Mariner
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Mariner’s Columbia Banking Systems COLB Stock Holding History

Mariner’s Portfolio COLB Stock Details COLB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.08M Buy
33,671
+14,544
+76% +$432K ﹤0.01% 1889
2026
Q1 		$525K Buy
19,127
+1,624
+9% +$47K ﹤0.01% 2462
2025
Q4 		$491K Sell
17,503
-17,688
-50% -$479K ﹤0.01% 2456
2025
Q3 		$906K Buy
35,191
+17,958
+104% +$456K ﹤0.01% 1990
2025
Q2 		$403K Sell
17,233
-4,200
-20% -$97.4K ﹤0.01% 2498
2025
Q1 		$535K Sell
21,433
-5,788
-21% -$154K ﹤0.01% 2154
2024
Q4 		$735K Buy
27,221
+3,950
+17% +$113K ﹤0.01% 1865
2024
Q3 		$607K Buy
23,271
+9,981
+75% +$238K ﹤0.01% 1980
2024
Q2 		$264K Sell
13,290
-359
-3% -$6.83K ﹤0.01% 2556
2024
Q1 		$264K Sell
13,649
-4,178
-23% -$86K ﹤0.01% 2551
2023
Q4 		$476K Buy
17,827
+2,362
+15% +$52.5K ﹤0.01% 1963
2023
Q3 		$314K Buy
15,465
+803
+5% +$16.8K ﹤0.01% 2114
2023
Q2 		$297K Buy
+14,662
New +$310K ﹤0.01% 2128
2023
Q1 		– Sell
-11,826
Closed -$356K – 2808
2022
Q4 		$356K Sell
11,826
-2,615
-18% -$83.1K ﹤0.01% 1891
2022
Q3 		$417K Buy
+14,441
New +$435K ﹤0.01% 1528

Other funds holding COLB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Mariner's COLB Position: Q2 2026 in Review

Mariner increased its Columbia Banking Systems (COLB) stake by 76% in Q2 2026, buying an estimated $432K and bringing the position to 33,671 shares worth $1.08M. The position accounts for ﹤0.01% of the portfolio, ranked #1889.

Mariner first reported a position in COLB in Q3 2022 and has held it in 15 quarters since. 555 funds tracked by Wall St. Rank hold COLB as of Q2 2026.

  • Mariner held 33,671 shares of Columbia Banking Systems worth $1.08M as of Q2 2026.
  • Mariner bought 14,544 Columbia Banking Systems shares in Q2 2026, an estimated $432K.
  • Columbia Banking Systems made up ﹤0.01% of Mariner's portfolio in Q2 2026, its #1889 holding.
  • Mariner first reported a position in Columbia Banking Systems in Q3 2022 and has held it in 15 quarters since.
  • 555 funds tracked by Wall St. Rank held Columbia Banking Systems as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.