State of Wisconsin Investment Board’s Old Second Bancorp OSBC Stock Holding History

State of Wisconsin Investment Board’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	$361K	Buy	17,885 +1,744	+11%	+$35K	﹤0.01%	2149
2025 Q4	$315K	Buy	+16,141	New	+$302K	﹤0.01%	2149
2022 Q2	–	Sell	-177,747	Closed	-$2.58M	–	2859
2022 Q1	$2.58M	Hold	177,747	–	–	0.01%	1421
2021 Q4	$2.24M	Hold	177,747	–	–	﹤0.01%	1253
2021 Q3	$2.32M	Hold	177,747	–	–	﹤0.01%	1251
2021 Q2	$2.2M	Hold	177,747	–	–	﹤0.01%	1261
2021 Q1	$2.35M	Buy	177,747 +5,500	+3%	+$64.8K	0.01%	1204
2020 Q4	$1.74M	Sell	172,247 -23,100	-12%	-$219K	﹤0.01%	1228
2020 Q3	$1.46M	Sell	195,347 -7,100	-4%	-$56.8K	﹤0.01%	1217
2020 Q2	$1.57M	Buy	202,447 +30,647	+18%	+$227K	﹤0.01%	1167
2020 Q1	$1.19M	Buy	171,800 +3,000	+2%	+$33K	﹤0.01%	1167
2019 Q4	$2.27M	Buy	168,800 +12,900	+8%	+$161K	0.01%	1117
2019 Q3	$1.91M	Hold	155,900	–	–	0.01%	1027
2019 Q2	$1.99M	Buy	155,900 +13,200	+9%	+$170K	0.01%	1022
2019 Q1	$1.8M	Buy	142,700 +32,700	+30%	+$453K	0.01%	1029
2018 Q4	$1.43M	Hold	110,000	–	–	﹤0.01%	1034
2018 Q3	$1.7M	Hold	110,000	–	–	﹤0.01%	1070
2018 Q2	$1.58M	Hold	110,000	–	–	﹤0.01%	1030
2018 Q1	$1.53M	Buy	+110,000	New	+$1.56M	﹤0.01%	1016

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

State of Wisconsin Investment Board's OSBC Position: Q1 2026 in Review

State of Wisconsin Investment Board increased its Old Second Bancorp (OSBC) stake by 11% in Q1 2026, buying an estimated $35K and bringing the position to 17,885 shares worth $361K. The position accounts for ﹤0.01% of the portfolio, ranked #2149.

State of Wisconsin Investment Board first reported a position in OSBC in Q1 2018 and has held it in 19 quarters since. The position peaked at $2.58M in Q1 2022. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

State of Wisconsin Investment Board held 17,885 shares of Old Second Bancorp worth $361K as of Q1 2026.
State of Wisconsin Investment Board bought 1,744 Old Second Bancorp shares in Q1 2026, an estimated $35K.
Old Second Bancorp made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #2149 holding.
State of Wisconsin Investment Board first reported a position in Old Second Bancorp in Q1 2018 and has held it in 19 quarters since.
State of Wisconsin Investment Board's Old Second Bancorp position peaked at $2.58M in Q1 2022.
188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.