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Atom Investors’s Old Second Bancorp OSBC Stock Holding History

Atom Investors’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 		– Sell
-26,934
Closed -$543K – 963
2026
Q1 		$543K Buy
+26,934
New +$540K 0.04% 461
2024
Q3 		– Sell
-69,618
Closed -$1.03M – 573
2024
Q2 		$1.03M Sell
69,618
-23,014
-25% -$324K 0.1% 245
2024
Q1 		$1.28M Buy
92,632
+68,126
+278% +$952K 0.16% 192
2023
Q4 		$378K Buy
24,506
+8,895
+57% +$129K 0.07% 320
2023
Q3 		$212K Buy
+15,611
New +$228K 0.05% 368

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

Atom Investors's OSBC Position: Q2 2026 in Review

Atom Investors sold out of Old Second Bancorp (OSBC) in Q2 2026, closing a stake of 26,934 shares — an estimated $543K sold.

Atom Investors first reported a position in OSBC in Q3 2023 and held it in 5 quarters. The position peaked at $1.28M in Q1 2024. 184 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

  • Atom Investors reported no remaining Old Second Bancorp position as of Q2 2026 after selling out during the quarter.
  • Atom Investors sold 26,934 Old Second Bancorp shares in Q2 2026, an estimated $543K.
  • Atom Investors first reported a position in Old Second Bancorp in Q3 2023 and held it in 5 quarters.
  • Atom Investors's Old Second Bancorp position peaked at $1.28M in Q1 2024.
  • 184 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.