Ticker · CUSIP 00508Y102

AYI

ACUITY BRANDS INC
Industrials·Electrical Equipment & Parts
···Share
Holders (tracked)
16
Combined shares
3,108,724
Combined value
$968.07M
Last close
$283.46
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
16162024Q12025Q4
Price is -9.0% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

29 events
  1. O'Shaughnessy Laura
    2026-04-08
    Bought $283.0K @ $282.98
    Insider buy
  2. Wellington Management trimmed2026-02-17
    −107,660 shares · 2025Q4
    13F
  3. Ken Griffin (Citadel Advisors) added2026-02-17
    +47,027 shares · 2025Q4
    13F
  4. AQR Capital Management added2026-02-17
    +29,355 shares · 2025Q4
    13F
  5. D.E. Shaw & Co. added2026-02-17
    +5,883 shares · 2025Q4
    13F
  6. Jeremy Grantham (GMO) opened position2026-02-17
    +9,081 shares · 2025Q4
    13F
  7. Two Sigma Investments added2026-02-17
    +1,291 shares · 2025Q4
    13F
  8. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −83,214 shares · 2025Q4
    13F
  9. Steve Cohen (Point72) added2026-02-17
    +71,388 shares · 2025Q4
    13F
  10. T. Rowe Price added2026-02-17
    +117,153 shares · 2025Q4
    13F
  11. Ray Dalio (Bridgewater Associates) exited2026-02-13
    −18,781 shares · 2025Q4
    13F
  12. Renaissance Technologies trimmed2026-02-12
    −39,900 shares · 2025Q4
    13F
  13. Norges Bank (Norway SWF) opened position2026-02-10
    +385,365 shares · 2025Q4
    13F
  14. Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09
    −21,177 shares · 2025Q4
    13F
  15. Mario Gabelli (GAMCO) trimmed2026-02-05
    −365 shares · 2025Q4
    13F
  16. Paul Tudor Jones (Tudor Investment) exited2025-12-09
    −28,110 shares · 2025Q3
    13F
  17. AQR Capital Management added2025-11-14
    +42,945 shares · 2025Q3
    13F
  18. Izzy Englander (Millennium Mgmt) added2025-11-14
    +283,203 shares · 2025Q3
    13F
  19. Steve Cohen (Point72) added2025-11-14
    +95,643 shares · 2025Q3
    13F
  20. Two Sigma Investments trimmed2025-11-14
    −4,171 shares · 2025Q3
    13F
  21. D.E. Shaw & Co. trimmed2025-11-14
    −29,807 shares · 2025Q3
    13F
  22. T. Rowe Price added2025-11-14
    +257,766 shares · 2025Q3
    13F
  23. Wellington Management trimmed2025-11-14
    −34,310 shares · 2025Q3
    13F
  24. Renaissance Technologies trimmed2025-11-13
    −15,600 shares · 2025Q3
    13F
  25. Norges Bank (Norway SWF) exited2025-11-13
    −387,460 shares · 2025Q3
    13F
  26. Ray Dalio (Bridgewater Associates) added2025-11-13
    +10,470 shares · 2025Q3
    13F
  27. Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
    −6,685 shares · 2025Q3
    13F
  28. Mario Gabelli (GAMCO) trimmed2025-11-12
    −100 shares · 2025Q3
    13F
  29. Norges Bank (Norway SWF) added2025-11-12
    +4,016 shares · 2024Q3
    13F

Insider activity

Last 30 days
Net (open-market)
$283.0K
Buys
1 · $283.0K
Sells
0 · $0
Unique insiders
1
DateInsiderCodeSharesPriceValue
04-08O'Shaughnessy Laura
Director
P1,000$282.98$283.0K
View full insider history for AYI →
Follow-the-investor returns
If you'd copied each holder of AYI…
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$5.07+5492.1%$119.2M
Mario Gabelli (GAMCO)2016Q1$195.85+44.7%$597K
Wellington Management2016Q1$205.98+37.6%$223.4M
Ken Fisher (Fisher Asset Mgmt)2017Q4$209.61+35.2%$95.8M
AQR Capital Management2016Q1$243.20+16.6%$92.6M
D.E. Shaw & Co.2016Q2$247.57+14.5%$9.6M
Two Sigma Investments2016Q1$269.82+5.1%$2.3M
Tom Gayner (Markel Group)2024Q4$272.21+4.1%$2.8M
Renaissance Technologies2016Q2$280.93+0.9%$2.6M
Izzy Englander (Millennium Mgmt)2016Q2$320.22-11.5%$138.3M
Jeremy Grantham (GMO)2020Q3$320.95-11.7%$2.6M
Steve Cohen (Point72)2016Q4$335.43-15.5%$67.1M
Ken Griffin (Citadel Advisors)2016Q1$359.46-21.1%$1.2M
Ken Griffin (Citadel Advisors)2016Q1$359.46-21.1%$1.2M
Ken Griffin (Citadel Advisors)2016Q1$359.46-21.1%$1.2M
Norges Bank (Norway SWF)2016Q1$32064.05-99.1%$109.2M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to6
Trimmed5
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
14
$107.84B
2022Q2
13
$66.38B
2022Q3
16
$62.6M
2022Q4
17
$823.5M
2023Q1
17
$910.9M
2023Q2
19
$886.3M
2023Q3
16
$778.7M
2023Q4
14
$875.1M
2024Q1
16
$1.42B
2024Q2
17
$1.46B
2024Q3
15
$712.1M
2024Q4
17
$384.0M
2025Q1
16
$535.2M
2025Q2
17
$785.4M
2025Q3
15
$835.9M
2025Q4
16
$968.1M

Who owns AYI

16 super-investors · 2025Q4
Tracked stake
3.11M
shares
Combined value
$968M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added8Trim5Held1
#ManagerSharesValue
1Wellington Management788.0K$284M
2Izzy Englander
Millennium Mgmt
487.8K$176M
3Norges Bank
Norway SWF
385.4K$139M
4Ken Fisher
Fisher Asset Mgmt
338.1K$122M
5AQR Capital Management326.8K$118M
6Steve Cohen
Point72
236.6K$85M
7Ken Griffin
Citadel Advisors
48.8K$18M
8D.E. Shaw & Co.33.9K$12M
9Tom Gayner
Markel Group
9.8K$4M
10Renaissance Technologies9.1K$3M
11Jeremy Grantham
GMO
9.1K$3M
12Two Sigma Investments8.2K$3M
13Ken Griffin
Citadel Advisors
4.2K$2M
14Mario Gabelli
GAMCO
2.1K$758K
15Ken Griffin
Citadel Advisors
600$216K
16T. Rowe Price420.4K$151K

Recent moves

20 transactions
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