COLB Institutional Ownership & Shareholders
COLUMBIA BANKING SYSTEM INC (COLB) is currently held by 542 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $8.37B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of COLB tracked by InsiderSet, reporting ownership valued at approximately $880.44M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $843.36M, representing an estimated loss of -4.21% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 52% of the total disclosed COLB value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., T. Rowe Price Investment Management, Inc., Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in COLUMBIA BANKING SYSTEM INC (COLB).
This page ranks the largest institutional COLB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
542
Total Reported Value
$8.37B
Largest Holder
Blackrock, Inc.
Largest Position
$880.44M
Insider Transactions (90d)
11
Latest Filing Quarter
Q2 2026
New Institutional Positions
55
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 27,470,920 | $880,442,991 | $843,357,244 | -$37,085,747 | -4.21% | |
| T. Rowe Price Investment Management, Inc. | 0.33% | 15,633,948 | $501,069,000 | $479,962,204 | -$21,106,796 | -4.21% | |
| Dimensional Fund Advisors Lp | 0.08% | 13,906,292 | $445,698,340 | $426,923,164 | -$18,775,176 | -4.21% | |
| Vanguard Portfolio Management Llc | 0.02% | 13,678,183 | $438,385,765 | $419,920,218 | -$18,465,547 | -4.21% | |
| Vanguard Capital Management Llc | 0.01% | 13,072,525 | $418,974,426 | $401,326,518 | -$17,647,909 | -4.21% | |
| State Street Corp | 0.01% | 12,694,096 | $406,840,536 | $389,708,747 | -$17,131,789 | -4.21% | |
| Wellington Management Group Llp | 0.06% | 11,686,430 | $374,550,081 | $358,773,401 | -$15,776,680 | -4.21% | |
| Charles Schwab Investment Management Inc | 0.05% | 11,025,378 | $353,363,365 | $338,479,105 | -$14,884,260 | -4.21% | |
| Price T Rowe Associates Inc | 0.03% | 9,879,006 | $316,623,000 | $303,285,484 | -$13,337,516 | -4.21% | |
| American Century Companies Inc | 0.11% | 7,903,579 | $253,309,739 | $242,639,875 | -$10,669,864 | -4.21% | |
| Massachusetts Financial Services Co | 0.06% | 5,958,440 | $192,983,411 | $182,924,108 | -$10,059,303 | -5.21% | |
| Geode Capital Management, Llc | 0.01% | 5,795,510 | $185,788,888 | $177,922,157 | -$7,866,731 | -4.23% | |
| Holdco Asset Management, Lp | 11.77% | 5,722,786 | $183,415,291 | $175,689,530 | -$7,725,761 | -4.21% | |
| Invesco Ltd. | 0.01% | 4,686,223 | $150,193,447 | $143,867,046 | -$6,326,401 | -4.21% | |
| Silvercrest Asset Management Group Llc | 0.84% | 4,005,647 | $128,381,012 | $122,973,363 | -$5,407,649 | -4.21% | |
| Morgan Stanley | 0.01% | 3,816,175 | $122,308,480 | $117,156,573 | -$5,151,908 | -4.21% | |
| Nomura Asset Management International Inc. | 0.18% | 3,807,940 | $122,045,000 | $116,903,758 | -$5,141,242 | -4.21% | |
| Bank Of New York Mellon Corp | 0.02% | 3,771,212 | $120,867,350 | $115,776,208 | -$5,091,142 | -4.21% | |
| Mackenzie Financial Corp | 0.11% | 3,615,152 | $103,393,347 | $110,985,166 | +$7,591,819 | +7.34% | |
| Epoch Investment Partners, Inc. | 0.57% | 3,143,704 | $100,755,713 | $96,511,713 | -$4,244,000 | -4.21% | |
| Norges Bank | 0.01% | 2,966,686 | $95,082,286 | $91,077,260 | -$4,005,026 | -4.21% | |
| Ubs Group Ag | 0.01% | 2,636,227 | $84,491,076 | $80,932,169 | -$3,558,907 | -4.21% | |
| Northern Trust Corp | 0.01% | 2,611,337 | $83,693,351 | $80,168,046 | -$3,525,305 | -4.21% | |
| Goldman Sachs Group Inc | 0.01% | 2,571,314 | $82,410,620 | $78,939,340 | -$3,471,280 | -4.21% | |
| Fisher Asset Management, Llc | 0.02% | 2,481,754 | $79,540,215 | $76,189,848 | -$3,350,367 | -4.21% | |
| Manufacturers Life Insurance Company, The | 0.05% | 2,149,943 | $68,905,673 | $66,003,250 | -$2,902,423 | -4.21% | |
| First Trust Advisors Lp | 0.04% | 1,978,842 | $63,421,886 | $60,750,449 | -$2,671,437 | -4.21% | |
| Pzena Investment Management | Richard Pzena | 0.17% | 2,084,555 | $59,618,273 | $63,995,839 | +$4,377,566 | +7.34% |
| Vanguard Fiduciary Trust Co | 0.01% | 1,831,172 | $58,689,063 | $56,216,980 | -$2,472,083 | -4.21% | |
| Vaughan Nelson Investment Management, L.P. | 0.49% | 1,713,172 | $54,907,162 | $52,594,380 | -$2,312,782 | -4.21% | |
| Bank Of America Corp | 0.00% | 1,407,290 | $45,103,641 | $43,203,803 | -$1,899,838 | -4.21% | |
| Quantinno Capital Management Lp | 0.05% | 1,323,768 | $42,426,769 | $40,639,678 | -$1,787,091 | -4.21% | |
| Systematic Financial Management Lp | 0.82% | 1,289,296 | $41,321,961 | $39,581,387 | -$1,740,574 | -4.21% | |
| Bnp Paribas Asset Management Holding S.A. | 0.04% | 1,171,343 | $37,541,543 | $35,960,230 | -$1,581,313 | -4.21% | |
| Jpmorgan Chase & Co | 0.00% | 1,111,048 | $35,954,125 | $34,109,174 | -$1,844,951 | -5.13% | |
| Cooke & Bieler Lp | 0.55% | 1,214,867 | $34,745,196 | $37,296,417 | +$2,551,221 | +7.34% | |
| Stieven Capital Advisors, L.P. | 6.56% | 1,071,732 | $34,349,011 | $32,902,172 | -$1,446,839 | -4.21% | |
| Azora Capital Lp | 1.39% | 1,028,488 | $32,963,040 | $31,574,582 | -$1,388,458 | -4.21% | |
| Raymond James Financial Inc | 0.01% | 1,012,894 | $32,463,265 | $31,095,846 | -$1,367,419 | -4.21% | |
| Lsv Asset Management | 0.06% | 980,784 | $31,434,000 | $30,110,069 | -$1,323,931 | -4.21% | |
| Balyasny Asset Management L.P. | 0.05% | 913,570 | $29,279,919 | $28,046,599 | -$1,233,320 | -4.21% | |
| D. E. Shaw & Co., Inc. | 0.02% | 897,711 | $28,771,638 | $27,559,728 | -$1,211,910 | -4.21% | |
| Easterly Investment Partners Llc | 1.44% | 884,032 | $28,333,226 | $27,139,782 | -$1,193,444 | -4.21% | |
| Td Asset Management Inc | 0.02% | 832,559 | $26,683,516 | $25,559,561 | -$1,123,955 | -4.21% | |
| Ameriprise Financial Inc | 0.01% | 828,827 | $26,564,436 | $25,444,989 | -$1,119,447 | -4.21% | |
| Interval Partners, Lp | 0.81% | 782,925 | $25,092,746 | $24,035,798 | -$1,056,949 | -4.21% | |
| Jane Street Group, Llc | 0.02% | 772,641 | $24,763,144 | $23,720,079 | -$1,043,065 | -4.21% | |
| Snyder Capital Management L P | 0.43% | 768,126 | $24,618,438 | $23,581,468 | -$1,036,970 | -4.21% | |
| Nuveen, Llc | 0.01% | 752,591 | $24,120,529 | $23,104,544 | -$1,015,985 | -4.21% | |
| Rhumbline Advisers | 0.02% | 751,314 | $24,079,562 | $23,065,340 | -$1,014,222 | -4.21% |
Frequently asked questions about COLB
Who are the largest institutional holders of COLB?
The largest institutional holders of COLB reported in the latest SEC Form 13F filings include Blackrock, Inc., T. Rowe Price Investment Management, Inc., Dimensional Fund Advisors Lp, Vanguard Portfolio Management Llc, and Vanguard Capital Management Llc. InsiderSet ranks institutional holders by their latest reported COLB position.
What is COLB institutional ownership?
This page tracks COLB positions reported by institutional investment managers through SEC Form 13F. COLUMBIA BANKING SYSTEM INC (COLB) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own COLB?
InsiderSet currently tracks 542 institutional managers reporting COLB holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of COLB shareholders.
How much COLB stock do institutions own?
Institutional investment managers disclosed approximately $8.37B in COLB holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was COLB institutional ownership last updated?
The latest COLB institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional COLB holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its COLB position after the reporting date.
Are institutions buying or selling COLB?
Institutional buying and selling can be analyzed by comparing COLB positions across consecutive 13F reporting periods. InsiderSet's COLB Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View COLB ownership changes.
How has COLB institutional ownership changed over time?
InsiderSet tracks COLB institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.