Citadel expands internship to 350+ from 115,900 applicants

Citadel and Citadel Securities this summer expanded their internship program to more than 350 interns, selected from a record 115,900 applicants for quantitative research, trading and engineering roles. The cohort convened this week in Palm Beach. The implied acceptance rate is about 0.36%.

The firms say they enlarged the program to build internal talent pipelines as demand for quantitative and technical skills rises. Iris Wang, head of campus recruitment at Citadel, noted the decision reflects a focus on developing junior staff internally rather than setting a fixed headcount cap.

Interns work on live projects with full-time teams, receive regular feedback and give a final presentation to senior leadership. Return-offer decisions are based on performance and are reviewed by senior executives, including Ken Griffin and Citadel Securities CEO Peng Zhao.

About 90% of the interns study STEM subjects such as mathematics, computer science and physics; the remainder study economics or finance. The class includes students from more than 90 universities worldwide, with strong representation from MIT, Stanford, the University of Chicago, Georgia Tech and the University of Texas at Austin. The cohort also includes several international mathematics Olympiad medallists and top prize winners from national programming competitions.

Compensation ranges from roughly $4,300 to $5,800 per week depending on role and experience. Interns receive signing bonuses and can choose company-provided housing or a $15,000 accommodation stipend. Evaluations focus on technical skill, problem solving and collaboration.

The firms have incorporated artificial intelligence tools into workflow and parts of the hiring process. Ken Griffin has acknowledged that AI can compress tasks that once required weeks into hours. Recruitment leaders indicated candidates are increasingly assessed on adaptability, judgment and the ability to apply AI tools effectively as well as on core technical skills.

The expansion aligns with a broader trend of trading and asset-management firms creating structured graduate and internship pipelines. Other managers are planning similar programs, including an investing internship scheduled to start in 2027 and a nine-month training initiative for recent graduates.

At the program’s end, interns present their summer work to senior leaders and those judged capable of long-term success are typically offered full-time roles. The size of the class and the record applicant pool are factual measures of the level of interest in entry-level roles at the two firms.