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CenterBook Partners’s Old Second Bancorp OSBC Stock Holding History

CenterBook Partners’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
-13,425
Closed -$271K – 827
2026
Q1 		$271K Sell
13,425
-16,463
-55% -$330K 0.01% 579
2025
Q4 		$583K Sell
29,888
-15,909
-35% -$297K 0.03% 468
2025
Q3 		$792K Buy
+45,797
New +$825K 0.04% 417

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

CenterBook Partners's OSBC Position: Q2 2026 in Review

CenterBook Partners sold out of Old Second Bancorp (OSBC) in Q2 2026, closing a stake of 13,425 shares — an estimated $271K sold.

CenterBook Partners first reported a position in OSBC in Q3 2025 and held it in 3 quarters. The position peaked at $792K in Q3 2025. 184 funds tracked by Wall St. Rank hold OSBC as of Q2 2026.

  • CenterBook Partners reported no remaining Old Second Bancorp position as of Q2 2026 after selling out during the quarter.
  • CenterBook Partners sold 13,425 Old Second Bancorp shares in Q2 2026, an estimated $271K.
  • CenterBook Partners first reported a position in Old Second Bancorp in Q3 2025 and held it in 3 quarters.
  • CenterBook Partners's Old Second Bancorp position peaked at $792K in Q3 2025.
  • 184 funds tracked by Wall St. Rank held Old Second Bancorp as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.