Rhumbline Advisers has filed a Form 13F-HR with the Securities and Exchange Commission, disclosing its equity holdings as of the close of business on September 30, 2026. The filing lists the firm's principal executive office as located at 265 Franklin Street, 21st Floor, Boston, MA 02110, and identifies Lisa Ann Sheeler as the Chief Compliance Officer and General Counsel responsible for the report.

The filing details a portfolio of 4,108 equity securities held by the firm. The report includes a comprehensive list of individual stock positions, totaling 4,108 holdings. The document serves as a public record of the firm's equity portfolio composition as of the specified reporting date.