Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
324 institutional managers reported holding AZZ for the quarter ended Mar 31, 2026. Together they hold about 93% of shares outstanding; the top 10 hold 55%. 53 opened new positions; 41 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 4.43M | 14.66% | $554.4M | added +0.8% | ≤2013 |
| Vanguard Group | 3.40M | 11.26% | $425.8M | added +1.2% | ≤2013 |
| FMR (Fidelity) | 1.60M | 5.31% | $200.9M | added +0.9% | ≤2013 |
| T. Rowe Price Investment Management, INC. | 1.56M | 5.16% | $195.2M | added +317.3% | 2022 Q3 |
| Capital International Investors | 1.44M | 4.77% | $180.4M | trimmed -28.4% | 2025 Q1 |
| State Street | 1.13M | 3.75% | $141.8M | added +2% | 2015 Q4 |
| Dimensional Fund Advisors | 1.06M | 3.53% | $133.4M | trimmed -9.9% | ≤2013 |
| Geode Capital | 732.4k | 2.42% | $91.8M | added +2.8% | ≤2013 |
| Morgan Stanley | 650.7k | 2.15% | $81.5M | trimmed -15.6% | ≤2013 |
| Wellington Management | 523.2k | 1.73% | $65.5M | trimmed -4.8% | 2024 Q3 |
| Capital Group (American Funds) | 490.1k | 1.62% | $61.4M | opened | 2026 Q1 |
| Copeland Capital Management, LLC | 458.1k | 1.52% | $57.4M | trimmed -1.7% | 2025 Q3 |
| Westwood Holdings Group INC | 457.9k | 1.52% | $57.4M | trimmed -9.9% | 2021 Q2 |
| T. Rowe Price | 383.7k | 1.27% | $48.1M | added +21.6% | ≤2013 |
| Segall Bryant & Hamill, LLC | 381.1k | 1.26% | $47.7M | trimmed -15.1% | 2013 Q3 |
| Charles Schwab Investment Management | 366.4k | 1.21% | $45.9M | unchanged | ≤2013 |
| Gamco Investors, INC. et al | 363.4k | 1.20% | $45.5M | trimmed -27.3% | 2013 Q3 |
| SEB Asset Management AB | 362.0k | 1.20% | $45.3M | opened | 2026 Q1 |
| Northern Trust | 361.0k | 1.20% | $45.2M | unchanged | ≤2013 |
| Harvey Partners, LLC (focused) | 351.5k | 1.16% | $44.0M | trimmed -3.6% | 2020 Q4 |
| Invesco | 332.9k | 1.10% | $41.7M | added +7.8% | ≤2013 |
| Bank OF America CORP /DE/ | 285.9k | 0.95% | $35.8M | trimmed -11.5% | ≤2013 |
| Federated Hermes, INC. | 285.8k | 0.95% | $35.8M | unchanged | 2023 Q4 |
| Ameriprise Financial INC | 249.8k | 0.83% | $31.3M | added +148.3% | ≤2013 |
| Kennedy Capital Management LLC | 237.1k | 0.79% | $29.7M | trimmed -1.3% | 2020 Q3 |
| Two Sigma | 226.7k | 0.75% | $28.4M | opened | 2025 Q2 |
| BNY Mellon | 221.9k | 0.73% | $27.8M | trimmed -1.9% | ≤2013 |
| Boston Partners | 215.2k | 0.71% | $27.0M | trimmed -6.3% | 2024 Q2 |
| Allspring Global Investments Holdings, LLC | 197.0k | 0.65% | $24.7M | trimmed -15.3% | 2025 Q2 |
| Aberdeen Group plc | 183.5k | 0.61% | $23.0M | added +6.7% | 2025 Q4 |
| King Luther Capital Management CORP | 183.4k | 0.61% | $23.0M | unchanged | ≤2013 |
| Principal Financial Group INC | 167.3k | 0.55% | $21.0M | trimmed -2.6% | ≤2013 |
| GAMCO (Gabelli) | 167.2k | 0.55% | $20.9M | trimmed -18.4% | 2013 Q3 |
| UBS | 137.5k | 0.46% | $17.2M | added +32.8% | ≤2013 |
| Public Sector Pension Investment Board | 129.8k | 0.43% | $16.3M | added +6% | ≤2013 |
| Goldman Sachs | 118.2k | 0.39% | $14.8M | trimmed -5.2% | ≤2013 |
| Crawford Investment Counsel INC | 113.4k | 0.38% | $14.2M | trimmed -3.2% | 2021 Q4 |
| Qube Research & Technologies LTD | 108.3k | 0.36% | $13.6M | added +57.5% | 2025 Q3 |
| SEI Investments CO | 102.0k | 0.34% | $12.8M | added +50.5% | 2016 Q4 |
| Silvercrest Asset Management Group LLC | 101.6k | 0.34% | $12.7M | trimmed -10% | 2025 Q3 |
| Tudor Investment | 96.1k | 0.32% | $12.0M | trimmed -25.6% | 2025 Q2 |
| Speece Thorson Capital Group INC (focused) | 92.6k | 0.31% | $11.6M | trimmed -18.3% | 2025 Q2 |
| Janus Henderson | 88.3k | 0.29% | $11.1M | added +162.1% | 2021 Q4 |
| Nordea Investment Management AB | 82.4k | 0.27% | $10.3M | trimmed -4.9% | 2024 Q4 |
| Rhumbline Advisers | 80.7k | 0.27% | $10.1M | added +2.5% | ≤2013 |
| Nuveen | 79.5k | 0.26% | $10.0M | added +11.8% | 2019 Q2 |
| Envestnet Asset Management INC | 78.0k | 0.26% | $9.8M | added +17.6% | 2021 Q1 |
| Pier Capital, LLC | 69.7k | 0.23% | $8.7M | trimmed -1.8% | 2025 Q4 |
| Legal & General Group PLC | 66.7k | 0.22% | $8.4M | trimmed -9.3% | 2014 Q3 |
| First Trust Advisors LP | 65.0k | 0.21% | $8.1M | added +28.7% | 2023 Q4 |
Largest 50 of 324 shown; the full ranked, searchable register is at boothcheck.com/holders/AZZ. 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.