Arrowstreet Capital’s Columbia Banking Systems COLB Stock Holding History

Arrowstreet Capital’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	$4.97M	Buy	155,224 +79,372	+105%	+$2.36M	﹤0.01%	1287
2026 Q1	$2.08M	Buy	+75,852	New	+$2.19M	﹤0.01%	1394
2025 Q4	–	Sell	-442,579	Closed	-$11.4M	–	1855
2025 Q3	$11.4M	Buy	442,579 +153,807	+53%	+$3.91M	0.01%	918
2025 Q2	$6.75M	Buy	+288,772	New	+$6.69M	﹤0.01%	1043
2024 Q4	–	Sell	-450,835	Closed	-$11.8M	–	1769
2024 Q3	$11.8M	Buy	450,835 +207,566	+85%	+$4.94M	0.01%	697
2024 Q2	$4.84M	Buy	+243,269	New	+$4.62M	﹤0.01%	850
2023 Q3	–	Sell	-792,292	Closed	-$16.1M	–	1279
2023 Q2	$16.1M	Sell	792,292 -3,445,566	-81%	-$72.8M	0.02%	427
2023 Q1	$90.8M	Buy	+4,237,858	New	+$118M	0.12%	178
2021 Q1	–	Sell	-17,080	Closed	-$613K	–	2278
2020 Q4	$613K	Sell	17,080 -12,320	-42%	-$382K	﹤0.01%	1962
2020 Q3	$701K	Buy	+29,400	New	+$812K	﹤0.01%	1918
2019 Q4	–	Sell	-16,400	Closed	-$605K	–	1769
2019 Q3	$605K	Buy	+16,400	New	+$585K	﹤0.01%	1279
2015 Q4	–	Sell	-7,676	Closed	-$240K	–	1434
2015 Q3	$240K	Buy	7,676 +1,076	+16%	+$34K	﹤0.01%	1242
2015 Q2	$215K	Buy	+6,600	New	+$201K	﹤0.01%	1101
2015 Q1	–	Sell	-10,583	Closed	-$292K	–	1025
2014 Q4	$292K	Buy	+10,583	New	+$285K	﹤0.01%	1137
2013 Q3	–	Sell	-31,178	Closed	-$742K	–	1036
2013 Q2	$742K	Buy	+31,178	New	+$675K	0.01%	581

Other funds holding COLB

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Arrowstreet Capital's COLB Position: Q2 2026 in Review

Arrowstreet Capital increased its Columbia Banking Systems (COLB) stake by 105% in Q2 2026, buying an estimated $2.36M and bringing the position to 155,224 shares worth $4.97M. The position accounts for ﹤0.01% of the portfolio, ranked #1287.

Arrowstreet Capital first reported a position in COLB in Q2 2013 and has held it in 15 quarters since. The position peaked at $90.8M in Q1 2023. 555 funds tracked by Wall St. Rank hold COLB as of Q2 2026.

Arrowstreet Capital held 155,224 shares of Columbia Banking Systems worth $4.97M as of Q2 2026.
Arrowstreet Capital bought 79,372 Columbia Banking Systems shares in Q2 2026, an estimated $2.36M.
Columbia Banking Systems made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1287 holding.
Arrowstreet Capital first reported a position in Columbia Banking Systems in Q2 2013 and has held it in 15 quarters since.
Arrowstreet Capital's Columbia Banking Systems position peaked at $90.8M in Q1 2023.
555 funds tracked by Wall St. Rank held Columbia Banking Systems as of Q2 2026.

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