Dimensional Fund Advisors Boosts Stake in Automatic Data Processing

Institutional investor increases position in payroll and HR services provider

Published on Mar. 4, 2026

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Dimensional Fund Advisors LP, a major institutional investor, increased its stake in Automatic Data Processing, Inc. (NASDAQ:ADP) by 0.8% during the third quarter of 2026. The fund now owns approximately 2.4 million shares, or 0.60% of the business services provider's outstanding stock, valued at over $706 million.

Why it matters

Automatic Data Processing is a leading provider of payroll, HR, and other business services to companies of all sizes. Institutional investors closely monitor and trade the stock, as changes in major shareholders can impact the company's valuation and operations.

The details

According to a recent SEC filing, Dimensional Fund Advisors purchased an additional 19,536 shares of Automatic Data Processing during the third quarter. The firm now owns a total of 2,408,883 shares, making it one of the company's largest institutional shareholders.

  • Dimensional Fund Advisors increased its ADP stake 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 to institutional and individual investors worldwide.

Automatic Data Processing, Inc.

A leading provider of cloud-based human capital management, payroll, and business process outsourcing solutions for employers of all sizes.

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The takeaway

The increased stake by Dimensional Fund Advisors, a respected institutional investor, signals confidence in Automatic Data Processing's long-term growth prospects and ability to navigate industry challenges. This development may attract further attention and investment in the stock from other major funds.