Aquatic Capital Management’s Old Second Bancorp OSBC Stock Holding History

Aquatic Capital 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	$879K	Buy	+37,700	New	+$806K	0.03%	596
2026 Q1	–	Sell	-1,775	Closed	-$34.6K	–	1698
2025 Q4	$34.6K	Sell	1,775 -2,361	-57%	-$44.1K	﹤0.01%	1281
2025 Q3	$71.5K	Sell	4,136 -13,120	-76%	-$236K	﹤0.01%	1253
2025 Q2	$306K	Buy	17,256 +11,788	+216%	+$192K	0.01%	936
2025 Q1	$91K	Sell	5,468 -2,488	-31%	-$44.5K	﹤0.01%	1074
2024 Q4	$141K	Buy	7,956 +2,556	+47%	+$44.4K	﹤0.01%	1005
2024 Q3	$84.2K	Buy	+5,400	New	+$86.9K	﹤0.01%	946
2024 Q1	–	Sell	-6,600	Closed	-$102K	–	1528
2023 Q4	$102K	Buy	6,600 +6,300	+2,100%	+$91.1K	﹤0.01%	1002
2023 Q3	$4K	Sell	300 -700	-70%	-$10.2K	﹤0.01%	1180
2023 Q2	$13K	Buy	+1,000	New	+$12.7K	﹤0.01%	1174
2022 Q3	–	Sell	-6,600	Closed	-$88K	–	1457
2022 Q2	$88K	Buy	+6,600	New	+$94.3K	0.03%	515
2022 Q1	–	Sell	-1,100	Closed	-$14K	–	1396
2021 Q4	$14K	Buy	+1,100	New	+$14.4K	0.03%	702

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 $3.38T AUM 44.17% 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

Aquatic Capital Management's OSBC Position: Q2 2026 in Review

Aquatic Capital Management opened a new position in Old Second Bancorp (OSBC) in Q2 2026: 37,700 shares worth $879K. The stake represents 0.03% of the portfolio and ranks #596 among its holdings. This is a return to the name: Aquatic Capital Management previously reported a position in OSBC as recently as Q4 2025.

Aquatic Capital Management first reported a position in OSBC in Q4 2021 and has held it in 12 quarters since. 184 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

Aquatic Capital Management held 37,700 shares of Old Second Bancorp worth $879K as of Q2 2026.
Old Second Bancorp was a new Aquatic Capital Management position in Q2 2026.
Old Second Bancorp made up 0.03% of Aquatic Capital Management's portfolio in Q2 2026, its #596 holding.
Aquatic Capital Management first reported a position in Old Second Bancorp in Q4 2021 and has held it in 12 quarters since.
184 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Aquatic Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.