Westfield Capital Management Reduces Stake in Mueller Industries

The institutional investor sold over 23,000 shares of the industrial products company in the third quarter.

Feb. 27, 2026 at 1:27pm

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Westfield Capital Management Co. LP reduced its position in Mueller Industries, Inc. (NYSE:MLI) by 15.7% in the third quarter, according to a recent 13F filing with the Securities & Exchange Commission. The institutional investor now owns 127,835 shares of the industrial products company's stock, valued at $12.93 million.

Why it matters

This filing provides insight into the investment decisions of Westfield Capital Management, a major institutional investor. The reduction in their Mueller Industries stake could signal a shift in their outlook on the company or the broader industrial products sector.

The details

Westfield Capital Management sold 23,866 shares of Mueller Industries during the third quarter, reducing their total stake to 127,835 shares. The company cited the industrial products company's stock performance as the reason for the sell-off. Mueller Industries' shares have risen over 75% in the past year, outperforming the broader market.

  • Westfield Capital Management filed its 13F report for the third quarter of 2025 on February 27, 2026.

The players

Westfield Capital Management Co. LP

An institutional investment management firm that owns stakes in various publicly traded companies.

Mueller Industries, Inc.

A diversified manufacturer and marketer of copper, brass, aluminum, and plastic products serving a range of industries.

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The takeaway

This filing highlights the ongoing shifts in institutional investment strategies as major firms like Westfield Capital Management adjust their portfolios in response to changing market conditions and stock performance. The reduction in their Mueller Industries stake could signal broader trends in the industrial products sector that investors should monitor.