TRCT
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Tower Research Capital (TRC)’s Old Second Bancorp OSBC Stock Holding History

Tower Research Capital (TRC)’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 		$50.2K Buy
2,491
+1,113
+81% +$22.3K ﹤0.01% 2738
2025
Q4 		$26.9K Buy
1,378
+42
+3% +$785 ﹤0.01% 2880
2025
Q3 		$23.1K Sell
1,336
-4,970
-79% -$89.5K ﹤0.01% 3178
2025
Q2 		$112K Buy
6,306
+5,153
+447% +$84K ﹤0.01% 2287
2025
Q1 		$19.2K Sell
1,153
-16,736
-94% -$300K ﹤0.01% 3011
2024
Q4 		$318K Buy
17,889
+11,559
+183% +$201K 0.01% 1362
2024
Q3 		$98.7K Sell
6,330
-8,420
-57% -$135K ﹤0.01% 2241
2024
Q2 		$218K Buy
14,750
+14,194
+2,553% +$200K ﹤0.01% 2000
2024
Q1 		$7.7K Sell
556
-11,117
-95% -$155K ﹤0.01% 4161
2023
Q4 		$180K Buy
11,673
+1,236
+12% +$17.9K ﹤0.01% 2188
2023
Q3 		$142K Buy
10,437
+9,677
+1,273% +$141K ﹤0.01% 1704
2023
Q2 		$9.93K Sell
760
-482
-39% -$6.13K ﹤0.01% 4197
2023
Q1 		$17K Sell
1,242
-2,028
-62% -$32.3K ﹤0.01% 3642
2022
Q4 		$53K Sell
3,270
-4,763
-59% -$76.1K ﹤0.01% 2305
2022
Q3 		$105K Buy
8,033
+5,925
+281% +$83.2K ﹤0.01% 2530
2022
Q2 		$28K Sell
2,108
-8,808
-81% -$126K ﹤0.01% 3451
2022
Q1 		$158K Buy
10,916
+9,970
+1,054% +$140K ﹤0.01% 1906
2021
Q4 		$12K Sell
946
-961
-50% -$12.6K ﹤0.01% 4309
2021
Q3 		$25K Buy
1,907
+157
+9% +$1.89K ﹤0.01% 3528
2021
Q2 		$22K Sell
1,750
-129
-7% -$1.73K ﹤0.01% 3811
2021
Q1 		$25K Sell
1,879
-3,963
-68% -$46.7K ﹤0.01% 3713
2020
Q4 		$59K Sell
5,842
-26,969
-82% -$256K ﹤0.01% 2932
2020
Q3 		$246K Buy
32,811
+26,431
+414% +$211K ﹤0.01% 2377
2020
Q2 		$50K Buy
+6,380
New +$47.2K ﹤0.01% 3048
2019
Q4 		– Sell
-1,289
Closed -$16K – 4145
2019
Q3 		$16K Buy
1,289
+885
+219% +$11K ﹤0.01% 2624
2019
Q2 		$5K Buy
+404
New +$5.19K ﹤0.01% 2951
2019
Q1 		– Sell
-715
Closed -$9K – 4153
2018
Q4 		$9K Sell
715
-55
-7% -$778 ﹤0.01% 2560
2018
Q3 		$12K Sell
770
-211
-22% -$3.21K ﹤0.01% 2656
2018
Q2 		$14K Buy
+981
New +$14.3K ﹤0.01% 2625
2018
Q1 		– Sell
-323
Closed -$4K – 3682
2017
Q4 		$4K Sell
323
-665
-67% -$8.83K ﹤0.01% 3002
2017
Q3 		$13K Sell
988
-1,131
-53% -$13.3K ﹤0.01% 2960
2017
Q2 		$24K Buy
+2,119
New +$24.6K ﹤0.01% 1126
2016
Q4 		– Sell
-529
Closed -$4K – 4240
2016
Q3 		$4K Sell
529
-2,054
-80% -$15.7K ﹤0.01% 2696
2016
Q2 		$18K Buy
+2,583
New +$18.3K ﹤0.01% 2332
2016
Q1 		– Sell
-2,459
Closed -$19K – 4702
2015
Q4 		$19K Buy
+2,459
New +$17.7K ﹤0.01% 1354
2015
Q3 		– Sell
-289
Closed -$2K – 4562
2015
Q2 		$2K Buy
289
+189
+189% +$1.15K ﹤0.01% 3768
2015
Q1 		$1K Buy
+100
New +$545 ﹤0.01% 4098
2014
Q2 		– Sell
-55
Closed – – 4476
2014
Q1 		$0 Sell
55
-2,113
-97% -$10K ﹤0.01% 4790
2013
Q4 		$10K Buy
2,168
+1,768
+442% +$8.58K ﹤0.01% 2992
2013
Q3 		$2K Buy
+400
New +$2.38K ﹤0.01% 4133

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

Tower Research Capital (TRC)'s OSBC Position: Q1 2026 in Review

Tower Research Capital (TRC) increased its Old Second Bancorp (OSBC) stake by 81% in Q1 2026, buying an estimated $22.3K and bringing the position to 2,491 shares worth $50.2K. The position accounts for ﹤0.01% of the portfolio, ranked #2738.

Tower Research Capital (TRC) first reported a position in OSBC in Q3 2013 and has held it in 40 quarters since. The position peaked at $318K in Q4 2024. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

  • Tower Research Capital (TRC) held 2,491 shares of Old Second Bancorp worth $50.2K as of Q1 2026.
  • Tower Research Capital (TRC) bought 1,113 Old Second Bancorp shares in Q1 2026, an estimated $22.3K.
  • Old Second Bancorp made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #2738 holding.
  • Tower Research Capital (TRC) first reported a position in Old Second Bancorp in Q3 2013 and has held it in 40 quarters since.
  • Tower Research Capital (TRC)'s Old Second Bancorp position peaked at $318K in Q4 2024.
  • 188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.