Ticker · CUSIP 047649108

ATKR

ATKORE INC
Industrials·Electrical Equipment & Parts
···Share
Holders (tracked)
13
Combined shares
957,046
Combined value
$58.46M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
13132024Q12025Q4

SEC event timeline

21 events
  1. Ken Griffin (Citadel Advisors) added2026-02-17
    +49,171 shares · 2025Q4
    13F
  2. Two Sigma Investments added2026-02-17
    +38,333 shares · 2025Q4
    13F
  3. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −20,189 shares · 2025Q4
    13F
  4. T. Rowe Price trimmed2026-02-17
    −2,637 shares · 2025Q4
    13F
  5. Wellington Management trimmed2026-02-17
    −25,606 shares · 2025Q4
    13F
  6. D.E. Shaw & Co. trimmed2026-02-17
    −38,147 shares · 2025Q4
    13F
  7. Jeremy Grantham (GMO) trimmed2026-02-17
    −3,688 shares · 2025Q4
    13F
  8. AQR Capital Management trimmed2026-02-17
    −4,914 shares · 2025Q4
    13F
  9. Norges Bank (Norway SWF) opened position2026-02-10
    +89,623 shares · 2025Q4
    13F
  10. Mario Gabelli (GAMCO) trimmed2026-02-05
    −700 shares · 2025Q4
    13F
  11. Two Sigma Investments added2025-11-14
    +113,757 shares · 2025Q3
    13F
  12. D.E. Shaw & Co. added2025-11-14
    +84,437 shares · 2025Q3
    13F
  13. Wellington Management trimmed2025-11-14
    −69,300 shares · 2025Q3
    13F
  14. AQR Capital Management trimmed2025-11-14
    −62,581 shares · 2025Q3
    13F
  15. Lee Ainslie (Maverick Capital) exited2025-11-14
    −14,371 shares · 2025Q3
    13F
  16. T. Rowe Price added2025-11-14
    +1,155 shares · 2025Q3
    13F
  17. Izzy Englander (Millennium Mgmt) added2025-11-14
    +25,166 shares · 2025Q3
    13F
  18. Norges Bank (Norway SWF) exited2025-11-13
    −6,623 shares · 2025Q3
    13F
  19. Jeremy Grantham (GMO) trimmed2025-11-13
    −8,692 shares · 2025Q3
    13F
  20. Norges Bank (Norway SWF) trimmed2025-11-12
    −11,675 shares · 2024Q3
    13F
  21. Mario Gabelli (GAMCO) trimmed2025-11-12
    −550 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for ATKR →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions1
Added to2
Trimmed7
Exited0
—

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
12
$55.89B
2022Q2
12
$38.37B
2022Q3
15
$32.1M
2022Q4
15
$514.5M
2023Q1
18
$567.9M
2023Q2
15
$803.7M
2023Q3
15
$744.2M
2023Q4
12
$894.0M
2024Q1
13
$1.06B
2024Q2
13
$740.5M
2024Q3
17
$206.9M
2024Q4
16
$148.5M
2025Q1
15
$102.9M
2025Q2
14
$60.1M
2025Q3
12
$56.0M
2025Q4
13
$58.5M

Who owns ATKR

13 super-investors · 2025Q4
Tracked stake
957.0K
shares
Combined value
$58M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New1Added4Trim8
#ManagerSharesValue
1Two Sigma Investments219.3K$14M
2Wellington Management188.3K$12M
3Ken Griffin
Citadel Advisors
147.7K$9M
4D.E. Shaw & Co.113.1K$7M
5Norges Bank
Norway SWF
89.6K$6M
6AQR Capital Management49.7K$3M
7Ken Griffin
Citadel Advisors
49.2K$3M
8Izzy Englander
Millennium Mgmt
33.2K$2M
9Ken Griffin
Citadel Advisors
17.2K$1M
10Jeremy Grantham
GMO
7.1K$446K
11D.E. Shaw & Co.5.0K$316K
12Mario Gabelli
GAMCO
4.9K$309K
13T. Rowe Price32.8K$2K

Recent moves

20 transactions
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