Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
547 institutional managers reported holding CLF for the quarter ended Mar 31, 2026. Together they hold about 82% of shares outstanding; the top 10 hold 46%. 81 opened new positions; 99 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| BlackRock | 58.62M | 10.28% | $495.3M | added +10.1% | ≤2013 |
| Vanguard Group | 55.25M | 9.69% | $466.8M | added +1.4% | ≤2013 |
| State Street | 39.31M | 6.90% | $332.2M | added +34.3% | ≤2013 |
| Maple Rock Capital Partners INC. (focused) | 20.75M | 3.64% | $175.3M | added +67.9% | 2025 Q2 |
| Slate Path Capital LP (focused) | 19.24M | 3.38% | $162.6M | trimmed -14.2% | 2020 Q4 |
| Dimensional Fund Advisors | 15.49M | 2.72% | $130.9M | added +6.4% | 2016 Q1 |
| Fairfax Financial (focused) | 14.90M | 2.61% | $125.9M | unchanged | 2024 Q4 |
| Two Sigma | 13.92M | 2.44% | $117.6M | added +190.5% | 2025 Q1 |
| D. E. Shaw | 12.73M | 2.23% | $107.5M | added +20% | ≤2013 |
| Geode Capital | 10.47M | 1.84% | $88.4M | added +4.2% | ≤2013 |
| Morgan Stanley | 8.89M | 1.56% | $75.1M | added +13.1% | ≤2013 |
| Citigroup INC | 8.65M | 1.52% | $73.1M | added +11.4% | ≤2013 |
| Charles Schwab Investment Management | 8.03M | 1.41% | $67.9M | added +4.8% | ≤2013 |
| Turiya Advisors Asia LTD (focused) | 7.66M | 1.34% | $64.7M | added +5.6% | 2025 Q2 |
| UBS | 7.08M | 1.24% | $59.9M | added +4.7% | ≤2013 |
| Millennium Management | 6.49M | 1.14% | $54.9M | trimmed -12.7% | 2015 Q3 |
| Kinetic Partners Management, LP (focused) | 5.24M | 0.92% | $44.3M | opened | 2026 Q1 |
| Northern Trust | 4.57M | 0.80% | $38.6M | added +2.6% | ≤2013 |
| Neuberger Berman Group LLC | 4.49M | 0.79% | $38.0M | trimmed -1.9% | ≤2013 |
| Man Group | 4.36M | 0.77% | $36.8M | added +60.2% | 2018 Q1 |
| Mirae Asset Global Etfs Holdings LTD. | 4.18M | 0.73% | $35.4M | added +24.3% | 2018 Q3 |
| Voloridge Investment Management | 3.97M | 0.70% | $33.6M | added +280.5% | 2025 Q2 |
| Squarepoint Ops LLC | 3.97M | 0.70% | $33.5M | added +5599.9% | 2022 Q4 |
| Susquehanna International Group | 3.84M | 0.67% | $32.4M | added +106.2% | ≤2013 |
| Tudor Investment | 3.66M | 0.64% | $30.9M | trimmed -12.5% | 2025 Q3 |
| Drexel Morgan & CO. | 3.40M | 0.60% | $28.7M | added +15% | 2022 Q3 |
| BNY Mellon | 3.35M | 0.59% | $28.3M | added +2.9% | ≤2013 |
| Qube Research & Technologies LTD | 3.26M | 0.57% | $27.5M | opened | 2026 Q1 |
| Goldman Sachs | 3.21M | 0.56% | $27.1M | added +69.8% | ≤2013 |
| Citadel Advisors | 2.87M | 0.50% | $24.2M | added +18% | ≤2013 |
| BNP Paribas Financial Markets | 2.82M | 0.49% | $23.8M | trimmed -55.4% | ≤2013 |
| Bank OF America CORP /DE/ | 2.80M | 0.49% | $23.7M | trimmed -33.7% | ≤2013 |
| Invesco | 2.77M | 0.49% | $23.4M | added +7.7% | ≤2013 |
| Balyasny Asset Management | 2.73M | 0.48% | $23.1M | trimmed -70.9% | 2022 Q1 |
| Douglas Lane & Associates, LLC | 2.38M | 0.42% | $20.1M | trimmed -1% | 2023 Q1 |
| Duquesne Family Office | 2.31M | 0.41% | $19.5M | added +32.5% | 2025 Q3 |
| Allianz Asset Management GmbH | 2.26M | 0.40% | $19.1M | trimmed -43.5% | 2017 Q1 |
| Point72 | 2.26M | 0.40% | $19.1M | trimmed -24.1% | 2024 Q4 |
| Hodges Capital Management INC. | 2.14M | 0.38% | $18.1M | trimmed -7.1% | ≤2013 |
| HRT Financial LP | 2.09M | 0.37% | $17.7M | added +31% | 2025 Q4 |
| Jump Financial | 1.98M | 0.35% | $16.7M | added +246.2% | 2022 Q4 |
| Easterly Investment Partners LLC | 1.96M | 0.34% | $16.6M | added +23.7% | 2024 Q3 |
| Assenagon Asset Management S.a. | 1.95M | 0.34% | $16.5M | opened | 2026 Q1 |
| Royal Bank OF Canada | 1.91M | 0.34% | $16.2M | added +1% | ≤2013 |
| Algert Global LLC | 1.84M | 0.32% | $15.5M | added +118.6% | 2025 Q1 |
| Ameriprise Financial INC | 1.64M | 0.29% | $13.9M | trimmed -6.8% | 2016 Q2 |
| Trexquant Investment LP | 1.55M | 0.27% | $13.1M | added +193.9% | 2025 Q2 |
| Aquatic Capital Management LLC | 1.53M | 0.27% | $13.0M | added +42.8% | 2024 Q3 |
| Rhumbline Advisers | 1.47M | 0.26% | $12.4M | unchanged | ≤2013 |
| LPL Financial LLC | 1.46M | 0.26% | $12.4M | added +10.9% | ≤2013 |
Largest 50 of 547 shown; the full ranked, searchable register is at boothcheck.com/holders/CLF. 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.