After Jane Street's success, top global trading firms like Citadel Securities, IMC Trading, Optiver, and Millennium are ...

Explore the suspension of Joseph Sapio, former Head of the US Repo Desk, for failing to supervise traders effectively.

Zohran Mamdani wants Ken Griffin to pay more tax on his Central Park penthouse. We break down what it means for homeowners ...

An internal company memo revealed the person is a neurologist who previously worked at Morgan Stanley and is a Harvard grad.

Learn about SIFMA's request to extend CAT reporting deadlines and its potential impact on market integrity and investor ...

Citadel's Ken Griffin breaks Sotheby's record with bids for two Civil War-era documents. Crain’s Laura Turbay discusses with ...

In July 2024, Griffin purchased a late Jurassic-era stegosaurus skeleton for a record-setting $44.6 million. Griffin has ...

This year, it passed UBS to become the largest of “dark pools”—those off-exchange platforms where institutions can trade ...

The stock market has proven resilient in the face of President Donald Trump's aggressive trade war and conflict in the Middle ...

Billionaire Ken Griffin, founder of $63 billion (in assets) Citadel hedge fund and market maker Citadel Securities, slammed the Trump Administration’s handling of the economy and the Republicans ...

Griffin, 56, built Citadel from a Harvard dorm‑room trading venture in 1990 into a multistrategy powerhouse managing about $65 billion in investment capital and employing more than 3,100 people.

Citadel's Ken Griffin said he doesn't think AI will shake up the investment business. Griffin said his hedge fund uses AI "a little bit." AI works well in short-term trading but falls short when ...