THERMO FISHER SCIENTIFIC INC (TMO) Institutional Ownership

TMO is currently held by 11 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $2.34B based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026.

The largest disclosed holder is Viking Global Investors, which reported ownership valued at approximately $819.88M in its March 31, 2026 13F filing. Based on current market prices and the latest disclosed share count, Viking Global Investors's TMO position is now estimated to be worth approximately $821.00M, representing an estimated gain of +0.14% since the filing period.

Major shareholders tracked on this page include Viking Global Investors, Parnassus Endeavor Fund, Cantillon Capital Management, and other prominent asset managers. Collectively, these investors account for approximately 99% of the total disclosed value among the investors covered in this analysis.

This page tracks fund ownership trends, hedge fund exposure, portfolio concentration, historical 13F filings, and estimated holding performance to help investors analyze smart money sentiment toward THERMO FISHER SCIENTIFIC INC (TMO).

Institutional Ownership Trend

Portfolio quarterInstitutional holdersTotal reported valueTotal shares
Q1 202611$2,341,919,7444,771,294
Q4 202512$2,350,094,0694,062,125
Q3 202510$1,919,227,1073,964,999
Q2 202511$2,679,698,5026,643,425
Q1 202512$2,713,638,6615,785,966
Q4 202413$3,060,913,7876,197,240
Q3 202411$3,044,334,8405,344,618
Q2 202410$3,018,811,1355,982,694
Q1 202411$4,226,884,6727,732,283
Q4 202311$4,290,488,2908,246,816
Q3 202313$4,279,939,0568,793,626
Q2 202313$4,716,801,0559,713,792

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