probability & Statistics question
  • S&P 500 Backtest Bias - medium Regression Analysis question
  • Lévy Flight Trader - hard Probability & Statistics question
  • Conditional Independence and Marginal Independence - medium Conditional Probability question
  • False Discovery Rate Control - hard Regression Analysis question
  • Covariance Calculation - easy Probability & Statistics question
  • Jensen's Inequality and Log Returns - medium Probability & Statistics question
  • Poisson Arrival Probability - easy Probability & Statistics question
  • Volatility Drag Calculation - medium Finance question
  • Memory-Mapped Tick Data - medium Networking & Systems question
  • Jumbo Frames and Throughput - easy Networking & Systems question
  • TCP Congestion Control Impact - medium Networking & Systems question
  • Kernel Ring Buffer Performance - hard Networking & Systems question
  • NUMA-Aware Memory Allocation - hard Networking & Systems question
  • Spin Lock vs Mutex - medium Networking & Systems question
  • Context Switching and Thread Pinning - medium Networking & Systems question
  • MESI Protocol and False Sharing - hard Networking & Systems question
  • Zero-Copy Latency Impact - hard Networking & Systems question
  • Nagle's Algorithm Latency Impact - medium Networking & Systems question
  • PTP vs NTP Precision - medium Networking & Systems question
  • FPGA vs CPU Order Processing - medium Networking & Systems question
  • Multicast vs. Unicast Market Data - medium Networking & Systems question
  • DPDK Latency Reduction - hard Networking & Systems question
  • TCP vs UDP for Market Data - easy Networking & Systems question
  • Swaption Pricing Model - hard Algorithms & Data Structures question
  • Cross-Currency Swap Features - hard Financial Instruments question
  • TIPS Principal Adjustment - medium Algorithms & Data Structures question
  • Callable Bond Convexity - hard Algorithms & Data Structures question
  • Convertible Bond Embedded Option - hard Algorithms & Data Structures question
  • Repo Rate and Financing - medium Algorithms & Data Structures question
  • Immunization with Duration Matching - medium Algorithms & Data Structures question
  • Bootstrapping a Yield Curve - hard Algorithms & Data Structures question
  • Z-Spread vs OAS on Callable Bonds - hard Algorithms & Data Structures question
  • Credit Default Swap Trigger Event - medium Algorithms & Data Structures question
  • OIS-SOFR Spread Interpretation - medium Algorithms & Data Structures question
  • Swap Rate vs. Par Rate - medium Algorithms & Data Structures question
  • Key Rate Duration vs. Effective Duration - hard Algorithms & Data Structures question
  • DV01 Calculation - medium Algorithms & Data Structures question
  • Bond Price Change Approximation - medium Algorithms & Data Structures question
  • Decimal Precision in Trading - easy Code Analysis question

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MyntBit Trader 50

Brainteasers, probability puzzles, and market concept MCQs for trading interviews.

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