Skip to main content
TMO logo

TMO · Thermo Fisher Scientific Inc.

Track TMO — free
Market Cap
$226.94B
Shares
369.75M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 2,625
Total Value: $170,237,253,411
Total Shares: 339,551,054
Showing 1–100 of 2,697 holdings by value · page 1 of 27

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 2,625 13F filers · Δ vs Mar 31, 2026
Top Holder
9.1%
Sep 2023 → Jun 2026 · range 9.1% – 10.0%
+0.0 pts
Top 5
28.5%
Sep 2023 → Jun 2026 · range 27.7% – 30.4%
+0.8 pts
Top 10
39.3%
Sep 2023 → Jun 2026 · range 38.1% – 41.9%
+1.2 pts
HHI
238
Sep 2023 → Jun 2026 · range 232 – 270
Broadly held+6

Quarterly Activity

vs Mar 31, 2026
New
199
Increased
932
Decreased
1,163
Sold Out
192
Unchanged
331
Holder count: +7
Institutional value: +3.1%
Shares held: +1.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 2,697
Export CSV
Holder Value (USD) % of 13F Shares Open
Key facts CIK 97745 CUSIP 883556102 13F (30d) 1209 filings 1122 filers Visit website Investor relations