Martingale Asset Management’s Old Second Bancorp OSBC Stock Holding History

Martingale Asset Management’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	$1.43M	Sell	61,224 -26,000	-30%	-$556K	0.03%	466
2026 Q1	$1.76M	Sell	87,224 -23,244	-21%	-$466K	0.04%	371
2025 Q4	$2.15M	Sell	110,468 -24,772	-18%	-$463K	0.05%	299
2025 Q3	$2.34M	Buy	135,240 +3,248	+2%	+$58.5K	0.06%	276
2025 Q2	$2.34M	Buy	131,992 +28,633	+28%	+$467K	0.06%	273
2025 Q1	$1.72M	Buy	+103,359	New	+$1.85M	0.04%	334
2021 Q3	–	Sell	-10,500	Closed	-$131K	–	912
2021 Q2	$131K	Hold	10,500	–	–	﹤0.01%	817
2021 Q1	$139K	Buy	+10,500	New	+$124K	﹤0.01%	829
2020 Q2	–	Sell	-11,145	Closed	-$78K	–	1056
2020 Q1	$78K	Sell	11,145 -36,255	-76%	-$399K	﹤0.01%	951
2019 Q4	$639K	Sell	47,400 -21,800	-32%	-$272K	0.01%	838
2019 Q3	$846K	Sell	69,200 -47,213	-41%	-$585K	0.01%	802
2019 Q2	$1.49M	Buy	116,413 +7,300	+7%	+$93.8K	0.02%	667
2019 Q1	$1.37M	Sell	109,113 -16,900	-13%	-$234K	0.01%	699
2018 Q4	$1.64M	Sell	126,013 -70,378	-36%	-$996K	0.02%	589
2018 Q3	$3.04M	Buy	196,391 +33,809	+21%	+$515K	0.04%	451
2018 Q2	$2.34M	Buy	162,582 +83,918	+107%	+$1.23M	0.03%	496
2018 Q1	$1.09M	Sell	78,664 -4,700	-6%	-$66.9K	0.01%	703
2017 Q4	$1.14M	Buy	83,364 +15,229	+22%	+$202K	0.02%	679
2017 Q3	$917K	Buy	68,135 +4,506	+7%	+$52.9K	0.01%	750
2017 Q2	$735K	Buy	63,629 +5,100	+9%	+$59.3K	0.01%	767
2017 Q1	$659K	Buy	58,529 +4,305	+8%	+$46.3K	0.01%	779
2016 Q4	$600K	Buy	54,224 +15,904	+42%	+$144K	0.01%	803
2016 Q3	$319K	Hold	38,320	–	–	﹤0.01%	879
2016 Q2	$262K	Sell	38,320 -3	-0%	-$21	﹤0.01%	770
2016 Q1	$275K	Buy	38,323 +23,866	+165%	+$165K	0.01%	754
2015 Q4	$115K	Buy	+14,457	New	+$104K	﹤0.01%	817

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

Martingale Asset Management's OSBC Position: Q2 2026 in Review

Martingale Asset Management reduced its Old Second Bancorp (OSBC) stake by 30% in Q2 2026, selling an estimated $556K and leaving 61,224 shares worth $1.43M. The position accounts for 0.03% of the portfolio, ranked #466.

Martingale Asset Management first reported a position in OSBC in Q4 2015 and has held it in 26 quarters since. The position peaked at $3.04M in Q3 2018. 185 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

Martingale Asset Management held 61,224 shares of Old Second Bancorp worth $1.43M as of Q2 2026.
Martingale Asset Management sold 26,000 Old Second Bancorp shares in Q2 2026, an estimated $556K.
Old Second Bancorp made up 0.03% of Martingale Asset Management's portfolio in Q2 2026, its #466 holding.
Martingale Asset Management first reported a position in Old Second Bancorp in Q4 2015 and has held it in 26 quarters since.
Martingale Asset Management's Old Second Bancorp position peaked at $3.04M in Q3 2018.
185 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Martingale Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.