ACUITY BRANDS INC (AYI) Top Institutional Shareholders
ACUITY BRANDS INC (AYI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $7.53B in AYI holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AYI tracked by InsiderSet, reporting ownership valued at approximately $858.28M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $936.20M, representing an estimated gain of +9.08% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 49% of the total disclosed AYI value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Fmr Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in ACUITY BRANDS INC (AYI).
This page ranks the largest institutional AYI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
571
Total Reported Value
$7.53B
Largest Holder
Blackrock, Inc.
Largest Position
$858.28M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
50
Funds Exiting Positions
1
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 3,062,878 | $858,279,655 | $936,199,289 | +$77,919,634 | +9.08% | |
| Fmr Llc | 0.03% | 2,355,608 | $660,088,593 | $720,015,141 | +$59,926,548 | +9.08% | |
| Vanguard Portfolio Management Llc | 0.02% | 1,414,787 | $396,451,613 | $432,443,794 | +$35,992,181 | +9.08% | |
| Vanguard Capital Management Llc | 0.01% | 1,375,687 | $385,495,011 | $420,492,488 | +$34,997,477 | +9.08% | |
| Storebrand Asset Management As | 0.12% | 2,183,349 | $362,294,783 | $667,362,455 | +$305,067,672 | +84.20% | |
| State Street Corp | 0.01% | 946,597 | $265,255,411 | $289,336,839 | +$24,081,428 | +9.08% | |
| Wellington Management Group Llp | 0.04% | 763,038 | $213,818,509 | $233,230,195 | +$19,411,686 | +9.08% | |
| American Century Companies Inc | 0.11% | 748,980 | $209,879,176 | $228,933,227 | +$19,054,051 | +9.08% | |
| Dimensional Fund Advisors Lp | 0.04% | 635,160 | $177,969,723 | $194,143,006 | +$16,173,283 | +9.09% | |
| Boston Partners | 0.18% | 599,836 | $168,050,281 | $183,345,872 | +$15,295,591 | +9.10% | |
| Geode Capital Management, Llc | 0.01% | 576,447 | $161,570,734 | $176,196,790 | +$14,626,056 | +9.05% | |
| Fuller & Thaler Asset Management, Inc. | 0.52% | 549,645 | $154,021,509 | $168,004,491 | +$13,982,982 | +9.08% | |
| Aqr Capital Management Llc | 0.05% | 435,838 | $119,960,054 | $133,218,243 | +$13,258,189 | +11.05% | |
| Fil Ltd | 0.09% | 424,614 | $118,985,335 | $129,787,515 | +$10,802,180 | +9.08% | |
| First Trust Advisors Lp | 0.08% | 378,006 | $105,924,808 | $115,541,314 | +$9,616,506 | +9.08% | |
| Durable Capital Partners | Henry Ellenbogen | 1.03% | 355,729 | $99,682,380 | $108,732,126 | +$9,049,746 | +9.08% |
| Allen Operations Llc | 14.40% | 344,100 | $96,423,702 | $105,177,606 | +$8,753,904 | +9.08% | |
| Fisher Asset Management, Llc | 0.03% | 333,488 | $93,450,067 | $101,933,942 | +$8,483,875 | +9.08% | |
| Northern Trust Corp | 0.01% | 296,333 | $83,038,435 | $90,577,145 | +$7,538,710 | +9.08% | |
| Allianz Asset Management Gmbh | 0.10% | 295,772 | $82,881,230 | $90,405,670 | +$7,524,440 | +9.08% | |
| Alyeska Investment Group, L.P. | 0.23% | 293,541 | $82,256,059 | $89,723,742 | +$7,467,683 | +9.08% | |
| Bank Of America Corp | 0.01% | 283,456 | $79,430,043 | $86,641,161 | +$7,211,118 | +9.08% | |
| Morgan Stanley | 0.00% | 264,209 | $74,037,744 | $80,758,123 | +$6,720,379 | +9.08% | |
| Boston Trust Walden Corp | 0.58% | 252,731 | $70,820,281 | $77,249,757 | +$6,429,476 | +9.08% | |
| Bank Of New York Mellon Corp | 0.01% | 229,548 | $64,324,122 | $70,163,642 | +$5,839,520 | +9.08% | |
| Alua Capital Management Lp | 6.93% | 226,168 | $63,376,797 | $69,130,511 | +$5,753,714 | +9.08% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.09% | 224,691 | $62,960,455 | $68,679,051 | +$5,718,596 | +9.08% | |
| Ubs Group Ag | 0.01% | 224,658 | $62,953,665 | $68,668,964 | +$5,715,299 | +9.08% | |
| Charles Schwab Investment Management Inc | 0.01% | 219,827 | $61,599,922 | $67,192,321 | +$5,592,399 | +9.08% | |
| Arrowstreet Capital, Limited Partnership | 0.03% | 213,801 | $59,911,316 | $65,350,414 | +$5,439,098 | +9.08% | |
| Earnest Partners Llc | 0.25% | 212,754 | $59,617,926 | $65,030,388 | +$5,412,462 | +9.08% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 211,501 | $59,266,810 | $64,647,396 | +$5,380,586 | +9.08% | |
| D. E. Shaw & Co., Inc. | 0.05% | 204,399 | $57,276,687 | $62,476,598 | +$5,199,911 | +9.08% | |
| Goldman Sachs Group Inc | 0.01% | 201,765 | $56,538,672 | $61,671,490 | +$5,132,818 | +9.08% | |
| Vanguard Fiduciary Trust Co | 0.01% | 189,446 | $53,086,558 | $57,906,064 | +$4,819,506 | +9.08% | |
| Greenstone Partners & Co., Llc | 12.75% | 179,710 | $50,358,336 | $54,930,159 | +$4,571,823 | +9.08% | |
| Seizert Capital Partners, Llc | 2.20% | 170,769 | $47,852,889 | $52,197,253 | +$4,344,364 | +9.08% | |
| Voloridge Investment Management, Llc | 0.18% | 158,207 | $44,332,766 | $48,357,552 | +$4,024,786 | +9.08% | |
| Jupiter Asset Management Ltd | 0.20% | 136,123 | $38,144,388 | $41,607,356 | +$3,462,968 | +9.08% | |
| Clark Capital Management Group, Inc. | 0.23% | 134,453 | $37,676,541 | $41,096,904 | +$3,420,363 | +9.08% | |
| Two Sigma Investments, Lp | 0.03% | 131,969 | $36,980,353 | $40,337,645 | +$3,357,292 | +9.08% | |
| Barclays Plc | 0.01% | 126,272 | $35,383,940 | $38,596,300 | +$3,212,360 | +9.08% | |
| Invesco Ltd. | 0.01% | 118,075 | $33,086,976 | $36,090,805 | +$3,003,829 | +9.08% | |
| Cooke & Bieler Lp | 0.37% | 116,510 | $32,648,432 | $35,612,447 | +$2,964,015 | +9.08% | |
| Man Group Plc | 0.06% | 111,186 | $31,156,541 | $33,985,113 | +$2,828,572 | +9.08% | |
| New York State Common Retirement Fund | 0.04% | 107,904 | $30,236,859 | $32,981,937 | +$2,745,078 | +9.08% | |
| Robeco Institutional Asset Management B.V. | 0.04% | 101,983 | $28,577,675 | $31,172,124 | +$2,594,449 | +9.08% | |
| Envestnet Asset Management Inc | 0.01% | 99,557 | $27,897,906 | $30,430,593 | +$2,532,687 | +9.08% | |
| Asr Vermogensbeheer N.V. | 0.32% | 97,748 | $27,387,217 | $29,877,654 | +$2,490,437 | +9.09% | |
| Nuveen, Llc | 0.01% | 96,374 | $27,005,923 | $29,457,677 | +$2,451,754 | +9.08% |
Frequently asked questions about AYI
Who owns the most AYI stock?
The largest holders of AYI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ACUITY BRANDS INC (AYI).
Is AYI widely held by superinvestors?
Many widely followed stocks like AYI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AYI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.