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Insider Radar — Week of September 28, 2026

calendar_today October 7, 2026 person AlphAI domain alphaai

Reported insider buying was $673.5 million in the week of September 28 and selling was $2.10 billion, a ratio of 3.1 to 1 against a median of 11.7 over the preceding twenty-six weeks. Berkshire Hathaway added $246.5 million of Lennar in its third straight week of filings, and Baker Bros. Advisors bought $157.0 million of Kodiak Sciences in the week the company reported Phase 3 results.

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