Ticker · CUSIP 98978V103
Holders (tracked)
25
Combined shares
23,822,775
Combined value
$2.83B
Last close
$119.04
Quarter
2025Q4
Tracked holders · last 8 quarters
+5 vs previous quarter over the last 8.
25232024Q12025Q4
Price is +0.0% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events
  1. +2,853,563 shares · 2025Q4
    13F
  2. +67,696 shares · 2025Q4
    13F
  3. −382,807 shares · 2025Q4
    13F
  4. −735,936 shares · 2025Q4
    13F
  5. +1,335 shares · 2025Q4
    13F
  6. −69,022 shares · 2025Q4
    13F
  7. −2,874 shares · 2025Q4
    13F
  8. +18,681 shares · 2025Q4
    13F
  9. −8,200 shares · 2025Q4
    13F
  10. +252,725 shares · 2025Q4
    13F
  11. +56,967 shares · 2025Q4
    13F
  12. −1,500 shares · 2025Q4
    13F
  13. +148,448 shares · 2025Q4
    13F
  14. +167,700 shares · 2025Q4
    13F
  15. +5,837,110 shares · 2025Q4
    13F
  16. +599 shares · 2025Q4
    13F
  17. −1,599 shares · 2025Q4
    13F
  18. +150,845 shares · 2025Q4
    13F
  19. −342,815 shares · 2025Q3
    13F
  20. +314,047 shares · 2025Q3
    13F
  21. −845,203 shares · 2025Q3
    13F
  22. +99,778 shares · 2025Q3
    13F
  23. +829,910 shares · 2025Q3
    13F
  24. +64,019 shares · 2025Q3
    13F
  25. −348,257 shares · 2025Q3
    13F
  26. −5,000 shares · 2025Q3
    13F
  27. −1,405 shares · 2025Q3
    13F
  28. +61,567 shares · 2025Q3
    13F
  29. +1,010 shares · 2025Q3
    13F
  30. +162,300 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ZTS…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$43.89+171.2%$153.8M
George Soros (Soros Fund Mgmt)2016Q1$44.33+168.5%$17.7M
Mario Gabelli (GAMCO)2016Q1$83.91+41.9%$1.5M
Renaissance Technologies2016Q1$121.70-2.2%$50.5M
Baillie Gifford & Co2025Q4$125.82-5.4%$18.0M
Izzy Englander (Millennium Mgmt)2016Q1$126.06-5.6%$6.3M
Izzy Englander (Millennium Mgmt)2016Q1$126.06-5.6%$6.3M
Izzy Englander (Millennium Mgmt)2016Q1$126.06-5.6%$6.3M
Paul Tudor Jones (Tudor Investment)2016Q1$126.51-5.9%$10.0M
Paul Tudor Jones (Tudor Investment)2016Q1$126.51-5.9%$10.0M
Paul Tudor Jones (Tudor Investment)2016Q1$126.51-5.9%$10.0M
Ken Griffin (Citadel Advisors)2016Q3$129.60-8.1%$137.5M
Ken Griffin (Citadel Advisors)2016Q3$129.60-8.1%$137.5M
Ken Griffin (Citadel Advisors)2016Q3$129.60-8.1%$137.5M
D.E. Shaw & Co.2016Q1$146.39-18.7%$250K
D.E. Shaw & Co.2016Q1$146.39-18.7%$250K
Ray Dalio (Bridgewater Associates)2020Q4$146.85-18.9%$21.7M
Wellington Management2016Q1$147.25-19.2%$1.36B
Steve Cohen (Point72)2016Q1$147.70-19.4%$202K
Steve Cohen (Point72)2016Q1$147.70-19.4%$202K
Two Sigma Investments2016Q1$148.48-19.8%$13.2M
Ken Fisher (Fisher Asset Mgmt)2018Q4$150.09-20.7%$354K
Jeremy Grantham (GMO)2025Q1$154.58-23.0%$1.1M
AQR Capital Management2016Q1$159.25-25.2%$95.6M
Norges Bank (Norway SWF)2016Q1$8997.23-98.7%$694.8M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
20
$894.01B
2022Q2
23
$817.17B
2022Q3
22
$722.4M
2022Q4
23
$8.68B
2023Q1
23
$9.87B
2023Q2
21
$9.88B
2023Q3
20
$7.49B
2023Q4
22
$8.52B
2024Q1
23
$9.58B
2024Q2
23
$9.32B
2024Q3
20
$1.96B
2024Q4
21
$1.36B
2025Q1
20
$1.41B
2025Q2
25
$2.99B
2025Q3
20
$1.97B
2025Q4
25
$2.83B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2026-03-13Gilbert CisnerosSell (P)$1K – $15KPDF ↗
2026-02-10Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-12-19Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-11-18Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-10-06Rick LarsenSell$1K – $15KPDF ↗
2025-08-05Gilbert CisnerosSell (P)$1K – $15KPDF ↗
2025-08-04Lisa McClainSell$1K – $15KPDF ↗
2025-07-22Lisa McClainBuy$1K – $15KPDF ↗
2025-05-15Rob BresnahanBuy$1K – $15KPDF ↗
2025-04-08Rob BresnahanSell$1K – $15KPDF ↗
2025-04-01Julie JohnsonSell$1K – $15KPDF ↗
2025-03-03Julie JohnsonSell$1K – $15KPDF ↗

Who owns ZTS

25 super-investors · 2025Q4
Tracked stake
23.82M
shares
Combined value
$2.83B
% of shares outstanding
shares-out unknown
Quarter action mix
New6Added9Trim10
#ManagerSharesValue
1Wellington Management11.39M$1.43B
2Norges Bank
Norway SWF
5.84M$734M
3D.E. Shaw & Co.1.21M$153M
4Ken Griffin
Citadel Advisors
1.16M$145M
5AQR Capital Management802.7K$101M
6Renaissance Technologies424.6K$53M
7Izzy Englander
Millennium Mgmt
348.3K$44M
8Ken Griffin
Citadel Advisors
301.2K$38M
9Ray Dalio
Bridgewater Associates
182.6K$23M
10Ken Griffin
Citadel Advisors
165.4K$21M
11Baillie Gifford & Co150.8K$19M
12George Soros
Soros Fund Mgmt
148.4K$19M
13Two Sigma Investments110.7K$14M
14Paul Tudor Jones
Tudor Investment
84.3K$11M
15Paul Tudor Jones
Tudor Investment
67.7K$9M
16Izzy Englander
Millennium Mgmt
53.2K$7M
17Paul Tudor Jones
Tudor Investment
38.0K$5M
18Izzy Englander
Millennium Mgmt
17.8K$2M
19Mario Gabelli
GAMCO
12.9K$2M
20Jeremy Grantham
GMO
9.1K$1M
21Steve Cohen
Point72
4.0K$503K
22Ken Fisher
Fisher Asset Mgmt
3.0K$374K
23D.E. Shaw & Co.2.1K$264K
24Steve Cohen
Point72
1.7K$214K
25T. Rowe Price1.29M$163K

Recent moves

20 transactions
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