Wellington Management Group
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Wellington Management Group’s Old Second Bancorp OSBC Stock Holding History

Wellington Management Group’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 		$17.3M Sell
857,785
-111,923
-12% -$2.25M ﹤0.01% 1072
2025
Q4 		$18.9M Buy
969,708
+813,600
+521% +$15.2M ﹤0.01% 1056
2025
Q3 		$2.7M Hold
156,108
– – ﹤0.01% 1568
2025
Q2 		$2.77M Sell
156,108
-26,729
-15% -$436K ﹤0.01% 1506
2025
Q1 		$3.04M Sell
182,837
-153,800
-46% -$2.75M ﹤0.01% 1469
2024
Q4 		$5.99M Buy
336,637
+14,100
+4% +$245K ﹤0.01% 1308
2024
Q3 		$5.03M Sell
322,537
-71,663
-18% -$1.15M ﹤0.01% 1328
2024
Q2 		$5.84M Buy
394,200
+6,400
+2% +$90K ﹤0.01% 1284
2024
Q1 		$5.37M Hold
387,800
– – ﹤0.01% 1309
2023
Q4 		$5.99M Buy
387,800
+130,200
+51% +$1.88M ﹤0.01% 1257
2023
Q3 		$3.51M Buy
257,600
+36,900
+17% +$539K ﹤0.01% 1371
2023
Q2 		$2.88M Buy
+220,700
New +$2.81M ﹤0.01% 1400
2021
Q4 		– Sell
-258,300
Closed -$3.37M – 2268
2021
Q3 		$3.37M Sell
258,300
-349,100
-57% -$4.19M ﹤0.01% 1607
2021
Q2 		$7.53M Sell
607,400
-245,620
-29% -$3.29M ﹤0.01% 1370
2021
Q1 		$11.3M Sell
853,020
-134,939
-14% -$1.59M ﹤0.01% 1207
2020
Q4 		$9.98M Sell
987,959
-255,859
-21% -$2.43M ﹤0.01% 1189
2020
Q3 		$9.32M Sell
1,243,818
-29,068
-2% -$233K ﹤0.01% 1125
2020
Q2 		$9.9M Buy
1,272,886
+307,638
+32% +$2.28M ﹤0.01% 1071
2020
Q1 		$6.67M Buy
965,248
+219,040
+29% +$2.41M ﹤0.01% 1140
2019
Q4 		$10.1M Sell
746,208
-87,620
-11% -$1.09M ﹤0.01% 1161
2019
Q3 		$10.2M Buy
833,828
+338,395
+68% +$4.19M ﹤0.01% 1162
2019
Q2 		$6.33M Buy
495,433
+76,144
+18% +$979K ﹤0.01% 1323
2019
Q1 		$5.28M Sell
419,289
-116,943
-22% -$1.62M ﹤0.01% 1368
2018
Q4 		$6.97M Sell
536,232
-259,201
-33% -$3.67M ﹤0.01% 1288
2018
Q3 		$12.3M Sell
795,433
-532,987
-40% -$8.12M ﹤0.01% 1220
2018
Q2 		$19.1M Sell
1,328,420
-192,107
-13% -$2.81M ﹤0.01% 1102
2018
Q1 		$21.1M Sell
1,520,527
-12,533
-0.8% -$178K ﹤0.01% 1057
2017
Q4 		$20.9M Sell
1,533,060
-386,628
-20% -$5.13M ﹤0.01% 1056
2017
Q3 		$25.8M Buy
1,919,688
+63,092
+3% +$741K 0.01% 966
2017
Q2 		$21.4M Sell
1,856,596
-310,789
-14% -$3.61M 0.01% 1003
2017
Q1 		$24.4M Buy
2,167,385
+600,525
+38% +$6.47M 0.01% 968
2016
Q4 		$17.3M Sell
1,566,860
-111,243
-7% -$1.01M ﹤0.01% 1051
2016
Q3 		$13.9M Buy
1,678,103
+486,888
+41% +$3.73M ﹤0.01% 1078
2016
Q2 		$8.14M Sell
1,191,215
-138,031
-10% -$979K ﹤0.01% 1202
2016
Q1 		$9.53M Hold
1,329,246
– – ﹤0.01% 1157
2015
Q4 		$10.4M Hold
1,329,246
– – ﹤0.01% 1152
2015
Q3 		$8.28M Sell
1,329,246
-21,711
-2% -$137K ﹤0.01% 1228
2015
Q2 		$8.92M Sell
1,350,957
-141,545
-9% -$858K ﹤0.01% 1250
2015
Q1 		$8.54M Buy
1,492,502
+16,390
+1% +$89.4K ﹤0.01% 1293
2014
Q4 		$7.93M Sell
1,476,112
-354,358
-19% -$1.72M ﹤0.01% 1314
2014
Q3 		$8.8M Sell
1,830,470
-438,700
-19% -$2.11M ﹤0.01% 1283
2014
Q2 		$11.3M Buy
+2,269,170
New +$10.9M ﹤0.01% 1223

Other funds holding OSBC

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
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
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
American Century Companies
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 Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Wellington Management Group's OSBC Position: Q1 2026 in Review

Wellington Management Group reduced its Old Second Bancorp (OSBC) stake by 12% in Q1 2026, selling an estimated $2.25M and leaving 857,785 shares worth $17.3M. The position accounts for ﹤0.01% of the portfolio, ranked #1072.

Wellington Management Group first reported a position in OSBC in Q2 2014 and has held it in 42 quarters since. The position peaked at $25.8M in Q3 2017. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

  • Wellington Management Group held 857,785 shares of Old Second Bancorp worth $17.3M as of Q1 2026.
  • Wellington Management Group sold 111,923 Old Second Bancorp shares in Q1 2026, an estimated $2.25M.
  • Old Second Bancorp made up ﹤0.01% of Wellington Management Group's portfolio in Q1 2026, its #1072 holding.
  • Wellington Management Group first reported a position in Old Second Bancorp in Q2 2014 and has held it in 42 quarters since.
  • Wellington Management Group's Old Second Bancorp position peaked at $25.8M in Q3 2017.
  • 188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.