Citadel vs Morgan Stanley Interview Questions
Citadel lists 101 LeetCode interview questions while Morgan Stanley lists 60. They share 10 problems — 10% of Citadel's bank and 17% of Morgan Stanley's. Focus on the overlap first, then drill into 91 Citadel-only and 50 Morgan Stanley-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 10 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and Morgan Stanley.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Binary Tree Maximum Path Sum, Minimum Knight Moves and Morgan Stanley-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Citadel skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
10 Shared Questions
High-priority problems to practice for both Citadel and Morgan Stanley.
| Problem | Difficulty |
|---|---|
| Delete and Earn | Medium |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| 3Sum | Medium |
| Word Search | Medium |
| Longest Common Subsequence | Medium |
| Container With Most Water | Medium |
| Longest Increasing Subsequence | Medium |
Unique to Citadel (91)
Problems in Citadel's list that do not appear at Morgan Stanley.
Unique to Morgan Stanley (50)
Problems in Morgan Stanley's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and Morgan Stanley share?
Citadel and Morgan Stanley share 10 LeetCode interview questions. 91 problems appear only in Citadel's list and 50 appear only in Morgan Stanley's list.
What topics overlap most between Citadel and Morgan Stanley?
The most common shared topics between Citadel and Morgan Stanley are Array (8 shared questions), Dynamic Programming (4 shared questions), Hash Table (3 shared questions), Sorting (3 shared questions), String (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or Morgan Stanley?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. Morgan Stanley has 13 Easy, 40 Medium, and 7 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and Morgan Stanley?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 Morgan Stanley-specific questions to round out your prep.