Ken Griffin: Founder of Citadel and Citadel Securities

Because of the podcast I get to meet a lot of super successful people. I'm always asking them "Who is the smartest person you know" and "Who do you think has the best business?". "Ken Griffin" is a very common answer. I've heard Ken described in two ways: "Winner" and "Killer". For years I've come across interesting anecdotes about Ken. Like when he appears as a 19 year old kid in Ed Thorp's excellent autobiography A Man For All Markets. https://amzn.to/4ldz0uy Or when John Arnold describe Ken's intense competitive drive following the blowup of Enron. https://x.com/JohnArnoldFndtn/status/1888642915494244717 And then consider the fact that I'm obsessed with people who run their business for decades (Ken founded Citadel 35 years ago and Citadel Securities 23 years ago) — and I knew I had to make an episode about his life and work. The only problem was there's no great biography of Ken. So to make this episode I transcribed this talk that Ken gave at Yale. https://youtu.be/_76ZkKpdLAw?si=YM68pGBwPUcQlHCA And for additional context I read the book Ken recommends: Hardball: Are You Playing to Play or Playing to Win. https://amzn.to/3QVg4Dd ---- Ramp gives you everything you need to control spend, watch your costs, and optimize your financial operations —all on a single platform. Make history's greatest entrepreneurs proud by going to Ramp and learning how they can help your business control your costs and save more. https://ramp.com/ ---- Founders Notes gives you the ability to tap into the collective knowledge of history's greatest entrepreneurs on demand. Use it to supplement the decisions you make in your work. Get access to Founders Notes here. https://www.foundersnotes.com/ ---- Join my free email newsletter to get my top 10 highlights from every book https://davidsenra.com

David Senrahost

Apr 22, 20251h 2mWatch on YouTube ↗

EPISODE INFO

Released: April 22, 2025
Duration: 1h 2m
Channel: Founders Podcast
Watch on YouTube: ▶ Open ↗

EPISODE DESCRIPTION

Because of the podcast I get to meet a lot of super successful people. I'm always asking them "Who is the smartest person you know" and "Who do you think has the best business?". "Ken Griffin" is a very common answer. I've heard Ken described in two ways: "Winner" and "Killer". For years I've come across interesting anecdotes about Ken. Like when he appears as a 19 year old kid in Ed Thorp's excellent autobiography A Man For All Markets. https://amzn.to/4ldz0uy Or when John Arnold describe Ken's intense competitive drive following the blowup of Enron. https://x.com/JohnArnoldFndtn/status/1888642915494244717 And then consider the fact that I'm obsessed with people who run their business for decades (Ken founded Citadel 35 years ago and Citadel Securities 23 years ago) — and I knew I had to make an episode about his life and work. The only problem was there's no great biography of Ken. So to make this episode I transcribed this talk that Ken gave at Yale. https://youtu.be/_76ZkKpdLAw?si=YM68pGBwPUcQlHCA And for additional context I read the book Ken recommends: Hardball: Are You Playing to Play or Playing to Win. https://amzn.to/3QVg4Dd ---- Ramp gives you everything you need to control spend, watch your costs, and optimize your financial operations —all on a single platform. Make history's greatest entrepreneurs proud by going to Ramp and learning how they can help your business control your costs and save more. https://ramp.com/ ---- Founders Notes gives you the ability to tap into the collective knowledge of history's greatest entrepreneurs on demand. Use it to supplement the decisions you make in your work. Get access to Founders Notes here. https://www.foundersnotes.com/ ---- Join my free email newsletter to get my top 10 highlights from every book https://davidsenra.com

SPEAKERS

David Senra
host
Host of the Founders Podcast, known for summarizing and commenting on founder biographies and directing listeners to davidsenra.com.

EPISODE SUMMARY

In this episode of Founders Podcast, featuring David Senra, Ken Griffin: Founder of Citadel and Citadel Securities explores ken Griffin's Hardball Mindset: Risk, Relentless Learning, and Winning by Landslide Senra frames Griffin through John Arnold's tweet about Citadel's relentless Enron recruiting and the book Hardball, which argues that winners play with total commitment and seek decisive victory.

RELATED EPISODES