William Blair Investment Management Reduces Stake in Enterprise Financial Services

The investment firm decreased its holdings in the bank by 5.7% in the third quarter.

Published on Mar. 2, 2026

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According to a recent SEC filing, William Blair Investment Management LLC decreased its holdings in shares of Enterprise Financial Services Corporation (NASDAQ:EFSC) by 5.7% in the third quarter. The firm now owns 577,965 shares of the bank's stock, worth approximately $33.51 million, making up about 1.56% of Enterprise Financial Services' total shares outstanding.

Why it matters

This filing provides insight into the investment decisions of a major institutional investor, William Blair Investment Management, and how they are adjusting their position in Enterprise Financial Services, a regional bank based in Missouri. Tracking changes in institutional ownership can offer clues about the market's sentiment towards a company.

The details

According to the 13F filing, William Blair Investment Management sold 35,054 shares of Enterprise Financial Services during the third quarter. The firm now owns approximately 577,965 shares, or 1.56% of the company's total outstanding shares. Enterprise Financial Services is a regional bank headquartered in Clayton, Missouri that provides commercial banking, mortgage banking, and wealth management services.

  • The filing covers the third quarter of 2026.

The players

William Blair Investment Management LLC

An investment management firm that decreased its holdings in Enterprise Financial Services Corporation in the third quarter of 2026.

Enterprise Financial Services Corporation

A regional bank headquartered in Clayton, Missouri that provides commercial banking, mortgage banking, and wealth management services.

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The takeaway

This filing shows that a major institutional investor, William Blair Investment Management, has reduced its stake in Enterprise Financial Services, potentially signaling a shift in sentiment around the regional bank's prospects. Tracking changes in institutional ownership can provide valuable insights into how the market views a company's performance and future outlook.