SCHEDULE: Dimensional Fund Advisors Reports 5.1% Stake in ACCO Brands

Dimensional Fund Advisors LP has reported a 5.1% beneficial ownership stake in ACCO Brands Corp common stock as of September 30, 2025.

Summary

• Dimensional Fund Advisors LP, an investment adviser, has filed an Amendment No. 9 to Schedule 13G regarding its beneficial ownership in ACCO Brands Corp.
• As of September 30, 2025, Dimensional Fund Advisors LP beneficially owns 4,583,907 shares of ACCO Brands Corp common stock.
• This ownership represents 5.1% of the total class of ACCO Brands Corp common stock.
• Dimensional Fund Advisors LP holds sole voting power over 4,484,058 shares and sole dispositive power over 4,583,907 shares.
• The securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing the control of ACCO Brands Corp.

Sentiment

Score: 6

Explanation: The sentiment is neutral to slightly positive. While a routine disclosure, the presence of a significant institutional investor like Dimensional Fund Advisors LP can be viewed as a positive signal of confidence in the company, even if the investment is passive.

Positives

• The disclosure of a 5.1% stake by a prominent investment adviser like Dimensional Fund Advisors LP indicates institutional interest in ACCO Brands Corp.

Risks

• Dimensional Fund Advisors LP disclaims beneficial ownership of the reported securities, stating they are owned by the various Funds it advises. This means the direct economic interest lies with the Funds, not Dimensional itself.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding ACCO Brands Corp's future performance or operations.

Management Comments

• Selwyn Notelovitz, Global Chief Compliance Officer of Dimensional Fund Advisors LP, certified that the securities were acquired and are held in the ordinary course of business and not for the purpose of or with the effect of changing or influencing the control of ACCO Brands Corp.

Industry Context

This filing is a routine disclosure of institutional ownership, common for publicly traded companies, reflecting a passive investment by a large asset manager. It does not provide specific insights into broader industry trends or competitive positioning.

Stakeholder Impact

• Shareholders: The disclosure indicates continued institutional interest in ACCO Brands Corp's stock.

Key Dates

Keywords

ACCO Brands, Dimensional Fund Advisors, Common Stock, Institutional Ownership, SEC Filing, Schedule 13G, Investment Adviser