Citadel Securities–styleQuant ResearcherQuantitative ResearcherQuestion #9

Given an array representing the price of a stock on each day, and an integer k, determine the maximum profit you can achieve by completing at most k buy-sell transactions (you must sell before buying again).

Build Your Approach

State the assumptions, try a simple case, then work toward a general solution. Check the result and explain how it changes if an assumption changes.

Try the free diagnostic with worked solutions →

Get Free Interview Prep Resources

Practice the Reasoning Behind the Answer

Bring your target roles and interview timeline to a free quant consult. Discuss your preparation priorities and how Quant Blueprint’s lessons, practice and mock interviews can help.

Book a Free Quant Consult

Your goals · your preparation · your next steps