Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in AYI held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 3.6M | $1.36B | +53.0% | 12.039% | 0.06% |
| 2 | BlackRock, Inc. | 3.0M | $1.12B | -2.8% | 9.951% | 0.02% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.4M | $541.2M | +1.6% | 4.799% | 0.02% |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 1.4M | $515.8M | -0.4% | 4.575% | 0.01% |
| 5 | AQR CAPITAL MANAGEMENT LLC | 1.3M | $471.0M | +192.4% | 4.258% | 0.16% |
| 6 | STATE STREET CORP | 966K | $363.8M | +2.1% | 3.227% | 0.01% |
| 7 | FULLER & THALER ASSET MANAGEMENT, INC. | 772K | $290.8M | +40.5% | 2.579% | 0.79% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 768K | $289.5M | +33.3% | 2.567% | 0.02% |
| 9 | DIMENSIONAL FUND ADVISORS LP | 767K | $288.7M | +20.7% | 2.561% | 0.05% |
| 10 | AMERICAN CENTURY COMPANIES INC | 743K | $280.0M | -0.7% | 2.483% | 0.12% |
| 11 | JPMORGAN CHASE & CO | 713K | $262.7M | -7.5% | 2.382% | 0.01% |
| 12 | WELLINGTON MANAGEMENT GROUP LLP | 658K | $247.9M | -13.7% | 2.199% | 0.04% |
| 13 | Boston Partners | 536K | $201.6M | -10.7% | 1.789% | 0.18% |
| 14 | UBS Group AG | 516K | $194.3M | +129.6% | 1.723% | 0.02% |
| 15 | FIRST TRUST ADVISORS LP | 434K | $163.6M | +14.9% | 1.451% | 0.10% |
| 16 | FIL Ltd | 424K | $159.6M | -0.2% | 1.416% | 0.11% |
| 17 | GOLDMAN SACHS GROUP INC | 382K | $144.0M | +89.4% | 1.277% | 0.01% |
| 18 | MORGAN STANLEY | 363K | $136.8M | +37.5% | 1.214% | 0.01% |
| 19 | ALLEN OPERATIONS LLC | 344K | $129.6M | 0.0% | 1.149% | 17.96% |
| 20 | Fisher Asset Management, LLC | 326K | $122.6M | -2.4% | 1.088% | 0.04% |
| 21 | NORGES BANK | 317K | $119.4M | — | 1.059% | 0.01% |
| 22 | NORTHERN TRUST CORP | 294K | $110.9M | -0.7% | 0.983% | 0.01% |
| 23 | BANK OF AMERICA CORP /DE/ | 281K | $106.0M | -0.7% | 0.940% | 0.01% |
| 24 | Allianz Asset Management GmbH | 276K | $103.9M | -6.7% | 0.922% | 0.04% |
| 25 | Boston Trust Walden Corp | 271K | $101.9M | +7.1% | 0.904% | 0.78% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in AYI — a direct measure of their conviction.
Filings activity in AYI during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new AYI position in Q2 2026
Institutions that fully closed their AYI position in Q2 2026
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 642 | +10% | 100.94% | +4.36 pp | $10.78B | +45% |
| Q1 2026 | 583 | 3.5% | 96.58% | 3.09 pp | $7.44B | 26% |
| Q4 2025 | 604 | +8.6% | 99.67% | +3.52 pp | $10.00B | +5.2% |
| Q3 2025 | 556 | +3.2% | 96.15% | 7.75 pp | $9.51B | 13% |
| Q2 2025 | 539 | +2.5% | 103.90% | +4.39 pp | $10.95B | +47% |
| Q1 2025 | 526 | +0.2% | 99.51% | 1.35 pp | $7.43B | 11% |
| Q4 2024 | 525 | +14% | 100.86% | +3.22 pp | $8.36B | +9.9% |
| Q3 2024 | 459 | — | 97.64% | — | $7.61B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as a key fundamental indicator because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Apr 30, 2026 | Leibman Maya | Buy | 200 | $288.83 | $58K |
| Apr 8, 2026 | O'Shaughnessy Laura | Buy | 1K | $282.98 | $283K |
Quick answers to the most common questions about buying AYI stock.
Based on Q2 2026 13F filings, institutional ownership of Acuity Brands, Inc. stands at 100.9%, held across 642 reporting institutions.
FMR LLC is the largest reported institutional holder of AYI, with approximately 3,604,071 shares worth $1.36B as of Q2 2026.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of AYI, including Fisher Asset Management, LLC.
Our composite Smart Money Score for AYI is 68 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
105 institutions opened new positions in AYI during Q2 2026, while 52 fully exited. 457 added to existing positions and 62 trimmed.
AYI institutional ownership rose by 4.36 percentage points quarter-over-quarter, with a net change of +59 holders.
The top 10 institutions account for 51.2% of all reported 13F value in AYI, and the top 25 account for 72.6%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Acuity Brands, Inc. (AYI) Institutional Ownership