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Calamos Investments Quantitative Analyst Interview Questions

The questions to prepare for a Calamos Investments Quantitative Analyst interview. Questions from real interview reports rank first. Updated daily.

12questions
~2htotal time
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1
Machine LearningStart here. 4 questions · ~32 min
Handling Overfitting in Predictive ModelsMedium

Explain how to diagnose and reduce overfitting using regularization, validation strategy, and model complexity controls.

Cross-ValidationBias-Variance TradeoffRegularizationCalamos Investments
Tree-Based Models in PracticeMedium

Evaluates practical ML modeling skills and ability to explain modeling choices.

Machine LearningCalamos Investments
Neural Networks vs RegressionMedium

Assesses model selection judgment and understanding of tradeoffs in financial modeling.

Neural NetworksCalamos Investments
Walk me through a recent machine learning project Medium

Walk me through a recent machine learning project you deployed. What were the biggest technical hurdles?

Cross-ValidationFeature EngineeringSupervised LearningCalamos Investments
2
Behavioral & Leadership6 questions · ~48 min
Most Relevant Analytical ExperienceEasy

Tests whether you can connect your resume to the role through specific analytical work, ownership, and stakeholder impact.

backgroundqualificationsself introductionCalamos Investments
Walk Me Through Your Latest ExperienceEasy

Assesses clarity of communication and relevance of experience to the role.

experienceCalamos Investments
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3
More topics2 questions · ~16 min
Statistics and Probability FoundationsMedium

Tests command of statistics and probability concepts used in quant research.

statisticsresumeCalamos Investments
Process for Cleaning Messy DataMedium

Tests end-to-end data cleaning workflow and validation before analysis.

data cleaningexperienceprocessCalamos Investments

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Handling Missing DataMedium
Practice
Practice drill

Standardize missing observation fields with fallback values, missingness flags, and ordered output.

Window Functionsmissing valuesdata cleaningEversource EnergyCincinnati Children's HospitalAdtalem Global Education
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
Your Data ProjectMedium
Practice
Practice drill

Use joins, aggregation, and a CTE to identify TikTok Shop sellers with at least two completed orders.

experienceJoinsData ManipulationTikTokTikTok Shop
The finish line: interview-readyComplete all 12 questions plus 3 hands-on drills to finish this plan.