Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
562 institutional managers reported holding AYI for the quarter ended Mar 31, 2026. Together they hold about 90% of shares outstanding; the top 10 hold 43%. 68 opened new positions; 113 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 3.06M | 9.77% | $857.3M | added +5.6% | ≤2013 |
| Vanguard Group | 3.03M | 9.67% | $849.1M | added +2.2% | ≤2013 |
| FMR (Fidelity) | 2.36M | 7.51% | $659.4M | added +40.4% | 2014 Q1 |
| State Street | 946.6k | 3.02% | $265.0M | added +2.3% | ≤2013 |
| Wellington Management | 763.0k | 2.43% | $213.6M | trimmed -3.2% | 2021 Q1 |
| American Century Companies INC | 749.0k | 2.39% | $209.6M | trimmed -1.1% | ≤2013 |
| T. Rowe Price Investment Management, INC. | 690.6k | 2.20% | $193.3M | added +751.8% | 2025 Q1 |
| Dimensional Fund Advisors | 635.2k | 2.02% | $177.8M | added +8.2% | ≤2013 |
| Boston Partners | 599.8k | 1.91% | $167.9M | unchanged | 2019 Q2 |
| Acadian Asset Management | 583.0k | 1.86% | $163.2M | added +57.3% | 2018 Q1 |
| Geode Capital | 576.4k | 1.84% | $161.4M | added +1.1% | ≤2013 |
| Fuller & Thaler Asset Management, INC. | 549.6k | 1.75% | $153.9M | added +14.7% | 2021 Q1 |
| T. Rowe Price | 441.5k | 1.41% | $123.6M | added +5% | ≤2013 |
| UBS | 436.2k | 1.39% | $122.1M | trimmed -15.9% | ≤2013 |
| AQR Capital | 435.9k | 1.39% | $122.0M | added +33.4% | ≤2013 |
| FIL LTD | 424.6k | 1.35% | $118.9M | trimmed -1.2% | 2018 Q1 |
| First Trust Advisors LP | 378.0k | 1.21% | $105.8M | added +32.2% | 2013 Q3 |
| Durable Capital Partners LP (focused) | 355.7k | 1.13% | $99.6M | trimmed -56.4% | 2024 Q3 |
| Allen Investment Management, LLC | 354.6k | 1.13% | $99.3M | unchanged | 2020 Q3 |
| Fisher Investments | 333.5k | 1.06% | $93.3M | trimmed -1.4% | 2020 Q3 |
| Northern Trust | 296.3k | 0.94% | $82.9M | added +0.8% | ≤2013 |
| Allianz Asset Management GmbH | 295.8k | 0.94% | $82.8M | added +38.8% | 2014 Q1 |
| Alyeska Investment Group | 293.5k | 0.94% | $82.2M | trimmed -46.6% | 2025 Q1 |
| Bank OF America CORP /DE/ | 283.5k | 0.90% | $79.3M | added +58.8% | ≤2013 |
| Morgan Stanley | 264.2k | 0.84% | $74.0M | trimmed -1.8% | ≤2013 |
| Boston Trust Walden CORP | 252.7k | 0.81% | $70.7M | added +1.7% | 2020 Q4 |
| BNY Mellon | 229.5k | 0.73% | $64.3M | trimmed -0.7% | ≤2013 |
| Alua Capital Management LP (focused) | 226.2k | 0.72% | $63.3M | opened | 2026 Q1 |
| Mirae Asset Global Etfs Holdings LTD. | 226.0k | 0.72% | $63.3M | added +7.2% | 2018 Q3 |
| Charles Schwab Investment Management | 219.8k | 0.70% | $61.5M | added +4.7% | ≤2013 |
| Arrowstreet Capital | 213.8k | 0.68% | $59.8M | added +87.9% | 2024 Q2 |
| Earnest Partners LLC | 212.8k | 0.68% | $59.6M | trimmed -0.7% | 2017 Q4 |
| D. E. Shaw | 204.4k | 0.65% | $57.2M | added +503.4% | 2018 Q1 |
| Goldman Sachs | 201.8k | 0.64% | $56.5M | added +178.2% | ≤2013 |
| Greenstone Partners & CO., LLC (focused) | 179.7k | 0.57% | $50.3M | trimmed -6.8% | 2020 Q4 |
| Seizert Capital Partners, LLC | 170.8k | 0.55% | $47.8M | trimmed -5.4% | 2018 Q3 |
| Thrivent Financial for Lutherans | 167.1k | 0.53% | $46.8M | added +1.7% | 2025 Q3 |
| Voloridge Investment Management | 158.2k | 0.50% | $44.3M | added +663.7% | 2019 Q3 |
| Jupiter Asset Management LTD | 136.1k | 0.43% | $38.1M | added +1.8% | 2019 Q3 |
| Clark Capital Management Group, INC. | 134.5k | 0.43% | $37.6M | trimmed -30.1% | 2021 Q3 |
| Two Sigma | 132.0k | 0.42% | $36.9M | added +1518.5% | 2023 Q1 |
| Barclays PLC | 126.3k | 0.40% | $35.3M | added +385.1% | ≤2013 |
| Storebrand Asset Management AS | 123.4k | 0.39% | $34.5M | trimmed -7.4% | 2025 Q4 |
| Invesco | 118.1k | 0.38% | $33.1M | trimmed -55.3% | ≤2013 |
| Cooke & Bieler LP | 116.5k | 0.37% | $32.6M | opened | 2026 Q1 |
| Man Group | 111.2k | 0.35% | $31.1M | added +149.9% | 2018 Q1 |
| NEW York State Common Retirement Fund | 107.9k | 0.34% | $30.2M | trimmed -0.8% | ≤2013 |
| Robeco Institutional Asset Management B.v. | 102.0k | 0.33% | $28.5M | added +10.7% | 2017 Q4 |
| Envestnet Asset Management INC | 99.6k | 0.32% | $27.9M | added +11.6% | 2013 Q4 |
| ASR Vermogensbeheer N.v. | 97.7k | 0.31% | $27.4M | unchanged | 2025 Q1 |
Largest 50 of 562 shown; the full ranked, searchable register is at boothcheck.com/holders/AYI. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.