Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
2,061 institutional managers reported holding CB for the quarter ended Mar 31, 2026. Together they hold about 88% of shares outstanding; the top 10 hold 45%. 181 opened new positions; 139 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 35.93M | 9.11% | $11.71B | unchanged | ≤2013 |
| Berkshire Hathaway (focused) | 34.25M | 8.68% | $11.16B | unchanged | 2024 Q1 |
| BlackRock | 27.89M | 7.07% | $9.09B | trimmed -1.4% | ≤2013 |
| State Street | 16.71M | 4.23% | $5.44B | trimmed -0.8% | ≤2013 |
| T. Rowe Price | 15.79M | 4.00% | $5.15B | added +5.7% | ≤2013 |
| GQG Partners | 12.42M | 3.15% | $4.05B | unchanged | 2024 Q3 |
| FMR (Fidelity) | 12.22M | 3.10% | $3.98B | added +11.9% | ≤2013 |
| Geode Capital | 9.12M | 2.31% | $2.97B | added +2.6% | ≤2013 |
| MFS Investment Management | 6.51M | 1.65% | $2.12B | trimmed -5.4% | ≤2013 |
| Wellington Management | 6.31M | 1.60% | $2.06B | trimmed -16% | ≤2013 |
| Capital Research Global Investors | 6.30M | 1.60% | $2.05B | added +10.7% | 2020 Q4 |
| UBS | 6.28M | 1.59% | $2.05B | added +20.6% | ≤2013 |
| Capital Group (American Funds) | 6.05M | 1.53% | $1.97B | trimmed -39.1% | 2016 Q4 |
| Ameriprise Financial INC | 5.31M | 1.35% | $1.73B | added +5.7% | ≤2013 |
| Morgan Stanley | 5.03M | 1.27% | $1.64B | trimmed -2.6% | ≤2013 |
| Bank OF America CORP /DE/ | 4.91M | 1.24% | $1.60B | added +3.1% | ≤2013 |
| Wells Fargo & COMPANY/MN | 4.66M | 1.18% | $1.52B | trimmed -0.8% | ≤2013 |
| Raymond James Financial INC | 4.07M | 1.03% | $1.33B | trimmed -1.3% | ≤2013 |
| AQR Capital | 3.84M | 0.97% | $1.25B | trimmed -9.5% | ≤2013 |
| Northern Trust | 3.58M | 0.91% | $1.17B | trimmed -0.9% | ≤2013 |
| BNY Mellon | 3.42M | 0.87% | $1.11B | added +74.3% | ≤2013 |
| Goldman Sachs | 2.86M | 0.72% | $931.1M | added +8% | ≤2013 |
| Legal & General Group PLC | 2.58M | 0.65% | $840.2M | added +2.2% | 2016 Q4 |
| Capital International Investors | 2.35M | 0.59% | $764.3M | trimmed -7.1% | 2016 Q4 |
| Charles Schwab Investment Management | 2.29M | 0.58% | $745.5M | added +2.2% | ≤2013 |
| Invesco | 2.28M | 0.58% | $741.4M | added +0.9% | ≤2013 |
| Dimensional Fund Advisors | 2.15M | 0.55% | $701.6M | added +1.8% | ≤2013 |
| Royal Bank OF Canada | 2.09M | 0.53% | $680.9M | added +13.1% | ≤2013 |
| Nuveen | 1.77M | 0.45% | $576.8M | added +34.6% | ≤2013 |
| Schroder Investment Management Group | 1.67M | 0.42% | $543.4M | added +13% | ≤2013 |
| First Trust Advisors LP | 1.61M | 0.41% | $523.4M | added +5.3% | ≤2013 |
| Amundi | 1.60M | 0.41% | $522.5M | trimmed -3.6% | ≤2013 |
| Principal Financial Group INC | 1.33M | 0.34% | $434.6M | added +0.5% | ≤2013 |
| Arrowstreet Capital | 1.31M | 0.33% | $425.4M | added +30.7% | 2020 Q1 |
| Envestnet Asset Management INC | 1.30M | 0.33% | $423.9M | added +4.1% | ≤2013 |
| Viking Global | 1.30M | 0.33% | $422.0M | added +27.7% | 2025 Q4 |
| Deutsche Bank AG\ | 1.29M | 0.33% | $418.8M | trimmed -7% | ≤2013 |
| Barclays PLC | 1.25M | 0.32% | $407.6M | added +11.8% | ≤2013 |
| Davis Selected Advisers | 1.20M | 0.30% | $389.6M | added +0.7% | 2014 Q4 |
| Altrinsic Global Advisors LLC (focused) | 1.18M | 0.30% | $385.8M | trimmed -9.8% | 2016 Q1 |
| National Pension Service | 1.16M | 0.29% | $378.4M | added +1.1% | 2024 Q1 |
| Beutel, Goodman & CO LTD. | 1.16M | 0.29% | $377.1M | trimmed -21.9% | 2024 Q3 |
| Mitsubishi UFJ Asset Management CO., LTD. | 1.10M | 0.28% | $358.7M | added +6.2% | ≤2013 |
| Swiss National Bank | 1.10M | 0.28% | $357.6M | added +5.8% | ≤2013 |
| Fayez Sarofim & CO | 1.07M | 0.27% | $348.4M | unchanged | 2016 Q1 |
| Lazard Asset Management LLC | 971.7k | 0.25% | $316.7M | trimmed -7.9% | ≤2013 |
| Sumitomo Mitsui Trust Group, INC. | 971.2k | 0.25% | $316.5M | trimmed -5.3% | 2022 Q1 |
| Mycio Wealth Partners, LLC (focused) | 950.4k | 0.24% | $309.7M | trimmed -3.3% | ≤2013 |
| Troy Asset Management LTD (focused) | 874.8k | 0.22% | $285.1M | added +10.4% | 2024 Q3 |
| Boston Partners | 860.1k | 0.22% | $280.3M | unchanged | 2016 Q1 |
Largest 50 of 2,061 shown; the full ranked, searchable register is at boothcheck.com/holders/CB. 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.