COLUMBIA BANKING SYSTEM INC (COLB) Institutional Buying Activity
Institutional investors tracked by InsiderSet increased exposure to COLUMBIA BANKING SYSTEM INC (COLB) during the quarter ended June 30, 2026 through a combination of new purchases and expanded existing positions disclosed in SEC Form 13F filings.
The largest institutional buyer of COLB during the latest reporting period was Hancock Classic Value, which increased its reported COLB position by approximately $40.28M based on quarter-end filing values. Several additional hedge funds and long-term asset managers also reported meaningful increases in COLB exposure during the quarter.
Institutional buying activity can provide insight into investor conviction, sector allocation trends, and smart money positioning toward COLUMBIA BANKING SYSTEM INC (COLB). InsiderSet tracks quarterly accumulation trends, new institutional positions, ownership increases, and estimated performance of newly disclosed holdings using SEC filing data and recent market prices.
The investors highlighted on this page collectively added approximately $98.74M in reported COLB exposure during the latest filing period, reflecting continued institutional interest in COLUMBIA BANKING SYSTEM INC's growth initiatives and strategic positioning.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q2 2026 | Renaissance Technologies LLC | Buy | 243,146 | 384,544 | $12,324,635 |
| Q2 2026 | First Eagle U.S. Value | Buy | 155,600 | 384,600 | $12,326,430 |
| Q2 2026 | Hancock Classic Value | Buy | 96,103 | 2,129,322 | $68,244,770 |
| Q1 2026 | Hancock Classic Value | Buy | 228,825 | 2,033,219 | $55,771,197 |
| Q1 2026 | First Eagle U.S. Value | Buy | 92,500 | 229,000 | $6,281,470 |
| Q4 2025 | First Eagle U.S. Value | Buy | 96,500 | 136,500 | $3,815,175 |
| Q4 2025 | Sequoia Financial Advisors | Buy | 8,929 | 23,099 | $645,618 |
| Q3 2025 | Hancock Classic Value | Buy | 384,649 | 1,926,346 | $49,584,146 |
| Q3 2025 | First Eagle U.S. Value | Buy | 40,000 | 40,000 | $1,029,600 |
| Q3 2025 | Sequoia Financial Advisors | Buy | 1,826 | 14,170 | $364,736 |
| Q2 2025 | Hancock Classic Value | Buy | 121,758 | 1,541,697 | $36,044,876 |
| Q2 2025 | Sequoia Financial Advisors | Buy | 12,344 | 12,344 | $288,603 |
| Q2 2024 | Renaissance Technologies LLC | Buy | 273,018 | 573,596 | $11,408,824 |
| Q1 2024 | Hancock Classic Value | Buy | 563,674 | 2,456,438 | $47,532,075 |
| Q1 2024 | Renaissance Technologies LLC | Buy | 212,082 | 300,578 | $5,816 |
| Q4 2023 | Renaissance Technologies LLC | Buy | 45,610 | 88,496 | $2,361 |
| Q4 2023 | Hancock Classic Value | Buy | 8,524 | 1,892,764 | $50,498,944 |
| Q2 2023 | Hancock Classic Value | Buy | 5,682 | 1,886,045 | $38,248,993 |
| Q1 2023 | Hancock Classic Value | Buy | 1,880,363 | 1,880,363 | $40,277,375 |
| Q2 2022 | Renaissance Technologies LLC | Buy | 174,800 | 702,086 | $20,115 |
| Q1 2022 | Renaissance Technologies LLC | Buy | 136,700 | 527,286 | $17,016 |
| Q4 2021 | Renaissance Technologies LLC | Buy | 252,880 | 390,586 | $12,780 |
| Q3 2021 | Renaissance Technologies LLC | Buy | 42,700 | 137,706 | $5,231 |
| Q2 2021 | Renaissance Technologies LLC | Buy | 52,900 | 95,006 | $3,663 |
| Q1 2020 | Renaissance Technologies LLC | Buy | 21,600 | 42,106 | $1,128 |
| Q4 2018 | Renaissance Technologies LLC | Buy | 66,828 | 97,006 | $3,520 |
| Q4 2017 | Renaissance Technologies LLC | Buy | 91,491 | 131,078 | $5,694 |
| Q1 2016 | Renaissance Technologies LLC | Buy | 177,079 | 262,779 | $7,862 |
| Q4 2015 | Renaissance Technologies LLC | Buy | 31,400 | 85,700 | $2,786 |
| Q3 2015 | Renaissance Technologies LLC | Buy | 22,600 | 54,300 | $1,695 |
Frequently asked questions about COLB activity
Which institutional owners are buying COLB?
Institutional owners buying COLB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in COLB activity?
"Buy" means an investor increased their reported position in COLB compared to the prior reporting period. This reflects growing exposure to COLUMBIA BANKING SYSTEM INC (COLB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in COLB increasing?
Institutional interest in COLB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.