Columbia Banking System COLB Institutional Ownership

NASDAQ COLB

$28.60 -0.09 (-0.31%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

557 Institutions

Increased 269 48.3%

Unchanged 89 16.0%

Reduced 199 35.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

98.17%

▲+3.34 pp QoQ

Shares Held by Institutions

280.33Mn

of 285.56Mn outstanding

▲+4.09% QoQ

Shares Outstanding

285.56Mn

5.23Mn held outside 13F filers

Institutional Investors

557

filed 13F for Jun 2026

▲+33 vs prior quarter

Net Shares Added (QoQ)

+11.01Mn

accumulated since last quarter

Value of Holdings

$8.02Bn

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

Quarter ending 30 Jun, 2026

Columbia Banking System, Inc. (NASDAQ:COLB) appears in 556 institutional 13F filings for the quarter ending June 2026.

These investors collectively held 98.2% of Columbia Banking System's outstanding shares in June 2026, up from 94.8% in March 2026.
Their total shares held in COLB increased 4.09% quarter over quarter, and separately, investors owning Columbia Banking System increased 34.95% from a year ago.
During the quarter, 268 of these 556 funds increased positions in COLB, 199 reduced exposure, and 89 held steady.
Institutional investors collectively held 280.31Mn shares in Columbia Banking System as of June 2026, up by 11.01Mn shares quarter on quarter, and up 79.93Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in Columbia Banking System with 27.47Mn shares, accounting for 9.62% of total shares outstanding.
The most significant purchases of COLB for the quarter ending June 2026 came from Sixth Street Partners Management Company, L.P. (11.03Mn), NORGES BANK (2.97Mn), MACKENZIE FINANCIAL CORP (2.04Mn), Goldman Sachs Group Inc (1.23Mn), Azora Capital LP (1.03Mn).
Top sellers of COLB stock for the quarter ending June 2026 included Bank of New York Mellon Corp (3.64Mn), WELLINGTON MANAGEMENT GROUP LLP (3.26Mn), Channing Capital Management, LLC (2.88Mn), AMERICAN CENTURY COMPANIES INC (1.83Mn), Morgan Stanley (1.09Mn).
Columbia Banking System's 10 largest shareholders as of June 2026 include BlackRock, Inc. (27.47Mn), T. Rowe Price Investment Management, Inc. (15.63Mn), DIMENSIONAL FUND ADVISORS LP (13.91Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (13.68Mn), VANGUARD CAPITAL MANAGEMENT LLC (13.07Mn), State Street Corp (12.69Mn), WELLINGTON MANAGEMENT GROUP LLP (11.69Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (11.03Mn), Sixth Street Partners Management Company, L.P. (11.03Mn), PRICE T ROWE ASSOCIATES INC /MD/ (9.88Mn) per Business Quant data.

Form 13F Holdings

557 Institutional Holders

Report period 30 Jun, 2026

Total shares held 280.33Mn

Of outstanding 98.17%

#	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
8	Sixth Street Partners Management Company, L.P.	0001812095	11,025,378	3.86%	▲11,025,378	0.00%	$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

Showing 1 to 20 of 557 holders