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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
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 $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

Atom Investors's OSBC Position: Q1 2026 in Review

Atom Investors opened a new position in Old Second Bancorp (OSBC) in Q1 2026: 26,934 shares worth $543K. The stake represents 0.04% of the portfolio and ranks #461 among its holdings. This is a return to the name: Atom Investors previously reported a position in OSBC as recently as Q2 2024.

Atom Investors first reported a position in OSBC in Q3 2023 and has held it in 5 quarters since. The position peaked at $1.28M in Q1 2024. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

  • Atom Investors held 26,934 shares of Old Second Bancorp worth $543K as of Q1 2026.
  • Old Second Bancorp was a new Atom Investors position in Q1 2026.
  • Old Second Bancorp made up 0.04% of Atom Investors's portfolio in Q1 2026, its #461 holding.
  • Atom Investors first reported a position in Old Second Bancorp in Q3 2023 and has held it in 5 quarters since.
  • Atom Investors's Old Second Bancorp position peaked at $1.28M in Q1 2024.
  • 188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on Atom Investors's 13F filing for Q1 2026, filed 15 May 2026.