Ticker · CUSIP 038336103
Holders (tracked)
13
Combined shares
2,863,162
Combined value
$349.19M
Last close
$130.63
Quarter
2025Q4
Price · 1Y$130.63-11.29 (-7.96%)H $160.60 · L $112.68 · Avg Vol 478K
Congress buy
$110.00$120.00$130.00$140.00$150.00$160.00VolJul 25Oct 25Jan 26Apr 26
Tracked holders · last 8 quarters
Flat over the last 8 quarters.
13142024Q12025Q4
Price is +7.1% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

26 events
  1. +74,998 shares · 2025Q4
    Position
  2. −64,364 shares · 2025Q4
    Position
  3. +112,369 shares · 2025Q4
    Position
  4. +306,662 shares · 2025Q4
    Position
  5. +157,969 shares · 2025Q4
    Position
  6. −159,986 shares · 2025Q4
    Position
  7. −189,348 shares · 2025Q4
    Position
  8. +2,912 shares · 2025Q4
    Position
  9. −552 shares · 2025Q4
    Position
  10. −18,568 shares · 2025Q4
    Position
  11. +28,500 shares · 2025Q4
    Position
  12. +746,940 shares · 2025Q4
    Position
  13. −4,814 shares · 2025Q4
    Position
  14. −63,115 shares · 2025Q3
    Position
  15. +131,867 shares · 2025Q3
    Position
  16. −73,539 shares · 2025Q3
    Position
  17. −29,194 shares · 2025Q3
    Position
  18. +73,185 shares · 2025Q3
    Position
  19. +3,540 shares · 2025Q3
    Position
  20. −233 shares · 2025Q3
    Position
  21. +22,000 shares · 2025Q3
    Position
  22. −755,492 shares · 2025Q3
    Position
  23. +3,644 shares · 2025Q3
    Position
  24. +18,568 shares · 2025Q3
    Position
  25. −3,472 shares · 2025Q3
    Position
  26. −11,193 shares · 2024Q3
    Position

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of ATR…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$115.02+13.6%$6.9M
Ken Griffin (Citadel Advisors)2016Q1$124.44+5.0%$5.2M
Ken Griffin (Citadel Advisors)2016Q1$124.44+5.0%$5.2M
Two Sigma Investments2017Q1$125.82+3.8%$26.1M
Ken Fisher (Fisher Asset Mgmt)2018Q3$127.28+2.6%$3.0M
Wellington Management2016Q1$127.69+2.3%$1.8M
D.E. Shaw & Co.2016Q1$127.71+2.3%$25.8M
Renaissance Technologies2016Q1$131.92-1.0%$18.8M
AQR Capital Management2016Q1$135.50-3.6%$110.2M
Jeremy Grantham (GMO)2016Q1$135.65-3.7%$30.2M
Paul Tudor Jones (Tudor Investment)2016Q1$143.12-8.7%$9.8M
Izzy Englander (Millennium Mgmt)2016Q1$151.47-13.8%$27.8M
Norges Bank (Norway SWF)2016Q1$7235.55-98.2%$97.6M

Who moved on this name in 2025Q4

Position changes 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
13
$68.38B
2022Q2
12
$60.07B
2022Q3
12
$629.5M
2022Q4
14
$744.1M
2023Q1
14
$790.7M
2023Q2
15
$888.3M
2023Q3
14
$945.7M
2023Q4
14
$922.8M
2024Q1
14
$1.18B
2024Q2
15
$1.16B
2024Q3
13
$298.3M
2024Q4
12
$228.9M
2025Q1
13
$167.7M
2025Q2
14
$379.5M
2025Q3
13
$247.2M
2025Q4
13
$349.2M
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-06-24Lisa McClainBuy$1K – $15KPDF ↗

Who owns ATR

13 super-investors · 2025Q4
Tracked stake
2.86M
shares
Combined value
$349M
% of shares outstanding
shares-out unknown
Quarter action mix
New2Added5Trim6
#ManagerSharesValue
1AQR Capital Management843.6K$103M
2Norges Bank
Norway SWF
746.9K$91M
3Jeremy Grantham
GMO
231.0K$28M
4Izzy Englander
Millennium Mgmt
212.5K$26M
5Two Sigma Investments199.7K$24M
6D.E. Shaw & Co.197.1K$24M
7Renaissance Technologies143.6K$18M
8Ken Griffin
Citadel Advisors
83.6K$10M
9Paul Tudor Jones
Tudor Investment
75.0K$9M
10T. Rowe Price53.0K$6M
11Ken Griffin
Citadel Advisors
39.9K$5M
12Ken Fisher
Fisher Asset Mgmt
23.1K$3M
13Wellington Management14.1K$2M

Recent moves

20 transactions
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