GI
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GAMCO Investors’s Old Second Bancorp OSBC Stock Holding History

GAMCO 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 		$660K Hold
32,721
– – 0.01% 709
2025
Q4 		$638K Hold
32,721
– – 0.01% 747
2025
Q3 		$566K Buy
+32,721
New +$589K 0.01% 783

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

GAMCO Investors's OSBC Position: Q1 2026 in Review

GAMCO Investors held its Old Second Bancorp (OSBC) position steady in Q1 2026 at 32,721 shares worth $660K. The position accounts for 0.01% of the portfolio, ranked #709.

GAMCO Investors first reported a position in OSBC in Q3 2025 and has held it in 3 quarters since. 188 funds tracked by Wall St. Rank hold OSBC as of Q1 2026.

  • GAMCO Investors held 32,721 shares of Old Second Bancorp worth $660K as of Q1 2026.
  • GAMCO Investors left its Old Second Bancorp share count unchanged in Q1 2026.
  • Old Second Bancorp made up 0.01% of GAMCO Investors's portfolio in Q1 2026, its #709 holding.
  • GAMCO Investors first reported a position in Old Second Bancorp in Q3 2025 and has held it in 3 quarters since.
  • 188 funds tracked by Wall St. Rank held Old Second Bancorp as of Q1 2026.

Based on GAMCO Investors's 13F filing for Q1 2026, filed 14 May 2026.