Who owns Columbia Banking System (COLB)
Which tracked institutional funds hold COLB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See COLB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
173 tracked funds added or opened COLB while 85 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
COLB’s largest tracked holder by dollar value, BlackRock, Inc., sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes COLB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in COLB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2026-Q1 and 2026-Q2, across 518 tracked filers holding COLB, 252 increased or opened the position and 277 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in COLB between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 30
- Azora Capital LP$33M
- D. E. Shaw & Co., Inc.$29M
- TUDOR INVESTMENT CORP ET AL$7M
- Empirical Financial Services, LLC d.b.a. Empirical Wealth Management$5M
- Campbell & CO Investment Adviser LLC$5M
- Jupiter Topco LLC$4M
Full exits 44
- T. Rowe Price Investment Management, Inc.$437M
- CITADEL ADVISORS LLC$87M
- Capital World Investors$29M
- LSV ASSET MANAGEMENT$27M
- PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO$20M
- MILLENNIUM MANAGEMENT LLC$15M
Largest adds
- BlackRock, Inc.$221M
- DIMENSIONAL FUND ADVISORS LP$74M
- MACKENZIE FINANCIAL CORP$71M
- PRICE T ROWE ASSOCIATES INC /MD/$70M
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$67M
- STATE STREET CORP$65M
Largest trims
- Bank of New York Mellon Corp$82M
- Channing Capital Management, LLC$77M
- WELLINGTON MANAGEMENT GROUP LLP$35M
- NEW YORK STATE COMMON RETIREMENT FUND$17M
- ALGEBRIS (UK) LTD$16M
- AQR CAPITAL MANAGEMENT LLC$15M
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 27,470,920 | $880M | 11.6% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP added | 13,906,292 | $446M | 5.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 13,678,183 | $438M | 5.8% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 13,072,525 | $419M | 5.5% | 2026-Q2 |
| STATE STREET CORP added | 12,694,096 | $407M | 5.4% | 2026-Q2 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 11,686,430 | $375M | 4.9% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 11,025,378 | $353M | 4.7% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 9,879,006 | $317M | 4.2% | 2026-Q2 |
| AMERICAN CENTURY COMPANIES INC trimmed | 7,903,579 | $253M | 3.3% | 2026-Q2 |
| FRANKLIN RESOURCES INC trimmed | 6,101,719 | $196M | 2.6% | 2026-Q2 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 5,958,440 | $193M | 2.5% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 5,795,510 | $186M | 2.5% | 2026-Q2 |
| HoldCo Asset Management, LP | 5,722,786 | $183M | 2.4% | 2026-Q2 |
| Invesco Ltd. added | 4,686,223 | $150M | 2.0% | 2026-Q2 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 4,005,647 | $128M | 1.7% | 2026-Q2 |
| MORGAN STANLEY trimmed | 3,816,175 | $122M | 1.6% | 2026-Q2 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 3,807,940 | $122M | 1.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 3,771,212 | $121M | 1.6% | 2026-Q2 |
| MACKENZIE FINANCIAL CORP added | 3,176,857 | $102M | 1.3% | 2026-Q2 |
| Epoch Investment Partners, Inc. added | 3,143,704 | $101M | 1.3% | 2026-Q2 |
| NORGES BANK added | 2,966,686 | $95M | 1.3% | 2026-Q2 |
| UBS Group AG trimmed | 2,636,227 | $84M | 1.1% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 2,611,337 | $84M | 1.1% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC added | 2,571,314 | $82M | 1.1% | 2026-Q2 |
| Fisher Asset Management, LLC added | 2,481,754 | $80M | 1.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE added | 2,149,943 | $69M | 0.9% | 2026-Q2 |
| PZENA INVESTMENT MANAGEMENT LLC added | 2,129,322 | $68M | 0.9% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 1,978,842 | $63M | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 1,831,172 | $59M | 0.8% | 2026-Q2 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. added | 1,713,172 | $55M | 0.7% | 2026-Q2 |
| COOKE & BIELER LP trimmed | 1,500,913 | $48M | 0.6% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 1,407,290 | $45M | 0.6% | 2026-Q2 |
| Quantinno Capital Management LP added | 1,323,768 | $42M | 0.6% | 2026-Q2 |
| SYSTEMATIC FINANCIAL MANAGEMENT LP trimmed | 1,289,296 | $41M | 0.5% | 2026-Q2 |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. trimmed | 1,171,343 | $38M | 0.5% | 2026-Q2 |
| JPMORGAN CHASE & CO added | 1,111,048 | $36M | 0.5% | 2026-Q2 |
| Stieven Capital Advisors, L.P. trimmed | 1,071,732 | $34M | 0.5% | 2026-Q2 |
| Azora Capital LP added | 1,028,488 | $33M | 0.4% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 1,012,894 | $32M | 0.4% | 2026-Q2 |
| BALYASNY ASSET MANAGEMENT L.P. trimmed | 913,570 | $29M | 0.4% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 897,711 | $29M | 0.4% | 2026-Q2 |
| EASTERLY INVESTMENT PARTNERS LLC added | 884,032 | $28M | 0.4% | 2026-Q2 |
| Leeward Investments, LLC - MA trimmed | 861,441 | $28M | 0.4% | 2026-Q2 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 842,527 | $27M | 0.4% | 2026-Q2 |
| TD Asset Management Inc added | 832,559 | $27M | 0.4% | 2026-Q2 |
| AMERIPRISE FINANCIAL INC trimmed | 828,827 | $27M | 0.4% | 2026-Q2 |
| Interval Partners, LP added | 782,925 | $25M | 0.3% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 772,641 | $25M | 0.3% | 2026-Q2 |
| SNYDER CAPITAL MANAGEMENT L P added | 768,126 | $25M | 0.3% | 2026-Q2 |
| Nuveen, LLC trimmed | 752,591 | $24M | 0.3% | 2026-Q2 |
| RHUMBLINE ADVISERS trimmed | 751,314 | $24M | 0.3% | 2026-Q2 |
| Rhino Investment Partners, Inc added | 748,420 | $24M | 0.3% | 2026-Q2 |
| Jain Global LLC added | 741,638 | $24M | 0.3% | 2026-Q2 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 712,060 | $23M | 0.3% | 2026-Q2 |
| ENVESTNET ASSET MANAGEMENT INC added | 696,988 | $22M | 0.3% | 2026-Q2 |
| PRINCIPAL FINANCIAL GROUP INC trimmed | 657,256 | $21M | 0.3% | 2026-Q2 |
| SEI INVESTMENTS CO trimmed | 633,781 | $20M | 0.3% | 2026-Q2 |
| Lighthouse Investment Partners, LLC trimmed | 631,221 | $20M | 0.3% | 2026-Q2 |
| STIFEL FINANCIAL CORP added | 621,452 | $20M | 0.3% | 2026-Q2 |
| Boston Partners trimmed | 603,696 | $19M | 0.3% | 2026-Q2 |
| Swiss National Bank trimmed | 581,893 | $19M | 0.2% | 2026-Q2 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 577,525 | $19M | 0.2% | 2026-Q2 |
| LONE PEAK GLOBAL INVESTORS LLC added | 569,183 | $18M | 0.2% | 2026-Q2 |
| NORDEA INVESTMENT MANAGEMENT AB trimmed | 496,928 | $16M | 0.2% | 2026-Q2 |
| ROYAL BANK OF CANADA added | 486,054 | $16M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System trimmed | 477,743 | $15M | 0.2% | 2026-Q2 |
| Universal- Beteiligungs- und Servicegesellschaft mbH trimmed | 467,363 | $15M | 0.2% | 2026-Q2 |
| Bridgewater Associates, LP added | 466,337 | $15M | 0.2% | 2026-Q2 |
| PALISADE CAPITAL MANAGEMENT, LP trimmed | 457,050 | $15M | 0.2% | 2026-Q2 |
| Clearbridge Investments, LLC added | 433,243 | $14M | 0.2% | 2026-Q2 |
| Aristotle Capital Boston, LLC trimmed | 420,721 | $13M | 0.2% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 417,635 | $13M | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 416,542 | $13M | 0.2% | 2026-Q2 |
| Ceredex Value Advisors LLC trimmed | 413,000 | $13M | 0.2% | 2026-Q2 |
| Legal & General Group Plc added | 407,151 | $13M | 0.2% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 392,715 | $11M | 0.1% | 2026-Q2 |
| MALTESE CAPITAL MANAGEMENT LLC added | 387,000 | $12M | 0.2% | 2026-Q2 |
| First Eagle Investment Management, LLC added | 384,600 | $12M | 0.2% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 384,544 | $12M | 0.2% | 2026-Q2 |
| BW Gestao de Investimentos Ltda. trimmed | 379,933 | $12M | 0.2% | 2026-Q2 |
| Phocas Financial Corp. trimmed | 353,629 | $11M | 0.1% | 2026-Q2 |
| XTX Topco Ltd added | 350,389 | $11M | 0.1% | 2026-Q2 |
| Carlson Capital, L.P. added | 347,529 | $11M | 0.1% | 2026-Q2 |
| Channing Capital Management, LLC trimmed | 344,762 | $11M | 0.1% | 2026-Q2 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 335,847 | $11M | 0.1% | 2026-Q2 |
| Creative Planning added | 333,801 | $11M | 0.1% | 2026-Q2 |
| Gilman Hill Asset Management, LLC added | 324,479 | $10M | 0.1% | 2026-Q2 |
| IEQ CAPITAL, LLC trimmed | 320,277 | $10M | 0.1% | 2026-Q2 |
| HUNTINGTON NATIONAL BANK trimmed | 312,065 | $10M | 0.1% | 2026-Q2 |
| ZWJ INVESTMENT COUNSEL INC added | 311,681 | $10M | 0.1% | 2026-Q2 |
| GABELLI FUNDS LLC added | 310,018 | $10M | 0.1% | 2026-Q2 |
| Brevan Howard Capital Management LP trimmed | 308,212 | $10M | 0.1% | 2026-Q2 |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC added | 303,329 | $10M | 0.1% | 2026-Q2 |
| Retirement Systems of Alabama trimmed | 299,414 | $10M | 0.1% | 2026-Q2 |
| VANGUARD ASSET MANAGEMENT, Ltd added | 278,682 | $9M | 0.1% | 2026-Q2 |
| Moody Aldrich Partners LLC trimmed | 261,163 | $8M | 0.1% | 2026-Q2 |
| Mirae Asset Global Investments Co., Ltd. added | 241,911 | $8M | 0.1% | 2026-Q2 |
| ALGEBRIS (UK) LTD trimmed | 234,605 | $7M | 0.1% | 2026-Q2 |
| AQR CAPITAL MANAGEMENT LLC trimmed | 232,377 | $7M | 0.1% | 2026-Q2 |
| Walleye Capital LLC added | 227,955 | $7M | 0.1% | 2026-Q2 |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.