QUEST DIAGNOSTICS INC (DGX) Institutional Ownership and Insiders Activity

QUEST DIAGNOSTICS INC (DGX) is widely held by institutional investors, with 1084 firms reporting positions valued at approximately $21.96B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $1.97B in DGX holdings in its latest filing.

Recent insider activity includes 15 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.