Dark Forest Capital Management’s Columbia Banking Systems COLB Stock Holding History

Dark Forest Capital Management’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 Q1	$227K	Sell	8,278 -96,922	-92%	-$2.8M	0.02%	722
2025 Q4	$2.94M	Buy	+105,200	New	+$2.85M	0.13%	241
2023 Q3	–	Sell	-25,488	Closed	-$517K	–	1113
2023 Q2	$517K	Buy	+25,488	New	+$538K	0.05%	617
2021 Q4	–	Sell	-311	Closed	-$12K	–	1490
2021 Q3	$12K	Buy	311 +244	+364%	+$8.7K	﹤0.01%	947
2021 Q2	$3K	Buy	+67	New	+$2.85K	﹤0.01%	737

Other funds holding COLB

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Dark Forest Capital Management's COLB Position: Q1 2026 in Review

Dark Forest Capital Management reduced its Columbia Banking Systems (COLB) stake by 92% in Q1 2026, selling an estimated $2.8M and leaving 8,278 shares worth $227K. The position accounts for 0.02% of the portfolio, ranked #722.

Dark Forest Capital Management first reported a position in COLB in Q2 2021 and has held it in 5 quarters since. The position peaked at $2.94M in Q4 2025. 524 funds tracked by Wall St. Rank hold COLB as of Q1 2026.

Dark Forest Capital Management held 8,278 shares of Columbia Banking Systems worth $227K as of Q1 2026.
Dark Forest Capital Management sold 96,922 Columbia Banking Systems shares in Q1 2026, an estimated $2.8M.
Columbia Banking Systems made up 0.02% of Dark Forest Capital Management's portfolio in Q1 2026, its #722 holding.
Dark Forest Capital Management first reported a position in Columbia Banking Systems in Q2 2021 and has held it in 5 quarters since.
Dark Forest Capital Management's Columbia Banking Systems position peaked at $2.94M in Q4 2025.
524 funds tracked by Wall St. Rank held Columbia Banking Systems as of Q1 2026.

Based on Dark Forest Capital Management's 13F filing for Q1 2026, filed 15 May 2026.