Banc Funds Co. LLC Reduces Stake in Old Second Bancorp

Old Second Bancorp remains Banc Funds Co. LLC's second-largest position despite 13% reduction in shares

Mar. 15, 2026 at 8:22am

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Banc Funds Co. LLC has reduced its stake in Old Second Bancorp, Inc. (NASDAQ:OSBC) by 13% during the third quarter, according to the company's recent 13F filing with the SEC. Despite the reduction, Old Second Bancorp remains Banc Funds Co. LLC's second-largest position, accounting for approximately 3% of the firm's investment portfolio.

Why it matters

The reduction in Banc Funds Co. LLC's stake in Old Second Bancorp is noteworthy as it provides insight into the investment firm's portfolio management strategy. The fact that Old Second Bancorp remains the firm's second-largest position suggests that Banc Funds Co. LLC still sees significant value in the financial services provider.

The details

According to the 13F filing, Banc Funds Co. LLC sold 151,000 shares of Old Second Bancorp during the third quarter, reducing its total position to 1,006,378 shares. The firm now owns approximately 1.91% of Old Second Bancorp's outstanding shares, which were valued at $17.4 million as of the most recent filing.

  • Banc Funds Co. LLC reduced its stake in Old Second Bancorp during the third quarter of 2026.

The players

Banc Funds Co. LLC

An investment management firm that focuses on the financial services sector.

Old Second Bancorp, Inc.

A bank holding company based in Aurora, Illinois that provides commercial and retail banking services through its subsidiary, Old Second National Bank.

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The takeaway

The reduction in Banc Funds Co. LLC's stake in Old Second Bancorp suggests that the investment firm is actively managing its portfolio, but still sees value in the financial services provider. The fact that Old Second Bancorp remains Banc Funds Co. LLC's second-largest position indicates that the firm believes the company has strong growth potential.