AMENTUM HOLDINGS INC (AMTM) Institutional Ownership and Insiders Activity

AMENTUM HOLDINGS INC (AMTM) is widely held by institutional investors, with 1 tracked firm reporting positions valued at approximately $11.10M based on SEC Form 13F filings for the quarter ended June 30, 2026.

Sequoia Fund is the largest disclosed holder, reporting approximately $11.10M in AMTM holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Sequoia Fund representing the majority of disclosed value.