Acuity Brands, Inc. (AYI) Ownership
AYI ownership summary
as of October 17, 2026- Institutions
- 102.8% of shares outstanding
- Insiders
- 0.42% of shares outstanding
- Shares outstanding
- 29.9M
- Float
- 29.8M shares available to trade
- Short interest
- 3.59% 928K shares short
- Days to cover
- 2.85 short interest down 9.8% vs prior month
- Institutions 102.85%
- Insiders 0.42%
AYI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | FMR Inc | 12.04% | 3.6M | $1.09B | +1.2M (+53.0%) | June 30, 2026 |
| 2 | BlackRock Inc | 9.95% | 3.0M | $903.3M | −84,109 (−2.7%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 4.80% | 1.4M | $435.7M | +21,928 (+1.5%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 4.57% | 1.4M | $415.3M | −6,252 (−0.5%) | June 30, 2026 |
| 5 | AQR Capital Management LLC | 4.26% | 1.3M | $386.5M | +838,610 (+192.4%) | June 30, 2026 |
| 6 | State Street Corp | 3.23% | 966K | $292.9M | +19,420 (+2.1%) | June 30, 2026 |
| 7 | Fuller & Thaler Asset Management Inc | 2.58% | 772K | $234.1M | +222,485 (+40.5%) | June 30, 2026 |
| 8 | Geode Capital Management, LLC | 2.57% | 768K | $233.0M | +191,972 (+33.3%) | June 30, 2026 |
| 9 | Dimensional Fund Advisors, Inc. | 2.56% | 767K | $232.5M | +131,376 (+20.7%) | June 30, 2026 |
| 10 | American Century Companies Inc | 2.48% | 743K | $225.4M | −5,569 (−0.7%) | June 30, 2026 |
| 11 | JPMorgan Chase & Co | 2.38% | 713K | $216.2M | −58,166 (−7.5%) | June 30, 2026 |
| 12 | Wellington Management Company LLP | 2.20% | 658K | $199.6M | −104,825 (−13.7%) | June 30, 2026 |
| 13 | T. Rowe Price Associates, Inc. | 1.81% | 541K | $164.2M | +99,927 (+22.6%) | June 30, 2026 |
| 14 | Boston Partners Global Investors, Inc | 1.79% | 536K | $162.4M | −64,280 (−10.7%) | June 30, 2026 |
| 15 | UBS Group AG | 1.72% | 516K | $156.4M | +291,113 (+129.6%) | June 30, 2026 |
| 16 | First Trust Advisors L.P. | 1.45% | 434K | $131.7M | +56,223 (+14.9%) | June 30, 2026 |
| 17 | Fidelity International Ltd | 1.42% | 424K | $128.5M | −852 (−0.2%) | June 30, 2026 |
| 18 | The Goldman Sachs Group Inc | 1.28% | 382K | $115.9M | +180,467 (+89.4%) | June 30, 2026 |
| 19 | Morgan Stanley - Brokerage Accounts | 1.21% | 363K | $110.2M | +99,064 (+37.5%) | June 30, 2026 |
| 20 | Allen Operations LLC | 1.15% | 344K | $104.3M | — | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 12 holders added 3.4M shares and 7 cut 324K.
AYI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | iShares Core S&P Mid-Cap ETF | 3.54% | 1.1M | $321.2M | −384 (−0.0%) | September 30, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 3.22% | 965K | $292.5M | −1,088 (−0.1%) | August 31, 2026 |
| 3 | Strategic Advisers Fidelity US TtlStk | 3.19% | 954K | $289.4M | +6,477 (+0.7%) | August 31, 2026 |
| 4 | Vanguard Small Cap Index | 2.33% | 697K | $211.5M | +399 (+0.1%) | August 31, 2026 |
| 5 | FullerThaler Behavioral Sm-Cp Eq R6 | 2.30% | 689K | $208.9M | +149,424 (+27.7%) | June 30, 2026 |
| 6 | American Century Ultra® Inv | 1.64% | 492K | $149.2M | — | June 30, 2026 |
| 7 | Vanguard MStar Small Cap Value Index | 1.48% | 443K | $134.3M | +339 (+0.1%) | August 31, 2026 |
| 8 | Fidelity Global Technology A-Dis-EUR | 1.29% | 386K | $117.1M | −116 (−0.0%) | August 31, 2026 |
| 9 | Fidelity Series Value Discovery | 1.17% | 350K | $106.3M | −16,300 (−4.4%) | August 31, 2026 |
| 10 | Fidelity Mid-Cap Stock | 1.16% | 348K | $105.7M | — | August 31, 2026 |
| 11 | JPMorgan Mid Cap Value L | 1.05% | 314K | $95.3M | −6,968 (−2.2%) | August 31, 2026 |
| 12 | Vanguard Explorer Inv | 1.02% | 307K | $93.0M | −25,145 (−7.6%) | June 30, 2026 |
| 13 | First Trust SMID Cp Rising Div Achv ETF | 0.99% | 297K | $90.1M | — | September 30, 2026 |
| 14 | Global X US Infrastructure Dev ETF | 0.82% | 246K | $74.7M | +1,800 (+0.7%) | September 30, 2026 |
| 15 | Fidelity VIP Mid Cap Initial | 0.77% | 230K | $69.8M | — | August 31, 2026 |
| 16 | Hartford MidCap Y | 0.76% | 226K | $68.6M | −1,577 (−0.7%) | August 31, 2026 |
| 17 | State Street® SPDR® S&P MIDCAP 400® ETF | 0.74% | 220K | $66.8M | −2,481 (−1.1%) | August 31, 2026 |
| 18 | Fidelity Value | 0.65% | 194K | $58.7M | — | August 31, 2026 |
| 19 | PIMCO RAE US Small Instl | 0.60% | 178K | $54.1M | −28,756 (−13.9%) | June 30, 2026 |
| 20 | Fidelity Low-Priced Stock | 0.59% | 177K | $53.6M | — | July 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
AYI insider transactions
latest 6| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-08 | Laura O'shaughnessy | Buy | $282.98 | 1,000 | $282,980 |
| 2026-01-28 | Karen J Holcom | Sell | $309.23 | 4,974 | $1.5M |
| 2025-10-28 | Barry R Goldman | Sell | $365.11 | 4,489 | $1.6M |
| 2025-10-24 | Barry R Goldman | Sell | $368.01 | 4,687 | $1.7M |
| 2025-07-01 | Barry R Goldman | Sell | $298.30 | 4,125 | $1.2M |
| 2025-06-27 | Karen J Holcom | Sell | $301.04 | 6,000 | $1.8M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
AYI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns AYI
Institutional investors own 102.8% of Acuity Brands's shares and insiders 0.42%. The largest holder is FMR Inc with 12.04% of the shares (3.6M), as of June 30, 2026. Among the top 20 institutions, 12 added shares and 7 reduced their stake in the latest filings. Short interest is 3.59% of the float, or 2.85 days of average trading volume. The share count fell 27.1% since 2014.
Related: AYI analyst forecast, AYI key metrics, AYI dividend history. See the AYI stock overview for the latest quote and news.
AYI ownership FAQ
Who owns the most Acuity Brands stock?
The largest shareholders of Acuity Brands are FMR Inc (12.04%), BlackRock Inc (9.95%), Vanguard Portfolio Management, LLC (4.80%), Vanguard Capital Management, LLC (4.57%), AQR Capital Management LLC (4.26%).
What percentage of Acuity Brands is owned by institutions?
Institutions hold 102.8% of Acuity Brands's shares outstanding; insiders hold 0.42%.
Which funds own Acuity Brands?
The largest fund holders of Acuity Brands are iShares Core S&P Mid-Cap ETF (3.54%), Vanguard MStar Total Stk Mkt Idx Invest (3.22%), Strategic Advisers Fidelity US TtlStk (3.19%), Vanguard Small Cap Index (2.33%), FullerThaler Behavioral Sm-Cp Eq R6 (2.30%).
What is Acuity Brands's short interest?
928K shares of Acuity Brands were sold short, 3.59% of the float; at the average daily volume it would take 2.85 days to cover.
Are insiders buying or selling Acuity Brands?
Of the latest 6 reported insider transactions in Acuity Brands (since June 27, 2025), 1 were purchases and 5 were sales.
How many shares of Acuity Brands are outstanding?
Acuity Brands has 29.9M shares outstanding, of which 29.8M are in the public float.