ADAPTIVE BIOTECHNOLOGIES (ADPT) Institutional Ownership and Insiders Activity

ADAPTIVE BIOTECHNOLOGIES (ADPT) is widely held by institutional investors, with 4 tracked firms reporting positions valued at approximately $450.30M based on SEC Form 13F filings for the quarter ended March 31, 2026.

Viking Global Investors is the largest disclosed holder, reporting approximately $416.31M in ADPT holdings in its latest filing.

Institutional ownership among tracked investors remains highly concentrated, with Viking Global Investors representing the majority of disclosed value.