Columbia Banking System COLB Institutional Ownership

NASDAQ COLB

$30.48 +0.06 (+0.18%)

At close: Nov 6, 2026 · 4:00 PM EST

Institutions by Trading Activity

558 Institutions

Increased 269 48.2%

Unchanged 90 16.1%

Reduced 199 35.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

94.27%

▼-0.54 pp QoQ

Shares Held by Institutions

269.21Mn

of 285.56Mn outstanding

▼-2.41% QoQ

Shares Outstanding

285.56Mn

16.35Mn held outside 13F filers

Institutional Investors

558

filed 13F for Jun 2026

▲+33 vs prior quarter

Net Shares Added (QoQ)

-6.64Mn

distributed since last quarter

Value of Holdings

$8.19Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Updated Nov 4, 2026

Columbia Banking System, Inc. (NASDAQ:COLB) was held by 558 institutional investors that filed 13F reports for the quarter ended June 30, 2026.

Together they owned 94.27% of the outstanding stock in Q2 2026, down from 94.82% a quarter earlier.
Total holdings of Columbia Banking System shares fell 2.41% from Q1 2026, and the number of holders rose 35.44% from Q2 2025.
Among the 558 holders of Columbia Banking System, 269 added to their positions, 199 reduced their stakes and 90 left their positions unchanged.
Institutional investors held 269.21Mn shares of Columbia Banking System in total at the end of Q2 2026, down 6.64Mn from the prior quarter and up 68.82Mn from a year earlier.
BlackRock, Inc. led 13F holders of COLB with 27.47Mn shares as of June 30, 2026, or 9.62% of shares outstanding.
Holders that added the most shares of Columbia Banking System in Q2 2026 were Mackenzie Financial Corp (+2.04Mn shares), Goldman Sachs Group Inc (+1.23Mn shares), T. Rowe Price Associates Inc (+905.59K shares), First Trust Advisors LP (+775.8K shares) and Jane Street Group, LLC (+627.11K shares).
Among holders that kept a stake in Columbia Banking System, the biggest sellers in Q2 2026 were Bank of New York Mellon Corp (-3.64Mn shares), Wellington Management Group LLP (-3.26Mn shares), Channing Capital Management, LLC (-2.88Mn shares), American Century Companies Inc (-1.83Mn shares) and Morgan Stanley (-1.09Mn shares).
Per Business Quant data, the 10 largest holders of Columbia Banking System at the end of Q2 2026 were BlackRock, Inc. (27.47Mn shares), T. Rowe Price Investment Management, Inc. (15.63Mn shares), Dimensional Fund Advisors LP (13.91Mn shares), Vanguard Portfolio Management LLC (13.68Mn shares), Vanguard Capital Management LLC (13.07Mn shares), State Street Corp (12.69Mn shares), Wellington Management Group LLP (11.69Mn shares), Charles Schwab Investment Management Inc (11.03Mn shares), T. Rowe Price Associates Inc (9.88Mn shares) and American Century Companies Inc (7.9Mn shares).

Form 13F Holdings

559 Institutional Holders

Report period 30 Jun, 2026

Total shares held 269.21Mn

Of outstanding 94.27%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	27,470,920	9.62%	▲405,919	+1.50%	$880.44Mn
2	T. Rowe Price Investment Management, Inc.	0001897612	15,633,948	5.47%	▼281,577	-1.77%	$501.07K
3	DIMENSIONAL FUND ADVISORS LP	0000354204	13,906,292	4.87%	▲356,689	+2.63%	$445.70Mn
4	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	13,678,183	4.79%	▼661,533	-4.61%	$438.39Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	13,072,525	4.58%	▼152,100	-1.15%	$418.97Mn
6	State Street Corp	0000093751	12,694,096	4.45%	▲217,936	+1.75%	$406.84Mn
7	WELLINGTON MANAGEMENT GROUP LLP	0000902219	11,686,430	4.09%	▼3,257,845	-21.80%	$374.55Mn
8	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	11,025,378	3.86%	▲585,587	+5.61%	$353.36Mn
9	PRICE T ROWE ASSOCIATES INC /MD/	0000080255	9,879,006	3.46%	▲905,586	+10.09%	$316.62K
10	AMERICAN CENTURY COMPANIES INC	0000748054	7,903,579	2.77%	▼1,832,490	-18.82%	$253.31Mn
11	Franklin Templeton Inc	0000038777	6,101,719	2.14%	▼85,428	-1.38%	$195.56Mn
12	MASSACHUSETTS FINANCIAL SERVICES CO /MA/	0000912938	5,958,440	2.09%	▼65,934	-1.09%	$192.98Mn
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	5,795,510	2.03%	▼69,372	-1.18%	$185.79Mn
14	HoldCo Asset Management, LP	0001724246	5,722,786	2.00%	0	0.00%	$183.42Mn
15	Invesco Ltd.	0000914208	4,686,223	1.64%	▲589,203	+14.38%	$150.19Mn
16	SILVERCREST ASSET MANAGEMENT GROUP LLC	0001232395	4,005,647	1.40%	▼141,782	-3.42%	$128.38Mn
17	Morgan Stanley	0000895421	3,816,175	1.34%	▼1,086,006	-22.15%	$122.31Mn
18	NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	0000921739	3,807,940	1.33%	▼93,405	-2.39%	$122.05Mn
19	Bank of New York Mellon Corp	0001390777	3,771,212	1.32%	▼3,640,551	-49.12%	$120.87Mn
20	MACKENZIE FINANCIAL CORP	0000919859	3,176,857	1.11%	▲2,042,060	+179.95%	$101.82Mn

Showing 1 to 20 of 559 holders