ACUITY BRANDS INC (AYI) Stock Institutional Trading Activity


ACUITY BRANDS INC (AYI) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Durable Capital Partners, Renaissance Technologies LLC, Polen Capital Management, Sequoia Financial Advisors, and Vulcan Value Partners. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2020Renaissance Technologies LLCSell-57,800923,916$88,456
Q1 2020Atlantic Investment ManagementSell-2,8309,000$771
Q1 2020Vulcan Value PartnersSell-31,908222,672$19,074
Q1 2020Renaissance Technologies LLCSell-41,400981,716$84,094
Q4 2019Vulcan Value PartnersSell-117,801254,580$35,132
Q4 2019Renaissance Technologies LLCBuy114,1161,023,116$141,190
Q3 2019Muhlenkamp & CoBuy1042,970$5,792
Q3 2019Vulcan Value PartnersSell-39,213372,381$50,193
Q3 2019Renaissance Technologies LLCBuy284,400909,000$122,524
Q2 2019Atlantic Investment ManagementSell-16,17011,830$1,631
Q2 2019Muhlenkamp & CoSell-14142,960$5,925
Q2 2019Vulcan Value PartnersSell-93,726411,594$56,763
Q2 2019Renaissance Technologies LLCBuy282,700624,600$86,139
Q1 2019Muhlenkamp & CoSell-77243,101$5,173
Q1 2019Renaissance Technologies LLCBuy253,800341,900$41,031
Q1 2019Vulcan Value PartnersSell-49,398505,320$60,643
Q1 2019Atlantic Investment ManagementBuy28,00028,000$3,360,280
Q4 2018Renaissance Technologies LLCSell-150,50088,100$10,127
Q4 2018Vulcan Value PartnersBuy106,119554,718$63,765
Q3 2018Ariel Appreciation FundBuy61531,678$4,980
Q3 2018Muhlenkamp & CoBuy43,87343,873$6,897
Q3 2018Vulcan Value PartnersSell-439,741448,599$70,520
Q2 2018Ariel Appreciation FundBuy40031,063$3,599
Q2 2018Vulcan Value PartnersBuy432,385888,340$102,932
Q1 2018Ariel Appreciation FundBuy21,67930,663$4,268
Q1 2018Vulcan Value PartnersBuy282,915455,955$63,464
Q4 2017Ariel Appreciation FundBuy2048,984$1,581
Q4 2017Vulcan Value PartnersBuy173,040173,040$30,455
Q4 2017Renaissance Technologies LLCBuy177,900238,600$41,994
Q3 2017Ariel Appreciation FundBuy2948,780$1,504

Frequently asked questions about AYI activity

  • Which institutional owners are buying AYI?

    Institutional owners buying AYI include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in AYI activity?

    "Buy" means an investor increased their reported position in AYI compared to the prior reporting period. This reflects growing exposure to ACUITY BRANDS INC (AYI) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in AYI increasing?

    Institutional interest in AYI can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.