Which funds own TMO
Thermo Fisher Scientific Inc in the Q2 2026 filings. At least 26 of the 91 current managers on file reported a position, worth $25.5bn between them. At least a fifth of the current managers on file hold it, which is a crowd without being the whole market. The quarter went one way: 15 managers opened or added against 12 cutting.
- Managers holding
- 26
- at least, of 91 current
- Combined value
- $25.5bn
- as reported
- Opened
- 4
- new this quarter
- Added to
- 11
- already held
- Trimmed or sold out
- 12
- 1 sold out entirely
Only each manager’s largest 200 positions are listed here, so a smaller holder may be missing.
Managers reporting a position
Largest first. Weight is the share of that manager’s whole reported book, which is the number worth quoting: $400m is a rounding error in one book and a defining bet in another.
| Manager | Value | Weight | Shares | Change on the quarter | Action |
|---|---|---|---|---|---|
| Fidelity (FMR LLC) Long-only · $2304bn book | $7.1bn | 0.3% | 14,084,488 | +$1.8bn+3,308,052 | Added |
| Capital World Investors Long-only · $846bn book | $3.1bn | 0.4% | 6,195,370 | -$161m-450,946 | Trimmed |
| T. Rowe Price Associates Inc Long-only · $999bn book | $2.6bn | 0.3% | 5,116,336 | -$539m-1,199,135 | Trimmed |
| MFS Investment Management Long-only · $315bn book | $2.3bn | 0.7% | 2,965,714 | +$26m-47,395 | Trimmed |
| Capital Research Global Investors Long-only · $717bn book | $2.1bn | 0.3% | 4,147,545 | -$90m-267,076 | Trimmed |
| Dodge & Cox Value · $191bn book | $1.5bn | 0.8% | 3,054,778 | +$1.5bn+3,029,037 | Added |
| Invesco Ltd Long-only · $1264bn book | $1.1bn | 0.1% | 2,179,010 | -$6.5m-56,710 | Trimmed |
| Viking Global Investors LP Long/short equity · $35.1bn book | $971m | 2.8% | 1,937,415 | +$152m+269,390 | Added |
| AllianceBernstein LP Long-only · $302bn book | $909m | 0.3% | 1,849,037 | -$361m-341,571 | Trimmed |
| Farallon Capital Management LLC Long/short equity · $21.7bn book | $526m | 2.4% | 1,049,185 | +$93m+167,700 | Added |
| Arrowstreet Capital LP Quantitative · $225bn book | $505m | 0.2% | 1,007,394 | +$193m+373,025 | Added |
| D1 Capital Partners LP Long/short equity · $34.8bn book | $410m | 1.2% | 817,123 | +$53m+92,118 | Added |
| Janus Henderson Group Ltd Long-only · $245bn book | $338m | 0.1% | 673,276 | +$13m+13,018 | Added |
| Neuberger Berman Group LLC Long-only · $150bn book | $335m | 0.2% | 667,506 | -$101m-218,064 | Trimmed |
| Baillie Gifford & Co Long-only · $110bn book | $324m | 0.3% | 645,648 | -$20m-52,793 | Trimmed |
| D. E. Shaw & Co. Quantitative · $210bn book | $322m | 0.2% | 641,637 | +$173m+338,789 | Added |
| Glenview Capital Management LLC Long/short equity · $5.5bn book | $315m | 5.7% | 627,240 | +$191m+376,715 | Added |
| Balyasny Asset Management LLC Multi-strategy · $80.2bn book | $225m | 0.3% | 449,628 | -$48m-105,845 | Trimmed |
| Woodline Partners LP Long/short equity · $32.4bn book | $159m | 0.5% | 316,281 | -$7.5m-21,538 | Trimmed |
| Point72 Asset Management LP Multi-strategy · $90.7bn book | $139m | 0.2% | 277,735 | -$35m-75,806 | Trimmed |
| Freestone Grove Partners LP Multi-strategy · $15.6bn book | $113m | 0.7% | 226,238 | opened226,238 | New |
| Man Group PLC Quantitative · $62.7bn book | $98m | 0.2% | 195,160 | +$75m+148,758 | Added |
| Markel Group Inc Activist · $13.1bn book | $37m | 0.3% | 73,100 | +$3.7m+6,000 | Added |
| ExodusPoint Capital Management LP Multi-strategy · $15.5bn book | $16m | 0.1% | 32,661 | opened32,661 | New |
| Winton Group Ltd Quantitative · $3.1bn book | $14m | 0.5% | 28,360 | opened28,360 | New |
| Element Capital Management LLC Macro · $3.2bn book | $2.0m | 0.1% | 4,000 | opened4,000 | New |
Sold out of this quarter
Valued at what the position was worth in the previous filing, because by this one it is gone.
- Renaissance Technologies LLC · Quantitative$68m held before
Ownership through time
At least 36 of the 95 managers whose filings are on file listed TMO in Q2 2026, against 19 in Q2 2013. 2 managers more than in Q1 2026: 5 started positions; 2 listed it again; 1 sold out, by its own filing; 4 no longer listed it among the positions read, which can mean a holding below the listed range, a filing that reported no holdings, or a filing not yet made.
Each manager’s largest 500 positions a quarter are read, so a small holding in a very large book can be missing, and a manager is counted as leaving only where its own filing shows it.
- Q2 2013: 19
- Q3 2013: 19
- Q4 2013: 18
- Q1 2014: 22
- Q2 2014: 22
- Q3 2014: 22
- Q4 2014: 29
- Q1 2015: 26
- Q2 2015: 27
- Q3 2015: 19
- Q4 2015: 21
- Q1 2016: 21
- Q2 2016: 20
- Q3 2016: 18
- Q4 2016: 31
- Q1 2017: 27
- Q2 2017: 29
- Q3 2017: 28
- Q4 2017: 20
- Q1 2018: 28
- Q2 2018: 27
- Q3 2018: 27
- Q4 2018: 30
- Q1 2019: 30
- Q2 2019: 33
- Q3 2019: 26
- Q4 2019: 26
- Q1 2020: 27
- Q2 2020: 29
- Q3 2020: 29
- Q4 2020: 33
- Q1 2021: 35
- Q2 2021: 33
- Q3 2021: 32
- Q4 2021: 38
- Q1 2022: 32
- Q2 2022: 33
- Q3 2022: 26
- Q4 2022: 29
- Q1 2023: 35
- Q2 2023: 39
- Q3 2023: 39
- Q4 2023: 41
- Q1 2024: 30
- Q2 2024: 38
- Q3 2024: 30
- Q4 2024: 36
- Q1 2025: 31
- Q2 2025: 39
- Q3 2025: 32
- Q4 2025: 32
- Q1 2026: 34
- Q2 2026: 36
- Q2 2013: $8.8bn
- Q3 2013: $10.1bn
- Q4 2013: $12.5bn
- Q1 2014: $12.8bn
- Q2 2014: $12.9bn
- Q3 2014: $13.6bn
- Q4 2014: $14.7bn
- Q1 2015: $14.9bn
- Q2 2015: $14.1bn
- Q3 2015: $13.4bn
- Q4 2015: $15.4bn
- Q1 2016: $14.7bn
- Q2 2016: $14.9bn
- Q3 2016: $15.7bn
- Q4 2016: $13.2bn
- Q1 2017: $13.8bn
- Q2 2017: $15.7bn
- Q3 2017: $17.9bn
- Q4 2017: $18.2bn
- Q1 2018: $20.1bn
- Q2 2018: $19.9bn
- Q3 2018: $23.6bn
- Q4 2018: $21.6bn
- Q1 2019: $27.4bn
- Q2 2019: $28.8bn
- Q3 2019: $27.9bn
- Q4 2019: $30.3bn
- Q1 2020: $25.8bn
- Q2 2020: $32.6bn
- Q3 2020: $38.9bn
- Q4 2020: $39.2bn
- Q1 2021: $36.5bn
- Q2 2021: $38.3bn
- Q3 2021: $42.6bn
- Q4 2021: $50.1bn
- Q1 2022: $43.2bn
- Q2 2022: $38.9bn
- Q3 2022: $34.3bn
- Q4 2022: $37.0bn
- Q1 2023: $37.1bn
- Q2 2023: $33.5bn
- Q3 2023: $32.6bn
- Q4 2023: $32.7bn
- Q1 2024: $34.1bn
- Q2 2024: $30.6bn
- Q3 2024: $33.8bn
- Q4 2024: $27.6bn
- Q1 2025: $24.2bn
- Q2 2025: $18.8bn
- Q3 2025: $21.9bn
- Q4 2025: $29.9bn
- Q1 2026: $24.4bn
- Q2 2026: $26.4bn
Between the quarter ends of Q1 2026 and Q2 2026. Each change in shares is valued at the Q2 2026 price, so the price’s own move is left out; a 13F shows the two quarter ends, not when in between anything was bought or sold.
Started in Q2 2026
Largest increases, by shares
- Fidelity (FMR LLC)10,776,436 to 14,084,488 shares+$1.7bn
- Dodge & Cox25,741 to 3,054,778 shares+$1.5bn
- Glenview Capital Management LLC250,525 to 627,240 shares+$189m
- Arrowstreet Capital LP634,369 to 1,007,394 shares+$187m
- D. E. Shaw & Co.302,848 to 641,637 shares+$170m
Largest decreases, by shares
- T. Rowe Price Associates Inc6,315,471 to 5,116,336 shares-$601m
- Wellington Management Group LLP1,478,251 to 979,181 shares-$250m
- Capital World Investors6,646,316 to 6,195,370 shares-$226m
- AllianceBernstein LP2,190,608 to 1,849,037 shares-$168m
- Holocene Advisors LP341,267 to 51,680 shares-$145m
Left it
- Renaissance Technologies LLCwas $68m
| Manager | Value over time | First listed | Largest | Q2 2026 |
|---|---|---|---|---|
| Fidelity (FMR LLC) | Q2 2013 | $7.4bn | $7.1bn | |
| Capital World Investors | Q3 2013 | $9.9bn | $3.1bn | |
| T. Rowe Price Associates Inc | Q2 2013 | $8.7bn | $2.6bn | |
| MFS Investment Management | Q2 2013 | $7.5bn | $2.3bn | |
| Capital Research Global Investors | Q2 2013 | $6.3bn | $2.1bn | |
| Dodge & Cox | Q2 2013 | $1.5bn | $1.5bn | |
| Invesco Ltd | Q2 2013 | $1.3bn | $1.1bn | |
| Viking Global Investors LP | Q2 2013 | $1.2bn | $971m | |
| AllianceBernstein LP | Q2 2013 | $1.4bn | $909m | |
| Farallon Capital Management LLC | Q4 2019 | $723m | $526m | |
| Arrowstreet Capital LP | Q4 2018 | $614m | $505m | |
| Wellington Management Group LLP | Q3 2014 | $3.4bn | $491m | |
| D1 Capital Partners LP | Q1 2026 | $410m | $410m | |
| Janus Henderson Group Ltd | Q2 2013 | $1.2bn | $338m | |
| Neuberger Berman Group LLC | Q4 2015 | $765m | $335m | |
| Polen Capital Management LLC | Q4 2022 | $1.9bn | last listed Q4 2025 | |
| TCI Fund Management Ltd | Q4 2022 | $1.7bn | last listed Q1 2024 | |
| Marshall Wace LLP | Q4 2016 | $696m | last listed Q1 2026 | |
| AQR Capital Management LLC | Q2 2013 | $636m | last listed Q1 2025 | |
| Lone Pine Capital LLC | Q2 2013 | $506m | last listed Q4 2022 | |
| Two Sigma Advisers LP | Q4 2014 | $485m | last listed Q2 2025 | |
| Jane Street Group LLC | Q1 2021 | $386m | last listed Q4 2025 | |
| Millennium Management LLC | Q4 2014 | $313m | last listed Q3 2025 | |
| Egerton Capital UK LLP | Q2 2019 | $304m | last listed Q2 2023 | |
| Two Sigma Investments LP | Q1 2014 | $258m | last listed Q1 2026 |
What TMO is worth
Knowing who owns it is half the question. The other half is what it is worth against the companies it trades beside, which is the one an interviewer will follow up with.
Build the comp set around TMO →How much of the picture this is
A Form 13F reports US-listed long equity and nothing else: no shorts, no bonds, no cash and no non-US listings. It arrives forty-five days after the quarter ends, so a manager who sold in July still shows the position in a filing published in August. This page reads the managers on file here rather than every filer in the market, and each manager’s largest positions rather than the whole table, so a small position in a very large book may not appear. Say “their last filing showed” rather than “they own”, and the distinction will do you credit.
What to do with a name the funds are buying
Knowing who owns something is the start of a pitch, not the pitch. The next questions are what it is worth and why they were buying.
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The holdings, every quarter, and the week between
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