Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
186 institutional managers reported holding GGB for the quarter ended Mar 31, 2026. Together they hold about 43% of shares outstanding; the top 10 hold 24%. 32 opened new positions; 21 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Capital Group (American Funds) | 27.53M | 3.83% | $99.5M | opened | 2026 Q1 |
| Two Sigma | 25.84M | 3.60% | $93.4M | added +588.9% | 2021 Q1 |
| Donald Smith & CO., INC. | 24.14M | 3.36% | $87.3M | unchanged | 2025 Q2 |
| Contrarian Capital Management, L.l.c. (focused) | 19.07M | 2.66% | $68.9M | unchanged | 2016 Q2 |
| Aquamarine Financial (Cayman) LTD (focused) | 16.73M | 2.33% | $60.5M | trimmed -14.3% | 2025 Q3 |
| Bank OF America CORP /DE/ | 13.22M | 1.84% | $47.8M | added +11393.6% | ≤2013 |
| Acadian Asset Management | 13.04M | 1.82% | $47.1M | added +2080.4% | 2020 Q3 |
| Dimensional Fund Advisors | 11.88M | 1.65% | $42.9M | trimmed -1.5% | ≤2013 |
| Goldman Sachs | 10.99M | 1.53% | $39.7M | added +318.7% | ≤2013 |
| Renaissance Technologies | 10.94M | 1.52% | $39.5M | added +76.1% | 2021 Q1 |
| BlackRock | 10.85M | 1.51% | $39.2M | added +53.6% | ≤2013 |
| Itau Unibanco Holding S.a. | 8.74M | 1.22% | $31.6M | unchanged | 2016 Q2 |
| D. E. Shaw | 8.72M | 1.21% | $31.5M | added +439.6% | 2024 Q1 |
| Jane Street | 7.94M | 1.11% | $28.7M | added +534.2% | 2014 Q1 |
| Mackenzie Financial CORP | 7.78M | 1.08% | $28.1M | added +88.9% | 2022 Q4 |
| Morgan Stanley | 7.50M | 1.04% | $27.1M | added +29.3% | ≤2013 |
| Causeway Capital Management LLC | 6.84M | 0.95% | $24.7M | trimmed -5.8% | 2023 Q1 |
| American Century Companies INC | 6.65M | 0.93% | $24.0M | added +22.6% | 2019 Q4 |
| MFS Investment Management | 5.21M | 0.73% | $18.8M | added +292.8% | ≤2013 |
| SPX Gestao de Recursos Ltda | 4.25M | 0.59% | $15.4M | trimmed -13.1% | 2025 Q2 |
| Qube Research & Technologies LTD | 4.07M | 0.57% | $14.7M | opened | 2020 Q1 |
| UBS | 4.04M | 0.56% | $14.6M | added +27.6% | ≤2013 |
| State Street | 3.70M | 0.52% | $13.4M | added +4.8% | ≤2013 |
| Engineers Gate Manager LP | 3.12M | 0.43% | $11.3M | added +6416.8% | 2023 Q1 |
| Millennium Management | 2.77M | 0.39% | $10.0M | trimmed -20.9% | ≤2013 |
| FIL LTD | 2.69M | 0.38% | $9.7M | added +5.8% | 2025 Q2 |
| Russell Investments Group, LTD. | 2.69M | 0.38% | $9.7M | added +209.2% | 2022 Q2 |
| Kapitalo Investimentos Ltda (focused) | 2.66M | 0.37% | $9.6M | opened | 2025 Q1 |
| Vanguard Group | 2.43M | 0.34% | $8.8M | added +8.3% | ≤2013 |
| BNP Paribas Financial Markets | 2.27M | 0.32% | $8.2M | added +106.2% | ≤2013 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 1.57M | 0.22% | $5.7M | added +168.6% | 2022 Q1 |
| Man Group | 1.51M | 0.21% | $5.5M | opened | 2026 Q1 |
| Amundi | 1.42M | 0.20% | $5.1M | added +4.6% | 2017 Q4 |
| Aquatic Capital Management LLC | 1.39M | 0.19% | $5.0M | added +35% | 2025 Q1 |
| Optiver | 1.17M | 0.16% | $4.2M | trimmed -53.9% | 2024 Q4 |
| AQR Capital | 1.10M | 0.15% | $4.0M | added +303.5% | ≤2013 |
| NEW York State Common Retirement Fund | 1.09M | 0.15% | $4.0M | opened | 2026 Q1 |
| SEI Investments CO | 1.08M | 0.15% | $3.9M | added +282.3% | ≤2013 |
| Northern Trust | 1.01M | 0.14% | $3.7M | unchanged | ≤2013 |
| Capital International Sarl | 954.7k | 0.13% | $3.5M | added +2.2% | 2018 Q4 |
| Citigroup INC | 925.4k | 0.13% | $3.3M | added +775.7% | ≤2013 |
| Point72 | 880.4k | 0.12% | $3.2M | trimmed -57.5% | 2024 Q3 |
| Hsbc Holdings PLC | 857.3k | 0.12% | $3.1M | added +4.2% | ≤2013 |
| Legal & General Group PLC | 840.6k | 0.12% | $3.0M | unchanged | 2020 Q4 |
| Banque Cantonale Vaudoise | 800.0k | 0.11% | $2.9M | unchanged | 2022 Q1 |
| BTG Pactual Asset Management US LLC | 765.9k | 0.11% | $2.8M | opened | 2026 Q1 |
| VAN ECK Associates CORP | 700.6k | 0.10% | $2.5M | trimmed -15.9% | ≤2013 |
| Deutsche Bank AG\ | 699.3k | 0.10% | $2.5M | opened | 2026 Q1 |
| Creative Planning | 605.9k | 0.08% | $2.2M | added +130.3% | 2022 Q3 |
| Marshall Wace | 586.6k | 0.08% | $2.1M | trimmed -68.8% | 2024 Q1 |
Largest 50 of 186 shown; the full ranked, searchable register is at boothcheck.com/holders/GGB. 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.