Dimensional Fund Advisors Reduces Stake in Fastenal

Institutional investor cuts position in industrial supply company by 6.5% in Q3

Published on Mar. 6, 2026

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Dimensional Fund Advisors LP, a major institutional investor, reduced its stake in Fastenal Company (NASDAQ:FAST) by 6.5% during the third quarter of 2026. The firm now owns 6,878,061 shares of the industrial supply company, valued at $337.29 million, representing 0.60% ownership.

Why it matters

Dimensional Fund Advisors is a prominent institutional investor, and its trading activity in Fastenal shares provides insight into market sentiment around the industrial supply company. The reduction in stake could signal broader investor concerns or a shift in Dimensional's investment strategy.

The details

According to Dimensional Fund Advisors' latest 13F filing with the SEC, the firm sold 478,846 shares of Fastenal during the third quarter. This reduced its total position in the company to 6,878,061 shares, worth $337.29 million. Dimensional Fund Advisors remains a significant shareholder, owning 0.60% of Fastenal's outstanding stock.

  • Dimensional Fund Advisors filed its 13F report for the third quarter of 2026 on March 6, 2026.

The players

Dimensional Fund Advisors LP

A prominent institutional investment management firm that oversees over $600 billion in assets.

Fastenal Company

A wholesale distributor of industrial and construction supplies, best known for its wide range of fasteners and other industrial consumables.

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The takeaway

Dimensional Fund Advisors' reduced stake in Fastenal could signal broader investor concerns about the industrial supply company's performance or a shift in the firm's investment strategy. However, Dimensional remains a significant shareholder, indicating its continued belief in Fastenal's long-term potential.