- Quarter end
- 31 Dec 2025
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 22 Jan 2026
- Managers listing it
- 37
- at least, of 95 tracked, among listed positions
- Comparable managers
- 92
- filed both Q3 2025 and Q4 2025; 20 listed it in both
- Shares listed
- 44,060,735
- combined, among listed positions
- Reported value
- $5.5bn
- combined, at the quarter end
Among the 92 comparable managers: 23 buyers (opened or added shares) and 22 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +445,886.
Managers listing ZTS in Q4 2025
37 of 37 holders
Largest increases and reductions, by shares
Increases
- Wellington Management Group LLPexisting position · 11,394,986 shares now+2,853,563
- Janus Henderson Group Ltdexisting position · 3,884,112 shares now+1,593,375
- Voloridge Investment Management LLCexisting position · 1,144,610 shares now+829,415
- Susquehanna International Group LLPexisting position · 973,357 shares now+805,941
- Arrowstreet Capital LPexisting position · 3,038,437 shares now+340,610
Reductions
- Polen Capital Management LLCexisting position · 5,562,669 shares now-1,954,242
- AQR Capital Management LLCexisting position · 802,731 shares now-735,936
- AllianceBernstein LPexisting position · 3,700,421 shares now-540,936
- Neuberger Berman Group LLCexisting position · 1,184,972 shares now-458,592
- D. E. Shaw & Co.existing position · 1,214,747 shares now-382,807
New positions and exits
New (5)
Exited (8)
- Artisan Partners LPwas $147m
- Marshall Wace LLPwas $87m
- Capital World Investorswas $58m
- Quantbot Technologies LPwas $2.3m
- ExodusPoint Capital Management LPwas $2.2m
- PDT Partners LLCwas $1.2m
- Element Capital Management LLCwas $511k
- Dodge & Coxwas $219k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q2 2013 | 21 | $2.9bn | n.a. | n.a. |
| Q3 2013 | 21 | $2.8bn | n.a. | n.a. |
| Q4 2013 | 17 | $2.8bn | n.a. | n.a. |
| Q1 2014 | 18 | $2.8bn | n.a. | n.a. |
| Q2 2014 | 15 | $3.2bn | n.a. | n.a. |
| Q3 2014 | 15 | $3.9bn | n.a. | n.a. |
| Q4 2014 | 24 | $5.2bn | n.a. | n.a. |
| Q1 2015 | 28 | $5.0bn | n.a. | n.a. |
| Q2 2015 | 27 | $5.1bn | n.a. | n.a. |
| Q3 2015 | 29 | $4.7bn | n.a. | n.a. |
| Q4 2015 | 24 | $5.5bn | n.a. | n.a. |
| Q1 2016 | 22 | $4.7bn | n.a. | n.a. |
| Q2 2016 | 20 | $4.7bn | n.a. | n.a. |
| Q3 2016 | 16 | $4.5bn | n.a. | n.a. |
| Q4 2016 | 17 | $4.6bn | n.a. | n.a. |
| Q1 2017 | 20 | $4.1bn | n.a. | n.a. |
| Q2 2017 | 19 | $5.0bn | n.a. | n.a. |
| Q3 2017 | 22 | $5.0bn | n.a. | n.a. |
| Q4 2017 | 17 | $5.2bn | n.a. | n.a. |
| Q1 2018 | 21 | $5.2bn | n.a. | n.a. |
| Q2 2018 | 25 | $5.5bn | n.a. | n.a. |
| Q3 2018 | 27 | $6.3bn | n.a. | n.a. |
| Q4 2018 | 31 | $6.6bn | n.a. | n.a. |
| Q1 2019 | 27 | $8.4bn | n.a. | n.a. |
| Q2 2019 | 30 | $8.9bn | n.a. | n.a. |
| Q3 2019 | 27 | $9.9bn | n.a. | n.a. |
| Q4 2019 | 25 | $10.5bn | n.a. | n.a. |
| Q1 2020 | 27 | $9.4bn | n.a. | n.a. |
| Q2 2020 | 23 | $10.8bn | n.a. | n.a. |
| Q3 2020 | 27 | $13.3bn | n.a. | n.a. |
| Q4 2020 | 25 | $13.7bn | n.a. | n.a. |
| Q1 2021 | 30 | $13.9bn | n.a. | n.a. |
| Q2 2021 | 28 | $15.8bn | n.a. | n.a. |
| Q3 2021 | 29 | $16.6bn | n.a. | n.a. |
| Q4 2021 | 29 | $21.1bn | n.a. | n.a. |
| Q1 2022 | 36 | $17.0bn | n.a. | n.a. |
| Q2 2022 | 37 | $15.4bn | n.a. | n.a. |
| Q3 2022 | 37 | $12.9bn | n.a. | n.a. |
| Q4 2022 | 30 | $12.0bn | n.a. | n.a. |
| Q1 2023 | 24 | $13.3bn | n.a. | n.a. |
| Q2 2023 | 26 | $13.3bn | n.a. | n.a. |
| Q3 2023 | 23 | $13.2bn | n.a. | n.a. |
| Q4 2023 | 19 | $14.5bn | 7 | 12 |
| Q1 2024 | 35 | $12.2bn | 25 | 11 |
| Q2 2024 | 24 | $10.1bn | 12 | 18 |
| Q3 2024 | 24 | $9.8bn | 13 | 11 |
| Q4 2024 | 27 | $7.7bn | 15 | 13 |
| Q1 2025 | 28 | $7.2bn | 17 | 10 |
| Q2 2025 | 26 | $6.0bn | 15 | 12 |
| Q3 2025 | 27 | $5.9bn | 20 | 7 |
| Q4 2025 | 21 | $5.1bn | 23 | 22 |
| Q1 2026 | 21 | $4.4bn | 13 | 26 |
| Q2 2026 | 23 | $2.7bn | 27 | 14 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
ZTS and LLY →ZTS and JNJ →ZTS and VRTX →Choose a stock to compare with ZTS →
How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own ZTS, latest filings →Back to the 13F Explorer →