Public news from the trading firms and funds we track, curated for the people building and hiring their technical teams.
Ken Griffin's Citadel absorbed most of the equity book of Leopold Aschenbrenner's AI-focused fund after leverage turned a strong return streak into a forced liquidation during the July tech selloff. Read more at Reuters →
Goldman Sachs and JPMorgan issued broader margin calls as AI-linked stocks pressured crowded hedge fund trades, underlining how quickly risk infrastructure has to respond when positioning turns. Read more at Hedgeweek →
Millennium is in talks to raise $20bn in two tranches, double its earlier target, which would be the largest capital raise ever by a hedge fund, on top of its existing $92bn AUM. Read more at Bloomberg →
The team has grown to around 20 people with plans to keep hiring as Kalshi and Polymarket volumes surge, a direct signal of where technical hiring demand is heading next. Read more at Bloomberg →