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margin calls

Speedway Scene reporting, analysis and commentary on margin calls, pulled together from across our coverage.

1 article Last updated: 30 Jul 2026 1 section

Connected sections Markets & Finance

Connected topics Situational Awareness Citadel hedge funds Leopold Aschenbrenner AI stocks Federal Reserve

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Citadel Center office tower in the Chicago Loop, the skyscraper long associated with Ken Griffin's Citadel, whose hedge fund bought the bulk of Situational Awareness's public equity portfolio. Photo: Ken Lund / Wikimedia Commons, CC BY-SA 2.0

Markets & Finance

Citadel Absorbs Situational Awareness Stock Book After Leveraged AI Bets Unravel

Margin calls from three prime brokers forced Leopold Aschenbrenner's fund to sell its entire public equity portfolio to Citadel, ending a 439 percent run.

30 Jul 2026 ·10 min read

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Everything Speedway Scene has published on margin calls, gathered in one place: the reporting, the analysis and the commentary that track the subject.

Connected topics

Situational Awareness Citadel hedge funds Leopold Aschenbrenner AI stocks Federal Reserve Donald Trump Iran Array Ukraine

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