COLUMBIA BANKING SYSTEM INC (COLB) Institutional Ownership and Insiders Activity
COLUMBIA BANKING SYSTEM INC (COLB) is widely held by institutional investors, with 542 firms reporting positions valued at approximately $8.41B based on SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is the largest disclosed holder, reporting approximately $880.44M in COLB holdings in its latest filing.
Recent insider activity includes 5 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.
Institutional Holders
542
Total Reported Value
$8.41B
Largest Holder
Blackrock, Inc.
Largest Position
$880.44M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
87
Funds Exiting Positions
67
Top Institutional Owners
View all- Blackrock, Inc.$880.44M
- T. Rowe Price Investment Management, Inc.$501.07M
- Dimensional Fund Advisors Lp$445.70M
- Vanguard Portfolio Management Llc$438.39M
- Vanguard Capital Management Llc$418.97M
COLB News
All news- Easterly Investment Partners Q2 Activity: Major Purchases & Sales in Focus
Jul 26, 2026 · valut.ai
- Sippican Capital Advisors Portfolio Shifts in Q2 2026: Focus on Financial Services and Technology
Jul 25, 2026 · valut.ai
- Moody Aldrich Partners Q2 2026 Portfolio Activity Analysis
Jul 17, 2026 · valut.ai
Related COLB Institutional Insights:
- COLB 13F Institutional Holders
- COLB Top Institutional Shareholders
- COLB Institutional Ownership Changes
- Financial Services Sector Institutional Ownership
- Financial Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Financial Services Stocks By Institutional Investors
- Most Sold Financial Services Stocks By Institutional Investors
- COLB Insider Trading & SEC Form 4 Activity
- COLB Articles
- Top Institutional Investor Stock Rankings