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 $450.89M 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.

Recent insider activity includes 39 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.