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 Q2	$4.76M	Buy	203,909 +5,905	+3%	+$126K	0.04%	246
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 $6.73T AUM 46.02% 1-Year Est. Return

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

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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

DAM

Davis Asset Management Sausalito, California $3.95B AUM 11.79% 1-Year Est. Return

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

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

FCM

FJ Capital Management Mclean, Virginia $770M AUM 28.42% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Great Lakes Advisors's OSBC Position: Q2 2026 in Review

Great Lakes Advisors increased its Old Second Bancorp (OSBC) stake by 3% in Q2 2026, buying an estimated $126K and bringing the position to 203,909 shares worth $4.76M. The position accounts for 0.04% of the portfolio, ranked #246.

Great Lakes Advisors first reported a position in OSBC in Q1 2023 and has held it in 14 quarters since. 185 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

Great Lakes Advisors held 203,909 shares of Old Second Bancorp worth $4.76M as of Q2 2026.
Great Lakes Advisors bought 5,905 Old Second Bancorp shares in Q2 2026, an estimated $126K.
Old Second Bancorp made up 0.04% of Great Lakes Advisors's portfolio in Q2 2026, its #246 holding.
Great Lakes Advisors first reported a position in Old Second Bancorp in Q1 2023 and has held it in 14 quarters since.
185 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Great Lakes Advisors's 13F filing for Q2 2026, filed 10 Aug 2026.