Arrowstreet Capital
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Arrowstreet Capital’s Old Second Bancorp OSBC Stock Holding History

Arrowstreet Capital’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 		$4.91M Buy
210,745
+69,719
+49% +$1.49M ﹤0.01% 1290
2026
Q1 		$2.84M Sell
141,026
-75,485
-35% -$1.51M ﹤0.01% 1314
2025
Q4 		$4.22M Sell
216,511
-384
-0.2% -$7.17K ﹤0.01% 1186
2025
Q3 		$3.75M Buy
216,895
+3,659
+2% +$65.9K ﹤0.01% 1266
2025
Q2 		$3.78M Buy
213,236
+18,448
+9% +$301K ﹤0.01% 1264
2025
Q1 		$3.24M Buy
194,788
+25,854
+15% +$463K ﹤0.01% 1149
2024
Q4 		$3M Buy
168,934
+40,542
+32% +$705K ﹤0.01% 1167
2024
Q3 		$2M Buy
128,392
+87,479
+214% +$1.41M ﹤0.01% 1231
2024
Q2 		$606K Buy
+40,913
New +$575K ﹤0.01% 1307
2023
Q4 		– Sell
-53,168
Closed -$724K – 1517
2023
Q3 		$724K Buy
+53,168
New +$776K ﹤0.01% 1056
2023
Q2 		– Sell
-34,519
Closed -$485K – 1412
2023
Q1 		$485K Buy
+34,519
New +$551K ﹤0.01% 1185
2022
Q1 		– Sell
-124,037
Closed -$1.56M – 1456
2021
Q4 		$1.56M Buy
124,037
+19,662
+19% +$258K ﹤0.01% 1070
2021
Q3 		$1.36M Buy
104,375
+19,477
+23% +$234K ﹤0.01% 1223
2021
Q2 		$1.05M Buy
84,898
+69,015
+435% +$924K ﹤0.01% 1526
2021
Q1 		$210K Sell
15,883
-152,187
-91% -$1.79M ﹤0.01% 2136
2020
Q4 		$1.7M Hold
168,070
– – ﹤0.01% 1664
2020
Q3 		$1.26M Buy
168,070
+22,206
+15% +$178K ﹤0.01% 1749
2020
Q2 		$1.14M Sell
145,864
-9,000
-6% -$66.6K ﹤0.01% 1719
2020
Q1 		$1.07M Buy
154,864
+77,939
+101% +$857K ﹤0.01% 1296
2019
Q4 		$1.04M Buy
76,925
+55,725
+263% +$695K ﹤0.01% 1325
2019
Q3 		$259K Buy
+21,200
New +$263K ﹤0.01% 1427

Other funds holding OSBC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
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
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Goldman Sachs
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 Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Arrowstreet Capital's OSBC Position: Q2 2026 in Review

Arrowstreet Capital increased its Old Second Bancorp (OSBC) stake by 49% in Q2 2026, buying an estimated $1.49M and bringing the position to 210,745 shares worth $4.91M. The position accounts for ﹤0.01% of the portfolio, ranked #1290.

Arrowstreet Capital first reported a position in OSBC in Q3 2019 and has held it in 21 quarters since. 184 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

  • Arrowstreet Capital held 210,745 shares of Old Second Bancorp worth $4.91M as of Q2 2026.
  • Arrowstreet Capital bought 69,719 Old Second Bancorp shares in Q2 2026, an estimated $1.49M.
  • Old Second Bancorp made up ﹤0.01% of Arrowstreet Capital's portfolio in Q2 2026, its #1290 holding.
  • Arrowstreet Capital first reported a position in Old Second Bancorp in Q3 2019 and has held it in 21 quarters since.
  • 184 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Arrowstreet Capital's 13F filing for Q2 2026, filed 13 Aug 2026.