Ticker · CUSIP 831865209
Holders (tracked)
15
Combined shares
5,030,119
Combined value
$322.34M
Last close
$63.28
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
15142024Q12025Q4
Price is -1.3% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

27 events
  1. +84,274 shares · 2025Q4
    13F
  2. −276,310 shares · 2025Q4
    13F
  3. −5,233 shares · 2025Q4
    13F
  4. +617,179 shares · 2025Q4
    13F
  5. +52,007 shares · 2025Q4
    13F
  6. −207,101 shares · 2025Q4
    13F
  7. −82,190 shares · 2025Q4
    13F
  8. −17,809 shares · 2025Q4
    13F
  9. +344,917 shares · 2025Q4
    13F
  10. +18,989 shares · 2025Q4
    13F
  11. +122,542 shares · 2025Q4
    13F
  12. +224,800 shares · 2025Q4
    13F
  13. +1,451,866 shares · 2025Q4
    13F
  14. −39,598 shares · 2025Q4
    13F
  15. −201,360 shares · 2025Q3
    13F
  16. −283,710 shares · 2025Q3
    13F
  17. +188,380 shares · 2025Q3
    13F
  18. −1,061,715 shares · 2025Q3
    13F
  19. −10,198 shares · 2025Q3
    13F
  20. −47,636 shares · 2025Q3
    13F
  21. −7,242 shares · 2025Q3
    13F
  22. +76,251 shares · 2025Q3
    13F
  23. −207,200 shares · 2025Q3
    13F
  24. −1,402,144 shares · 2025Q3
    13F
  25. −2,429 shares · 2025Q3
    13F
  26. −546 shares · 2025Q3
    13F
  27. −9,243 shares · 2024Q3
    13F

Insider activity

Last 30 days
Net (open-market)
$0
Buys
0 · $0
Sells
0 · $0
Unique insiders
5
DateInsiderCodeSharesPriceValue
04-13MARTIN LOIS M
Director
A2,262$66.32$150.0K
04-13MAPES CHRISTOPHER L
Director
A2,262$66.32$150.0K
04-13SMITH MARK D
Director
A2,262$66.32$150.0K
04-13Fister Todd W
Director
A2,262$66.32$150.0K
04-13Kadri Ilham
Director
A2,262$66.32$150.0K
Follow-the-investor returns
If you'd copied each holder of AOS…
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$58.75+7.7%$13.3M
Renaissance Technologies2016Q1$63.69-0.6%$40.0M
Mario Gabelli (GAMCO)2016Q1$63.87-0.9%$4.5M
Jeremy Grantham (GMO)2020Q3$64.73-2.2%$3.2M
Wellington Management2016Q1$66.03-4.2%$21.8M
Two Sigma Investments2016Q3$66.35-4.6%$3.3M
Paul Tudor Jones (Tudor Investment)2016Q2$66.81-5.3%$5.3M
Paul Tudor Jones (Tudor Investment)2016Q2$66.81-5.3%$5.3M
Ken Griffin (Citadel Advisors)2016Q3$67.33-6.0%$12.0M
Ken Griffin (Citadel Advisors)2016Q3$67.33-6.0%$12.0M
Ken Griffin (Citadel Advisors)2016Q3$67.33-6.0%$12.0M
Ray Dalio (Bridgewater Associates)2019Q4$69.14-8.5%$12.6M
AQR Capital Management2016Q1$69.73-9.3%$81.0M
Izzy Englander (Millennium Mgmt)2016Q1$71.81-11.9%$26.6M
Norges Bank (Norway SWF)2016Q1$73.39-13.8%$91.9M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions4
Trimmed3
Exited3

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
14
$79.40B
2022Q2
13
$67.10B
2022Q3
17
$58.0M
2022Q4
16
$721.2M
2023Q1
16
$1.07B
2023Q2
17
$1.14B
2023Q3
16
$1.11B
2023Q4
13
$1.28B
2024Q1
14
$1.43B
2024Q2
14
$1.22B
2024Q3
13
$477.4M
2024Q4
11
$389.7M
2025Q1
16
$300.9M
2025Q2
17
$371.1M
2025Q3
13
$174.8M
2025Q4
15
$322.3M
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-09-25Julie JohnsonSell$1K – $15KPDF ↗
2025-04-16April McClain DelaneySell$1K – $15KPDF ↗
2025-04-10April McClain DelaneySell (P)$1K – $15KPDF ↗
2025-03-06April McClain DelaneySell (P)$1K – $15KPDF ↗
2025-02-25Rob BresnahanSell$1K – $15KPDF ↗

Who owns AOS

15 super-investors · 2025Q4
Tracked stake
5.03M
shares
Combined value
$322M
% of shares outstanding
shares-out unknown
Quarter action mix
New5Added4Trim5Held1
#ManagerSharesValue
1Norges Bank
Norway SWF
1.45M$97M
2AQR Capital Management1.28M$86M
3Renaissance Technologies632.7K$42M
4Izzy Englander
Millennium Mgmt
419.8K$28M
5Wellington Management344.9K$23M
6Ray Dalio
Bridgewater Associates
198.8K$13M
7Ken Griffin
Citadel Advisors
189.5K$13M
8Paul Tudor Jones
Tudor Investment
84.3K$6M
9Mario Gabelli
GAMCO
70.5K$5M
10Two Sigma Investments52.0K$3M
11Jeremy Grantham
GMO
50.8K$3M
12Ken Griffin
Citadel Advisors
25.3K$2M
13Ken Griffin
Citadel Advisors
15.4K$1M
14Paul Tudor Jones
Tudor Investment
4.3K$288K
15T. Rowe Price210.7K$14K

Recent moves

20 transactions
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