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60+ Morgan Stanley questions

Morgan Stanley interview questions and how to prepare

The questions candidates report from Morgan Stanley interviews, sorted by how often they come up, with difficulty and topics, plus original practice written in Morgan Stanley's interview style.

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ZorixOS tracks 60 community-reported Morgan Stanley interview questions, drawn from an open-source dataset of real interview reports and sorted by how frequently each one comes up. Every question links to its source. Alongside them are 78 original ZorixOS practice questions written in Morgan Stanley's known interview style (not claimed as asked at Morgan Stanley), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Morgan Stanley.

Updated July 2026

Morgan Stanley interview questions candidates report

Community-reported from real Morgan Stanley interviews (open-source dataset), most-asked first. Showing 60. Each links to its source.

  1. Best Time to Buy and Sell Stock
    ArrayDynamic Programming
    Easy100% asked
  2. Delete and Earn
    ArrayHash TableDynamic Programming
    Medium100% asked
  3. Best Team With No Conflicts
    ArrayDynamic ProgrammingSorting
    Medium96% asked
  4. Find Subarrays With Equal Sum
    ArrayHash Table
    Easy92% asked
  5. Find the Longest Valid Obstacle Course at Each Position
    ArrayBinary SearchBinary Indexed Tree
    Hard92% asked
  6. Find The Original Array of Prefix Xor
    ArrayBit Manipulation
    Medium92% asked
  7. Minimum Cost to Move Chips to The Same Position
    ArrayMathGreedy
    Easy92% asked
  8. Minimum Number of Lines to Cover Points
    ArrayHash TableMathDynamic Programming
    Medium92% asked
  9. The Employee That Worked on the Longest Task
    Array
    Easy92% asked
  10. Two Sum
    ArrayHash Table
    Easy86% asked
  11. Count Subarrays With Fixed Bounds
    ArrayQueueSliding WindowMonotonic Queue
    Hard81% asked
  12. Longest Substring Without Repeating Characters
    Hash TableStringSliding Window
    Medium81% asked
  13. Shuffle the Array
    Array
    Easy78% asked
  14. Merge Intervals
    ArraySorting
    Medium73% asked
  15. Remove Nth Node From End of List
    Linked ListTwo Pointers
    Medium73% asked
  16. Reorder List
    Linked ListTwo PointersStackRecursion
    Medium73% asked
  17. First Unique Character in a String
    Hash TableStringQueueCounting
    Easy71% asked
  18. LRU Cache
    Hash TableLinked ListDesignDoubly-Linked List
    Medium69% asked
  19. Palindrome Number
    Math
    Easy69% asked
  20. Copy List with Random Pointer
    Hash TableLinked List
    Medium64% asked
  21. Group Anagrams
    ArrayHash TableStringSorting
    Medium64% asked
  22. Kth Largest Element in an Array
    ArrayDivide and ConquerSortingHeap (Priority Queue)
    Medium64% asked
  23. Make K-Subarray Sums Equal
    ArrayMathGreedySorting
    Medium64% asked
  24. Sort Colors
    ArrayTwo PointersSorting
    Medium64% asked
  25. Stamping The Sequence
    StringStackGreedyQueue
    Hard64% asked
  26. Daily Temperatures
    ArrayStackMonotonic Stack
    Medium62% asked
  27. Jump Game
    ArrayDynamic ProgrammingGreedy
    Medium62% asked
  28. Remove Duplicates from Sorted Array
    ArrayTwo Pointers
    Easy62% asked
  29. Spiral Matrix
    ArrayMatrixSimulation
    Medium62% asked
  30. 3Sum
    ArrayTwo PointersSorting
    Medium55% asked
  31. Candy
    ArrayGreedy
    Hard55% asked
  32. Coin Change II
    ArrayDynamic Programming
    Medium55% asked
  33. Contiguous Array
    ArrayHash TablePrefix Sum
    Medium55% asked
  34. Generate Parentheses
    StringDynamic ProgrammingBacktracking
    Medium55% asked
  35. Kth Missing Positive Number
    ArrayBinary Search
    Easy55% asked
  36. Least Number of Unique Integers after K Removals
    ArrayHash TableGreedySorting
    Medium55% asked
  37. Longest Common Subsequence
    StringDynamic Programming
    Medium55% asked
  38. Longest Palindromic Substring
    Two PointersStringDynamic Programming
    Medium55% asked
  39. Majority Element
    ArrayHash TableDivide and ConquerSorting
    Easy55% asked
  40. Maximum Subarray
    ArrayDivide and ConquerDynamic Programming
    Medium55% asked
  41. Meeting Rooms II
    ArrayTwo PointersGreedySorting
    Medium55% asked
  42. Minimum Number of Taps to Open to Water a Garden
    ArrayDynamic ProgrammingGreedy
    Hard55% asked
  43. Minimum Operations to Reduce X to Zero
    ArrayHash TableBinary SearchSliding Window
    Medium55% asked
  44. Minimum Substring Partition of Equal Character Frequency
    Hash TableStringDynamic ProgrammingCounting
    Medium55% asked
  45. Minimum Suffix Flips
    StringGreedy
    Medium55% asked
  46. Next Greater Element I
    ArrayHash TableStackMonotonic Stack
    Easy55% asked
  47. Next Greater Element II
    ArrayStackMonotonic Stack
    Medium55% asked
  48. Next Greater Element III
    MathTwo PointersString
    Medium55% asked
  49. Palindrome Linked List
    Linked ListTwo PointersStackRecursion
    Easy55% asked
  50. Remove All Adjacent Duplicates in String II
    StringStack
    Medium55% asked
  51. Subarrays with K Different Integers
    ArrayHash TableSliding WindowCounting
    Hard55% asked
  52. Sum of Subarray Minimums
    ArrayDynamic ProgrammingStackMonotonic Stack
    Medium55% asked
  53. Word Search
    ArrayStringBacktrackingDepth-First Search
    Medium55% asked
  54. Coin Change
    ArrayDynamic ProgrammingBreadth-First Search
    Medium51% asked
  55. Container With Most Water
    ArrayTwo PointersGreedy
    Medium51% asked
  56. Count of Range Sum
    ArrayBinary SearchDivide and ConquerBinary Indexed Tree
    Hard51% asked
  57. Longest Consecutive Sequence
    ArrayHash TableUnion-Find
    Medium51% asked
  58. Longest Increasing Subsequence
    ArrayBinary SearchDynamic Programming
    Medium51% asked
  59. Maximum Product Subarray
    ArrayDynamic Programming
    Medium51% asked
  60. Top K Frequent Elements
    ArrayHash TableDivide and ConquerSorting
    Medium51% asked

Practice questions in Morgan Stanley's style

Original ZorixOS questions written the way Morgan Stanley interviews, so you rehearse the real format. Not claimed as asked at Morgan Stanley.

  1. Imagine you are tasked with improving the latency of client trades executed through Morgan Stanley's trading platform. Describe a system design approach to identify and resolve bottlenecks, considering the real-time nature of market data and order flow. How would you ensure high availability and fault tolerance during market volatility?

    Software EngineerSystem Design, High-Frequency TradingTests: Evaluates the candidate's ability to design scalable, resilient systems for high-throughput, low-latency financial applications and their understanding of trading infrastructure.

  2. A client reports intermittent failures when placing complex options trades via our web application. Walk me through your debugging process, starting from the user's report to identifying the root cause. What tools and techniques would you use to trace the request through our microservices architecture, and how would you prioritize fixing issues that impact critical trading functions?

    Software EngineerDebugging, MicroservicesTests: Assesses problem-solving skills, systematic debugging methodology, and understanding of distributed systems in a production environment.

  3. Morgan Stanley's internal data pipeline processes terabytes of market data daily. Design a data ingestion and processing system that can handle variable data volumes and ensure data integrity for downstream analytics and trading algorithms. Consider challenges like data schema evolution and backfilling historical data.

    Software EngineerData Engineering, System DesignTests: Tests understanding of large-scale data processing, distributed systems, and data quality management relevant to financial data.

  4. We are considering building a new feature for our Wealth Management platform that allows clients to automatically rebalance their portfolios based on predefined risk profiles. Outline the software architecture for this feature. What are the key components, their interactions, and the technologies you might consider, keeping in mind security and regulatory compliance?

    Software EngineerSystem Design, Wealth ManagementTests: Evaluates architectural thinking, technology choices, and awareness of financial services constraints like security and compliance.

  5. Write a SQL query to identify the top 5 institutional clients by trading volume in the equities market for the last quarter, excluding any trades executed below a certain price threshold. Then, explain the potential business implications of this metric.

    Data ScientistSQL, Financial MetricsTests: Measures SQL proficiency and the ability to extract meaningful business insights from data.

  6. Morgan Stanley is launching a new AI-powered research assistant for its financial advisors. Design an A/B test to measure the impact of this assistant on advisor productivity and client satisfaction. What key metrics would you track, and how would you define success?

    Data ScientistExperimentation, A/B TestingTests: Assesses understanding of experimental design, metric selection, and interpreting results to drive product decisions.

72+ more Morgan Stanley-style questions are in the free library, each practiceable live with adaptive follow-ups and an honest scorecard. Start free.

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Morgan Stanley Interview Questions (2026) | ZorixOS