THERMO FISHER SCIENTIFIC INC (TMO) Institutional Ownership and Insiders Activity

THERMO FISHER SCIENTIFIC INC (TMO) is widely held by institutional investors, with 2583 firms reporting positions valued at approximately $163.47B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Blackrock, Inc. is the largest disclosed holder, reporting approximately $15.50B in TMO holdings in its latest filing.

Recent insider activity includes 50 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.