Great Lakes Advisors’s Old Second Bancorp OSBC Stock Holding History

Great Lakes Advisors’s Portfolio OSBC Stock Details OSBC Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$3.99M	Buy	198,004 +30,619	+18%	+$614K	0.03%	277
2025 Q4	$3.26M	Hold	167,385	–	–	0.03%	324
2025 Q3	$2.89M	Sell	167,385 -25,077	-13%	-$452K	0.02%	366
2025 Q2	$3.41M	Sell	192,462 -5,530	-3%	-$90.2K	0.03%	365
2025 Q1	$3.29M	Buy	197,992 +84,399	+74%	+$1.51M	0.03%	356
2024 Q4	$2.02M	Hold	113,593	–	–	0.02%	477
2024 Q3	$1.77M	Sell	113,593 -82,471	-42%	-$1.33M	0.01%	499
2024 Q2	$2.9M	Buy	196,064 +12,280	+7%	+$173K	0.03%	420
2024 Q1	$2.54M	Sell	183,784 -411	-0.2%	-$5.74K	0.02%	450
2023 Q4	$2.84M	Buy	184,195 +11,853	+7%	+$171K	0.03%	414
2023 Q3	$2.35M	Buy	172,342 +103,002	+149%	+$1.5M	0.02%	440
2023 Q2	$906K	Sell	69,340 -31,995	-32%	-$407K	0.01%	533
2023 Q1	$1.42M	Buy	+101,335	New	+$1.62M	0.01%	530

Other funds holding OSBC

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

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

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

DAM

Davis Asset Management Sausalito, California $3.46B AUM 9.77% 1-Year Est. Return

Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return

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

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

FCM

FJ Capital Management Mclean, Virginia $888M AUM 18.97% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Great Lakes Advisors's OSBC Position: Q1 2026 in Review

Great Lakes Advisors increased its Old Second Bancorp (OSBC) stake by 18% in Q1 2026, buying an estimated $614K and bringing the position to 198,004 shares worth $3.99M. The position accounts for 0.03% of the portfolio, ranked #277.

Great Lakes Advisors first reported a position in OSBC in Q1 2023 and has held it in 13 quarters since. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

Great Lakes Advisors held 198,004 shares of Old Second Bancorp worth $3.99M as of Q1 2026.
Great Lakes Advisors bought 30,619 Old Second Bancorp shares in Q1 2026, an estimated $614K.
Old Second Bancorp made up 0.03% of Great Lakes Advisors's portfolio in Q1 2026, its #277 holding.
Great Lakes Advisors first reported a position in Old Second Bancorp in Q1 2023 and has held it in 13 quarters since.
188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on Great Lakes Advisors's 13F filing for Q1 2026, filed 12 May 2026.