Thermo Fisher Scientific
TMO
2,630 hedge funds and large institutions have $169B invested in Thermo Fisher Scientific in 2026 Q2 according to their latest regulatory filings, with 202 funds opening new positions, 935 increasing their positions, 1,163 reducing their positions, and 148 closing their positions.
36% more first-time investments, than exits
New positions opened: 202 | Existing positions closed: 148
3% more capital invested
Capital invested by funds: $164B → $169B (+$5.08B)
0.95% more ownership
Funds ownership: 89.47% → 90.42% (+0.95%)
1% more funds holding
Funds holding: 2,612 → 2,630 (+18)
3% less call options, than puts
Call options by funds: $1.04B | Put options by funds: $1.07B
16% less funds holding in top 10
Funds holding in top 10: 77 → 65 (-12)
20% less repeat investments, than reductions
Existing positions increased: 935 | Existing positions reduced: 1,163
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$1.59B |
| 2 |
Dodge & Cox
San Francisco,
California
|
+$1.45B |
| 3 |
JP Morgan Chase
New York
|
+$820M |
| 4 |
SG Americas Securities
New York
|
+$381M |
| 5 |
BlackRock
New York
|
+$236M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Bank of America
Charlotte,
North Carolina
|
-$786M |
| 2 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$576M |
| 3 |
Pictet Asset Management
Carouge,
Switzerland
|
-$474M |
| 4 |
GIM
Generation Investment Management
London,
United Kingdom
|
-$380M |
| 5 |
CCM
Cantillon Capital Management
New York
|
-$378M |
TMO Hedge Fund Activity: Q2 2026 in Review
2,630 of the 8,345 institutional investors tracked by Wall St. Rank reported a position in Thermo Fisher Scientific (TMO) for Q2 2026, worth a combined $169B — up 3.1% from $164B a quarter earlier.
Buyers outnumbered sellers: 202 funds opened new TMO positions and 148 closed out — a net gain of 54 holders — while 935 added to existing stakes and 1,163 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $1.59B. The largest seller was Bank of America, cutting an estimated $786M.
- 2,630 institutional investors held Thermo Fisher Scientific (TMO) as of Q2 2026, up from 2,612 in Q1 2026.
- Funds reported $169B of Thermo Fisher Scientific stock for Q2 2026, up 3.1% quarter-over-quarter.
- 202 funds opened new Thermo Fisher Scientific positions in Q2 2026 and 148 closed out, a net change of +54 holders.
- The largest Thermo Fisher Scientific buyer in Q2 2026 was Fidelity Investments, an estimated $1.59B added.
- The largest Thermo Fisher Scientific seller in Q2 2026 was Bank of America, an estimated $786M sold.
Based on aggregated 13F filings for Q2 2026.