Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
507 institutional managers reported holding COLB for the quarter ended Mar 31, 2026. Together they hold about 94% of shares outstanding; the top 10 hold 52%. 66 opened new positions; 51 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 29.97M | 10.26% | $822.1M | added +0.8% | ≤2013 |
| BlackRock | 27.07M | 9.26% | $742.5M | added +1.3% | ≤2013 |
| T. Rowe Price Investment Management, INC. | 15.92M | 5.45% | $436.6M | added +262.5% | 2022 Q3 |
| Wellington Management | 14.94M | 5.12% | $410.0M | trimmed -17.5% | 2023 Q3 |
| Dimensional Fund Advisors | 13.55M | 4.64% | $371.7M | added +3.1% | ≤2013 |
| State Street | 12.48M | 4.27% | $342.3M | trimmed -2.6% | ≤2013 |
| Charles Schwab Investment Management | 10.44M | 3.57% | $286.4M | trimmed -16.9% | ≤2013 |
| American Century Companies INC | 9.74M | 3.33% | $267.1M | added +3.1% | 2021 Q4 |
| T. Rowe Price | 8.97M | 3.07% | $246.2M | added +3.5% | ≤2013 |
| BNY Mellon | 7.41M | 2.54% | $203.3M | unchanged | ≤2013 |
| Franklin Resources | 6.19M | 2.12% | $169.7M | added +4.5% | ≤2013 |
| MFS Investment Management | 6.02M | 2.06% | $165.3M | trimmed -6.1% | 2023 Q1 |
| Geode Capital | 5.86M | 2.01% | $160.9M | added +2.9% | ≤2013 |
| HoldCo Asset Management, LP (focused) | 5.72M | 1.96% | $157.0M | unchanged | 2025 Q2 |
| Morgan Stanley | 4.90M | 1.68% | $134.5M | trimmed -16.7% | ≤2013 |
| UBS | 4.40M | 1.51% | $120.8M | trimmed -12.9% | ≤2013 |
| Silvercrest Asset Management Group LLC | 4.15M | 1.42% | $113.8M | trimmed -3.7% | 2019 Q3 |
| Invesco | 4.10M | 1.40% | $112.4M | trimmed -1.8% | ≤2013 |
| Nomura Asset Management International INC. | 3.90M | 1.33% | $107.0M | unchanged | 2025 Q4 |
| Channing Capital Management, LLC | 3.23M | 1.10% | $88.5M | trimmed -3.2% | 2025 Q3 |
| Citadel Advisors | 3.17M | 1.09% | $87.1M | added +20.3% | 2017 Q1 |
| Northern Trust | 2.62M | 0.90% | $71.7M | added +2.8% | ≤2013 |
| Epoch Investment Partners, INC. | 2.53M | 0.87% | $69.4M | trimmed -1.6% | 2022 Q2 |
| Fisher Investments | 2.32M | 0.80% | $63.7M | trimmed -7.7% | 2015 Q3 |
| Cooke & Bieler LP | 2.15M | 0.74% | $59.1M | trimmed -4.6% | 2023 Q1 |
| Manufacturers Life Insurance Company, THE | 2.07M | 0.71% | $56.8M | added +15.9% | ≤2013 |
| Pzena Investment Management | 2.03M | 0.70% | $55.8M | added +12.7% | 2023 Q1 |
| Bank OF America CORP /DE/ | 1.45M | 0.50% | $39.8M | added +25.5% | ≤2013 |
| Goldman Sachs | 1.34M | 0.46% | $36.8M | added +18.2% | ≤2013 |
| Systematic Financial Management LP | 1.34M | 0.46% | $36.8M | added +4% | 2022 Q3 |
| Balyasny Asset Management | 1.28M | 0.44% | $35.1M | trimmed -66.2% | 2025 Q1 |
| NEW York State Common Retirement Fund | 1.28M | 0.44% | $35.0M | trimmed -0.6% | ≤2013 |
| Vaughan Nelson Investment Management, L.p. | 1.23M | 0.42% | $33.8M | opened | 2026 Q1 |
| BNP Paribas Financial Markets | 1.21M | 0.41% | $33.2M | added +6.3% | ≤2013 |
| First Trust Advisors LP | 1.20M | 0.41% | $33.0M | trimmed -37.8% | ≤2013 |
| Stieven Capital Advisors, L.p. (focused) | 1.19M | 0.41% | $32.5M | added +6.9% | 2022 Q4 |
| Mackenzie Financial CORP | 1.13M | 0.39% | $31.1M | opened | 2024 Q3 |
| Boston Partners | 1.09M | 0.37% | $30.0M | trimmed -6.7% | 2024 Q3 |
| Quantinno Capital Management LP | 1.07M | 0.36% | $29.3M | added +12.4% | 2024 Q4 |
| Capital Group (American Funds) | 1.06M | 0.36% | $29.2M | unchanged | 2023 Q1 |
| Lighthouse Investment Partners, LLC | 1.01M | 0.34% | $27.6M | added +98.8% | 2025 Q1 |
| Palisade Capital Management, LP | 989.7k | 0.34% | $27.2M | trimmed -6.8% | 2024 Q2 |
| LSV Asset Management | 980.8k | 0.34% | $26.9M | trimmed -3.9% | 2024 Q1 |
| Leeward Investments, LLC - MA | 880.4k | 0.30% | $24.2M | trimmed -2.7% | 2023 Q1 |
| Algebris (UK) LTD | 866.7k | 0.30% | $23.8M | opened | 2026 Q1 |
| Ameriprise Financial INC | 853.6k | 0.29% | $23.4M | trimmed -8.9% | ≤2013 |
| Nuveen | 816.5k | 0.28% | $22.4M | added +2% | 2019 Q2 |
| AQR Capital | 812.8k | 0.28% | $22.3M | added +6.7% | 2020 Q1 |
| Raymond James Financial INC | 793.0k | 0.27% | $21.8M | added +20.3% | 2014 Q1 |
| Rhumbline Advisers | 768.4k | 0.26% | $21.1M | trimmed -0.6% | ≤2013 |
Largest 50 of 507 shown; the full ranked, searchable register is at boothcheck.com/holders/COLB. 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.