Vanguard Portfolio Management
OSBC icon

Vanguard Portfolio Management’s Old Second Bancorp OSBC Stock Holding History

Vanguard Portfolio 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
Q2 		$19.1M Buy
819,368
+106,935
+15% +$2.29M ﹤0.01% 2013
2026
Q1 		$14.4M Buy
+712,433
New +$14.3M ﹤0.01% 2008

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

Vanguard Portfolio Management's OSBC Position: Q2 2026 in Review

Vanguard Portfolio Management increased its Old Second Bancorp (OSBC) stake by 15% in Q2 2026, buying an estimated $2.29M and bringing the position to 819,368 shares worth $19.1M. The position accounts for ﹤0.01% of the portfolio, ranked #2013.

Vanguard Portfolio Management first reported a position in OSBC in Q1 2026 and has held it in 2 quarters since. 183 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

  • Vanguard Portfolio Management held 819,368 shares of Old Second Bancorp worth $19.1M as of Q2 2026.
  • Vanguard Portfolio Management bought 106,935 Old Second Bancorp shares in Q2 2026, an estimated $2.29M.
  • Old Second Bancorp made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #2013 holding.
  • Vanguard Portfolio Management first reported a position in Old Second Bancorp in Q1 2026 and has held it in 2 quarters since.
  • 183 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.