William Blair Investment Management Sells Guidewire Software Shares

Firm reduces stake in technology company by 15.2% in third quarter

Published on Mar. 2, 2026

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William Blair Investment Management LLC decreased its stake in Guidewire Software, Inc. (NYSE:GWRE) by 15.2% during the third quarter, according to a recent SEC filing. The firm owned 405,950 shares of the technology company's stock after selling 72,498 shares during the period.

Why it matters

Guidewire Software is a major player in the insurance technology space, providing core software solutions for policy administration, billing, and claims management. The reduction in William Blair's stake could signal a shift in investor sentiment around the company's prospects.

The details

According to the filing, William Blair Investment Management LLC sold 72,498 shares of Guidewire Software during the third quarter. The firm now owns 405,950 shares, or about 0.48% of the technology company's outstanding stock. Guidewire Software's shares have seen volatility in recent months, dropping from a 52-week high of $272.60 to around $145 currently.

  • The share sale occurred during the third quarter of 2026.

The players

William Blair Investment Management LLC

An investment management firm that has reduced its stake in Guidewire Software.

Guidewire Software, Inc.

A technology company that provides core software solutions for the insurance industry.

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The takeaway

The reduction in William Blair's Guidewire Software holdings could signal broader uncertainty around the insurance technology company's near-term prospects, though the firm remains a major shareholder. Investors will be watching to see if other institutional investors follow suit or if Guidewire can regain momentum.