The Short Version
This claim is false. There is no credible evidence that George Soros was placed under house arrest by U.S. federal authorities in March 2026. Multiple independent fact-checks found no DOJ or FBI statements, no court filings, and no reporting from any major news outlet supporting this claim. The only source backing it is an anonymous, uncorroborated crypto social media post. While the DOJ did direct prosecutors to investigate Soros-linked organizations in 2025, that activity involved foundations — not any personal detention of Soros himself.