Check out your Company Bowl for anonymous work chats.
We’re pleased to welcome our 2024 summer interns, an exceptional group from 80 schools around the world. We can’t wait to see the impact they’ll have during the next 11 weeks!
Meet Citadel Securities' 2024 Summer Interns
“We have been using machine learning for the larger part of 20 years,” explains Shyam Rajan, Citadel Securities’ global head of Fixed Income, at the Milken Institute Global Conference. “The AI thing is interesting because you're as good as your training model.”
How Citadel Securities Engages Machine Learning
What’s real leadership? As Citadel Securities Founder Ken Griffin explains at the Milken Institute Global Conference, it’s about making decisions “before the crisis becomes a possibility so that the crisis can never become a possibility.”
Ken Griffin on the Importance of Real Leadership
What are the key issues for European Union policymakers and regulators regarding financial market reform? Virginie Saade, our head of Government Regulatory and Policy for EMEA, joins Stephen Berger, global head of Government and Regulatory Policy, in part one of a conversation about the changing landscape in EU and UK markets with Virginie and Donna Rix, General Counsel International. As Virginie explains, “What they are trying to do here is to make the real economy rely less on bank lending and more on financial markets, which is certainly the case in the United States.” As she notes, the quickening pace for EU market reform includes four key components: transparency and the trading regime, the clearing landscape, the listing rules, and efforts to expand retail participation in the EU. “All these reforms… are at the core of the Capital Markets Union, and that is the overarching goal, I would say, of the European Union,” says Virginie. “So, basically, they are trying to make our markets more attractive, streamlined and competitive.”
https://www.youtube.com/watch?v=B_FxIxA7vLs
It’s not everywhere that an engineering intern gets to meet 1:1 with the CTO, but that’s exactly the type of access and opportunity you’ll find at Citadel Securities. Read what our colleague Hasan took away from that conversation, the impact he’s making, and the advice he has for those interested in pursuing a similar path.

The Citadel Securities software engineering intern who only began coding at university
“Every day is different. Every week is different. That is tough but exciting—and it keeps you sharp.” Meet Louise: scientist, trader and mentor who applies her passion for physics to help us excel every day.
https://youtu.be/sCZ0LjrPI8s
We’ve partnered with Google Cloud to build the next generation of our quantitative research platform. Moving to the cloud allows us to stay on the cutting edge of technology and increase productivity for our quantitative researchers. Read more about our industry-leading partnership.

How Citadel Securities reimagines quantitative research on the cloud for speed and scale
“Software engineering is one of the careers where nothing stays the same.” Hear our founder Ken Griffin describe the three career paths engineers can pursue to excel in an ever-changing field.
Ken Griffin on the Three Career Paths for Software Engineers
This January, we invited 20 top sophomore college students to our new HQ in Miami to put their quantitative skills to the test. Hear about their experience at our first ever Quant Research Invitational.
Citadel Securities Quant Invitational
“The person in the room who can imagine a new way of doing things is on safe ground vis-à-vis ChatGPT.” Hear our founder Ken Griffin discuss why commercial value will increasingly accrue to innovators and creators.
Ken Griffin on Innovation in the Age of AI