Citadel

2 articles filed under this tag.

Quantitative Trading

When the AI Trade Turned on Itself

Leopold Aschenbrenner's Situational Awareness LP lost roughly two-thirds of its value in July and sold a $16bn book to Citadel. The episode is a case study in AI-era crowding, leverage and the fragility of a consensus trade.

11 min read

Markets

The $35bn AI Margin Call That Shook Hedge Funds

How the collapse of Leopold Aschenbrenner's Situational Awareness fund exposed the leverage and crowding beneath the 2026 AI rally — and why it matters for markets, quants and regulators.

12 min read