I’m going to ground this in current disclosure data first.
Two that stand out:
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Unusual insider buy: Nasdaq (NDAQ) — Investor AB reportedly made a ~$4.88M insider purchase on June 15, 2026. That is more notable than routine small executive buys because of the size. I’d still verify the exact Form 4 before treating it as a signal. Source surfaced via insider-trading trackers: InsiderFlow.
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Congressional disclosure: Palantir (PLTR) — Sen. John Boozman disclosed a PLTR purchase of $1,001–$15,000, with the transaction dated May 15, 2026 and disclosed June 16, 2026. This is not “major” by dollar size, but it is notable because PLTR is a politically sensitive defense/AI name.
Other recent congressional buys from the same disclosure batch included Albemarle (ALB) by Boozman and EQT (EQT) by Rep. Thomas Kean, both in the $1,001–$15,000 range.