Which funds own STE
Steris PLC in the Q2 2026 filings. At least 8 of the 91 current managers on file reported a position, worth $2.3bn between them. It is among the largest positions of fewer than a fifth of the current managers on file. The quarter went one way: 5 managers opened or added against 2 cutting.
- Managers holding
- 8
- at least, of 91 current
- Combined value
- $2.3bn
- as reported
- Opened
- 1
- new this quarter
- Added to
- 4
- already held
- Trimmed or sold out
- 2
- 0 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 |
|---|---|---|---|---|---|
| MFS Investment Management Long-only · $315bn book | $850m | 0.3% | 3,801,077 | -$86m-209,272 | Trimmed |
| Wellington Management Group LLP Long-only · $580bn book | $738m | 0.1% | 3,502,897 | +$102m+629,532 | Added |
| Janus Henderson Group Ltd Long-only · $245bn book | $398m | 0.2% | 1,887,828 | -$15m+24,689 | Added |
| Arrowstreet Capital LP Quantitative · $225bn book | $256m | 0.1% | 1,217,864 | +$142m+698,353 | Added |
| Voloridge Investment Management LLC Quantitative · $23.5bn book | $57m | 0.2% | 269,821 | +$21m+108,558 | Added |
| GAMCO Investors Inc Activist · $11.1bn book | $18m | 0.2% | 84,889 | -$900k0 | Held |
| PDT Partners LLC Quantitative · $1.9bn book | $4.3m | 0.2% | 20,480 | -$2.6m-10,594 | Trimmed |
| Quantbot Technologies LP Quantitative · $2.5bn book | $3.8m | 0.1% | 17,873 | opened17,873 | New |
Ownership through time
At least 17 of the 95 managers whose filings are on file listed STE in Q2 2026, against 10 in Q1 2019. 4 managers more than in Q1 2026: 1 started a position; 4 listed it again; 1 no longer listed it among the positions read, which can mean a holding below the listed range 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.
- Q1 2019: 10
- Q2 2019: 9
- Q3 2019: 14
- Q4 2019: 17
- Q1 2020: 16
- Q2 2020: 12
- Q3 2020: 9
- Q4 2020: 11
- Q1 2021: 9
- Q2 2021: 13
- Q3 2021: 11
- Q4 2021: 9
- Q1 2022: 10
- Q2 2022: 10
- Q3 2022: 11
- Q4 2022: 9
- Q1 2023: 10
- Q2 2023: 10
- Q3 2023: 12
- Q4 2023: 8
- Q1 2024: 8
- Q2 2024: 7
- Q3 2024: 7
- Q4 2024: 7
- Q1 2025: 7
- Q2 2025: 12
- Q3 2025: 9
- Q4 2025: 12
- Q1 2026: 13
- Q2 2026: 17
- Q1 2019: $1.8bn
- Q2 2019: $2.1bn
- Q3 2019: $1.7bn
- Q4 2019: $2.0bn
- Q1 2020: $1.5bn
- Q2 2020: $1.5bn
- Q3 2020: $1.8bn
- Q4 2020: $1.8bn
- Q1 2021: $1.8bn
- Q2 2021: $1.9bn
- Q3 2021: $2.0bn
- Q4 2021: $2.9bn
- Q1 2022: $3.3bn
- Q2 2022: $2.7bn
- Q3 2022: $2.0bn
- Q4 2022: $2.2bn
- Q1 2023: $2.5bn
- Q2 2023: $2.8bn
- Q3 2023: $2.6bn
- Q4 2023: $2.5bn
- Q1 2024: $2.6bn
- Q2 2024: $2.2bn
- Q3 2024: $2.4bn
- Q4 2024: $1.4bn
- Q1 2025: $1.7bn
- Q2 2025: $2.2bn
- Q3 2025: $2.4bn
- Q4 2025: $3.2bn
- Q1 2026: $3.4bn
- Q2 2026: $3.6bn
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
- Arrowstreet Capital LP519,511 to 1,217,864 shares+$147m
- Wellington Management Group LLP2,873,365 to 3,502,897 shares+$133m
- AQR Capital Management LLC1,061,400 to 1,377,297 shares+$66m
- Voloridge Investment Management LLC161,263 to 269,821 shares+$23m
- Invesco Ltd1,708,302 to 1,806,187 shares+$21m
Largest decreases, by shares
- MFS Investment Management4,010,349 to 3,801,077 shares-$47m
- PDT Partners LLC31,074 to 20,480 shares-$2.2m
Left it
No manager on file is shown leaving it.
| Manager | Value over time | First listed | Largest | Q2 2026 |
|---|---|---|---|---|
| MFS Investment Management | Q1 2019 | $1.5bn | $850m | |
| Wellington Management Group LLP | Q1 2019 | $738m | $738m | |
| Janus Henderson Group Ltd | Q1 2019 | $967m | $398m | |
| T. Rowe Price Associates Inc | Q4 2021 | $738m | $386m | |
| Invesco Ltd | Q2 2019 | $380m | $380m | |
| AQR Capital Management LLC | Q1 2020 | $412m | $286m | |
| Arrowstreet Capital LP | Q2 2021 | $256m | $256m | |
| AllianceBernstein LP | Q3 2020 | $396m | $113m | |
| D. E. Shaw & Co. | Q2 2026 | $107m | $107m | |
| Voloridge Investment Management LLC | Q3 2019 | $57m | $57m | |
| Tudor Investment Corp | Q3 2019 | $23m | $23m | |
| Man Group PLC | Q2 2019 | $29m | $21m | |
| GAMCO Investors Inc | Q1 2019 | $22m | $18m | |
| Brevan Howard Capital Management LP | Q2 2024 | $4.3m | $4.3m | |
| PDT Partners LLC | Q2 2022 | $6.9m | $4.3m | |
| Marshall Wace LLP | Q2 2019 | $277m | last listed Q4 2025 | |
| Two Sigma Investments LP | Q3 2019 | $106m | last listed Q1 2026 | |
| Point72 Asset Management LP | Q1 2021 | $104m | last listed Q2 2025 | |
| Balyasny Asset Management LLC | Q4 2019 | $90m | last listed Q4 2021 | |
| Millennium Management LLC | Q1 2019 | $72m | last listed Q4 2019 | |
| Holocene Advisors LP | Q4 2024 | $49m | last listed Q3 2025 | |
| Acadian Asset Management LLC | Q1 2019 | $46m | last listed Q3 2021 | |
| Two Sigma Advisers LP | Q3 2019 | $41m | last listed Q2 2021 | |
| Bridgewater Associates LP | Q3 2020 | $38m | last listed Q2 2025 | |
| ExodusPoint Capital Management LP | Q1 2019 | $19m | last listed Q4 2025 |
What STE 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 STE →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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