Baker Library | Bloomberg Center

Thomson Reuters Ownership Databases

Description: Data on stock ownership by institutions, other major holders and insiders.

Formerly called Spectrum, Thomson Reuters Insider Filing Data (Forms 3, 4, 5, and 144) goes back to 1978; a cleansed version is available only back to 1986. Institutional (Form 13F) and 5 Percent Owner Databases go back to 1980; the Domestic Mutual Fund Database goes back to 1979.

In WRDS, click on Thomson Reuters, then on the appropriate filing type.

How do I find insider holding data from Thomson Reuters in WRDS?

How do I find institutional holdings information from Thomson Reuters in WRDS?

Content Type: Company Financials & Filings, WRDS

Subject: Corporate Governance, Mutual Funds, Ownership


  • Current HU faculty, students, and staff

  • Harvard University faculty, graduate students (including MBA students) and researchers can request a WRDS account
  • HU undergraduates may use WRDS in the Financial Databases Room.

Note: Use of WRDS is limited to academic and non-commercial research purposes. The right to access licensed databases and copyrighted material on the WRDS system is only for internal or academic research. You may not use data downloaded from WRDS for any commercial endeavor. In addition, you may not reveal, disclose, transfer, or share username and password information with anyone. Additional restrictions apply. See WRDS Terms of Use.

Use of this database implies acceptance of our Copyright and Licensing Restrictions.

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