Dimensional Fund Advisors Trims Stake in Lam Research

The investment firm reduced its position in the semiconductor company by 0.9% in the third quarter.

Published on Mar. 4, 2026

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Dimensional Fund Advisors LP trimmed its position in shares of Lam Research Corporation (NASDAQ:LRCX) by 0.9% during the third quarter, according to its most recent filing with the Securities and Exchange Commission (SEC). The fund owned 6,310,907 shares of the semiconductor company's stock after selling 57,236 shares during the quarter.

Why it matters

Lam Research is a major player in the semiconductor equipment industry, providing critical technology and services to logic and memory manufacturers. Changes in institutional ownership of the company's stock can signal shifts in market sentiment and investor confidence.

The details

Dimensional Fund Advisors, a prominent investment management firm, reduced its stake in Lam Research by a small margin of 0.9% in the third quarter. The firm still maintains a sizable position, owning approximately 0.5% of Lam Research's outstanding shares valued at $844.8 million as of the latest SEC filing.

  • Dimensional Fund Advisors trimmed its Lam Research position during the third quarter of 2026.

The players

Dimensional Fund Advisors LP

A global investment management firm that provides a range of equity, fixed income, and alternative investment strategies.

Lam Research Corporation

A leading global supplier of wafer fabrication equipment and services to the semiconductor industry.

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The takeaway

While the 0.9% reduction in Dimensional Fund Advisors' Lam Research stake is relatively small, it could signal a shift in the firm's outlook on the semiconductor industry or the company's prospects. Investors will likely continue to monitor institutional ownership changes and other market signals to gauge sentiment around Lam Research and the broader semiconductor sector.