Martingale Asset Management
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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
Q3 		$1.36M Sell
55,653
-5,571
-9% -$138K 0.03% 476
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
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
American Century Companies
American Century Companies Kansas City, Missouri $229B AUM 33.35% 1-Year Est. Return
DAM
Davis Asset Management Sausalito, California $4B AUM 6.05% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $111B AUM 30.48% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Kennedy Capital Management
Kennedy Capital Management St Louis, Missouri $5.31B AUM 40.5% 1-Year Est. Return
Banc Funds Company
Banc Funds Company Chicago, Illinois $630M AUM 18.94% 1-Year Est. Return

Martingale Asset Management's OSBC Position: Q3 2026 in Review

Martingale Asset Management reduced its Old Second Bancorp (OSBC) stake by 9.1% in Q3 2026, selling an estimated $138K and leaving 55,653 shares worth $1.36M. The position accounts for 0.03% of the portfolio, ranked #476.

Martingale Asset Management first reported a position in OSBC in Q4 2015 and has held it in 27 quarters since. The position peaked at $3.04M in Q3 2018. 154 funds tracked by Wall St. Rank hold OSBC as of Q3 2026.

  • Martingale Asset Management held 55,653 shares of Old Second Bancorp worth $1.36M as of Q3 2026.
  • Martingale Asset Management sold 5,571 Old Second Bancorp shares in Q3 2026, an estimated $138K.
  • Old Second Bancorp made up 0.03% of Martingale Asset Management's portfolio in Q3 2026, its #476 holding.
  • Martingale Asset Management first reported a position in Old Second Bancorp in Q4 2015 and has held it in 27 quarters since.
  • Martingale Asset Management's Old Second Bancorp position peaked at $3.04M in Q3 2018.
  • 154 funds tracked by Wall St. Rank held Old Second Bancorp as of Q3 2026.

Based on Martingale Asset Management's 13F filing for Q3 2026, filed 12 Nov 2026.