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Millennium Interview Questions

Study our database of real interview questions and answers verified by hiring managers and candidates.

11 questions
548 companies
2 roles
Last updated Nov 2026

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Quantitative Researcher Quantitative Developer

Quantitative Researcher Quantitative Developer

Write Python to compute the maximum drawdown of a trading strategy's P&L.
10 hours ago
What are the assumptions of linear regression? Does multicollinearity bias the coefficient estimates, and what changes under heteroskedasticity?
+110 hours ago
Merge all overlapping intervals in a list of intervals.
+110 hours ago
Why do you want to work at this firm, and why this role?
+610 hours ago
How do you tune a random forest and cross-validate it? How does a random forest compare with XGBoost, and why does ensembling help?
+110 hours ago
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How would you test a news sentiment factor?
10 hours ago
Given end-of-day price and volume data, what strategies could you build? Walk through the full research workflow.
10 hours ago
What problem arises when a backtest covers a very long period, and how would you fix it?
10 hours ago
Starting from 0, repeatedly add a random number sampled uniformly from [0,1]. What is the expected number of samples needed for the running sum to exceed 2?
10 months ago
Given the mean and correlation of (x, y) in each of the four sign quadrants, how would you test whether x and y are linearly correlated overall?
10 months ago
What is your favourite partial differential equation?
10 months ago

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