COLUMBIA BANKING SYSTEM INC (COLB) Institutional Shareholders
COLUMBIA BANKING SYSTEM INC (COLB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $8.41B in COLB holdings during the latest filing period.
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 $816.44M, representing an estimated loss of -7.27% 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
$8.41B
Largest Holder
Blackrock, Inc.
Largest Position
$880.44M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
61
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 | $816,435,742 | -$64,007,249 | -7.27% | |
| T. Rowe Price Investment Management, Inc. | 0.33% | 15,633,948 | $501,069,000 | $464,640,935 | -$36,428,065 | -7.27% | |
| Dimensional Fund Advisors Lp | 0.08% | 13,906,292 | $445,698,340 | $413,294,998 | -$32,403,342 | -7.27% | |
| Vanguard Portfolio Management Llc | 0.02% | 13,678,183 | $438,385,765 | $406,515,599 | -$31,870,166 | -7.27% | |
| Vanguard Capital Management Llc | 0.01% | 13,072,525 | $418,974,426 | $388,515,443 | -$30,458,983 | -7.27% | |
| State Street Corp | 0.01% | 12,694,096 | $406,840,536 | $377,268,533 | -$29,572,003 | -7.27% | |
| Wellington Management Group Llp | 0.06% | 11,686,430 | $374,550,081 | $347,320,700 | -$27,229,381 | -7.27% | |
| Charles Schwab Investment Management Inc | 0.05% | 11,025,378 | $353,363,365 | $327,674,234 | -$25,689,131 | -7.27% | |
| Price T Rowe Associates Inc | 0.03% | 9,879,006 | $316,623,000 | $293,604,058 | -$23,018,942 | -7.27% | |
| American Century Companies Inc | 0.11% | 7,903,579 | $253,309,739 | $234,894,368 | -$18,415,371 | -7.27% | |
| Massachusetts Financial Services Co | 0.06% | 5,958,440 | $192,983,411 | $177,084,837 | -$15,898,574 | -8.24% | |
| Geode Capital Management, Llc | 0.01% | 5,795,510 | $185,788,888 | $172,242,557 | -$13,546,331 | -7.29% | |
| Holdco Asset Management, Lp | 11.77% | 5,722,786 | $183,415,291 | $170,081,200 | -$13,334,091 | -7.27% | |
| Invesco Ltd. | 0.01% | 4,686,223 | $150,193,447 | $139,274,548 | -$10,918,899 | -7.27% | |
| Silvercrest Asset Management Group Llc | 0.84% | 4,005,647 | $128,381,012 | $119,047,829 | -$9,333,183 | -7.27% | |
| Morgan Stanley | 0.01% | 3,816,175 | $122,308,480 | $113,416,721 | -$8,891,759 | -7.27% | |
| Nomura Asset Management International Inc. | 0.18% | 3,807,940 | $122,045,000 | $113,171,977 | -$8,873,023 | -7.27% | |
| Bank Of New York Mellon Corp | 0.02% | 3,771,212 | $120,867,350 | $112,080,421 | -$8,786,929 | -7.27% | |
| Mackenzie Financial Corp | 0.10% | 3,176,857 | $101,818,267 | $94,416,190 | -$7,402,077 | -7.27% | |
| Epoch Investment Partners, Inc. | 0.57% | 3,143,704 | $100,755,713 | $93,430,883 | -$7,324,830 | -7.27% | |
| Norges Bank | 0.01% | 2,966,686 | $95,082,286 | $88,169,908 | -$6,912,378 | -7.27% | |
| Ubs Group Ag | 0.01% | 2,636,227 | $84,491,076 | $78,348,666 | -$6,142,410 | -7.27% | |
| Northern Trust Corp | 0.01% | 2,611,337 | $83,693,351 | $77,608,936 | -$6,084,415 | -7.27% | |
| Goldman Sachs Group Inc | 0.01% | 2,571,314 | $82,410,620 | $76,419,452 | -$5,991,168 | -7.27% | |
| Fisher Asset Management, Llc | 0.02% | 2,481,754 | $79,540,215 | $73,757,729 | -$5,782,486 | -7.27% | |
| Manufacturers Life Insurance Company, The | 0.05% | 2,149,943 | $68,905,673 | $63,896,306 | -$5,009,367 | -7.27% | |
| Hancock Classic Value | Richard Pzena | 0.20% | 2,129,322 | $68,244,770 | $63,283,450 | -$4,961,320 | -7.27% |
| First Trust Advisors Lp | 0.04% | 1,978,842 | $63,421,886 | $58,811,184 | -$4,610,702 | -7.27% | |
| Vanguard Fiduciary Trust Co | 0.01% | 1,831,172 | $58,689,063 | $54,422,432 | -$4,266,631 | -7.27% | |
| Vaughan Nelson Investment Management, L.P. | 0.49% | 1,713,172 | $54,907,162 | $50,915,472 | -$3,991,690 | -7.27% | |
| Cooke & Bieler Lp | 0.56% | 1,500,913 | $48,104,262 | $44,607,134 | -$3,497,128 | -7.27% | |
| Bank Of America Corp | 0.00% | 1,407,290 | $45,103,641 | $41,824,659 | -$3,278,982 | -7.27% | |
| Quantinno Capital Management Lp | 0.05% | 1,323,768 | $42,426,769 | $39,342,385 | -$3,084,384 | -7.27% | |
| Systematic Financial Management Lp | 0.82% | 1,289,296 | $41,321,961 | $38,317,877 | -$3,004,084 | -7.27% | |
| Bnp Paribas Asset Management Holding S.A. | 0.04% | 1,171,343 | $37,541,543 | $34,812,314 | -$2,729,229 | -7.27% | |
| Jpmorgan Chase & Co | 0.00% | 1,111,048 | $35,954,125 | $33,020,347 | -$2,933,778 | -8.16% | |
| Stieven Capital Advisors, L.P. | 6.56% | 1,071,732 | $34,349,011 | $31,851,875 | -$2,497,136 | -7.27% | |
| Azora Capital Lp | 1.39% | 1,028,488 | $32,963,040 | $30,566,663 | -$2,396,377 | -7.27% | |
| Raymond James Financial Inc | 0.01% | 1,012,894 | $32,463,265 | $30,103,210 | -$2,360,055 | -7.27% | |
| Lsv Asset Management | 0.06% | 980,784 | $31,434,000 | $29,148,900 | -$2,285,100 | -7.27% | |
| Balyasny Asset Management L.P. | 0.05% | 913,570 | $29,279,919 | $27,151,300 | -$2,128,619 | -7.27% | |
| D. E. Shaw & Co., Inc. | 0.02% | 897,711 | $28,771,638 | $26,679,971 | -$2,091,667 | -7.27% | |
| Easterly Investment Partners Llc | 1.44% | 884,032 | $28,333,226 | $26,273,431 | -$2,059,795 | -7.27% | |
| Leeward Investments, Llc - Ma | 1.26% | 861,441 | $27,609,184 | $25,602,027 | -$2,007,157 | -7.27% | |
| Td Asset Management Inc | 0.02% | 832,559 | $26,683,516 | $24,743,653 | -$1,939,863 | -7.27% | |
| Ameriprise Financial Inc | 0.01% | 828,827 | $26,564,436 | $24,632,738 | -$1,931,698 | -7.27% | |
| Interval Partners, Lp | 0.81% | 782,925 | $25,092,746 | $23,268,531 | -$1,824,215 | -7.27% | |
| Jane Street Group, Llc | 0.02% | 772,641 | $24,763,144 | $22,962,891 | -$1,800,253 | -7.27% | |
| Snyder Capital Management L P | 0.43% | 768,126 | $24,618,438 | $22,828,705 | -$1,789,733 | -7.27% | |
| Nuveen, Llc | 0.01% | 752,591 | $24,120,529 | $22,367,005 | -$1,753,524 | -7.27% |
Frequently asked questions about COLB
Who owns the most COLB stock?
The largest holders of COLB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for COLUMBIA BANKING SYSTEM INC (COLB).
Is COLB widely held by superinvestors?
Many widely followed stocks like COLB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly COLB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.