Ticker · CUSIP 031100100
Holders (tracked)
16
Combined shares
21,563,879
Combined value
$2.81B
Last close
$230.24
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
16192024Q12025Q4
Price is +76.8% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

29 events
  1. −1,937,467 shares · 2025Q4
    13F
  2. −6,611 shares · 2025Q4
    13F
  3. +492,353 shares · 2025Q4
    13F
  4. +555,064 shares · 2025Q4
    13F
  5. +1,100 shares · 2025Q4
    13F
  6. +332,715 shares · 2025Q4
    13F
  7. +2,110,818 shares · 2025Q4
    13F
  8. −32,488 shares · 2025Q4
    13F
  9. −290,109 shares · 2025Q4
    13F
  10. −31,589 shares · 2025Q4
    13F
  11. −101,300 shares · 2025Q4
    13F
  12. −16,549 shares · 2025Q4
    13F
  13. +4,049,351 shares · 2025Q4
    13F
  14. −15,890 shares · 2025Q4
    13F
  15. −179,281 shares · 2025Q3
    13F
  16. +247,922 shares · 2025Q3
    13F
  17. +441,365 shares · 2025Q3
    13F
  18. +415,141 shares · 2025Q3
    13F
  19. +169,523 shares · 2025Q3
    13F
  20. +291,980 shares · 2025Q3
    13F
  21. −768,943 shares · 2025Q3
    13F
  22. −199,533 shares · 2025Q3
    13F
  23. −3,595,341 shares · 2025Q3
    13F
  24. −18,500 shares · 2025Q3
    13F
  25. +36,197 shares · 2025Q3
    13F
  26. −3,600 shares · 2025Q3
    13F
  27. −12,570 shares · 2025Q3
    13F
  28. +16,220 shares · 2025Q3
    13F
  29. −17,705 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of AME…
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$2.13+10726.1%$1.82B
Mario Gabelli (GAMCO)2016Q1$49.98+360.7%$139.7M
Steve Cohen (Point72)2016Q3$167.80+37.2%$28.8M
Cathie Wood (ARK Invest)2016Q4$168.31+36.8%$1.5M
AQR Capital Management2016Q3$173.97+32.3%$206.6M
Wellington Management2016Q1$174.24+32.1%$646.4M
Renaissance Technologies2016Q1$176.89+30.2%$35.6M
Izzy Englander (Millennium Mgmt)2016Q1$180.54+27.5%$187.2M
Paul Tudor Jones (Tudor Investment)2016Q1$180.94+27.2%$253K
Two Sigma Investments2016Q1$182.20+26.4%$232.7M
Ray Dalio (Bridgewater Associates)2016Q2$185.90+23.9%$1.1M
D.E. Shaw & Co.2016Q1$191.29+20.4%$328.5M
Ken Griffin (Citadel Advisors)2016Q1$205.11+12.3%$3.0M
Ken Griffin (Citadel Advisors)2016Q1$205.11+12.3%$3.0M
Ken Griffin (Citadel Advisors)2016Q1$205.11+12.3%$3.0M
Norges Bank (Norway SWF)2016Q1$21145.88-98.9%$932.3M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to4
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
17
$321.59B
2022Q2
18
$359.46B
2022Q3
21
$440.2M
2022Q4
19
$3.33B
2023Q1
21
$3.56B
2023Q2
17
$4.17B
2023Q3
16
$3.57B
2023Q4
14
$3.87B
2024Q1
19
$4.49B
2024Q2
17
$4.07B
2024Q3
17
$1.20B
2024Q4
15
$1.19B
2025Q1
15
$533.9M
2025Q2
16
$1.52B
2025Q3
14
$1.25B
2025Q4
16
$2.81B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2026-02-10Gilbert CisnerosSell (P)$1K – $15KPDF ↗
2026-01-09Gilbert CisnerosBuy$1K – $15KPDF ↗
2025-08-18Dan NewhouseBuy$1K – $15KPDF ↗
2025-04-08Rob BresnahanSell$1K – $15KPDF ↗
2025-01-24Valerie HoyleSell$1K – $15KPDF ↗
2024-10-29Valerie HoyleBuy$1K – $15KPDF ↗

Who owns AME

16 super-investors · 2025Q4
Tracked stake
21.56M
shares
Combined value
$2.81B
% of shares outstanding
shares-out unknown
Quarter action mix
New2Added6Trim8
#ManagerSharesValue
1Norges Bank
Norway SWF
4.05M$831M
2Wellington Management2.81M$576M
3Ken Griffin
Citadel Advisors
1.74M$356M
4D.E. Shaw & Co.1.43M$293M
5Two Sigma Investments1.01M$207M
6AQR Capital Management897.4K$184M
7Izzy Englander
Millennium Mgmt
812.9K$167M
8Mario Gabelli
GAMCO
606.9K$125M
9Renaissance Technologies154.7K$32M
10Steve Cohen
Point72
125.0K$26M
11Ken Griffin
Citadel Advisors
19.9K$4M
12Ken Griffin
Citadel Advisors
13.0K$3M
13T. Rowe Price7.89M$2M
14Cathie Wood
ARK Invest
6.4K$1M
15Ray Dalio
Bridgewater Associates
4.6K$946K
16Paul Tudor Jones
Tudor Investment
1.1K$226K

Recent moves

20 transactions
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