THOMSON REUTERS MUTUAL FUND HOLDINGS (WRDS) (Thomson Reuters) Thomson Reuters Mutual Fund Holdings (formerly: CDA S12) provides security holding information for all registered mutual funds that report their holdings with the SEC, plus 3’000 global funds. Information is available since 1980. It is possible to link the data through MFLinks (via WRDS) to CRSP Mutual Fund database which in particular covers mutual fund performance information. Thomson Reuters Mutual Fund Holdings is delivered through the Wharton Research Data Services (WRDS) platform. Please read carefully the accompanying information on how to use and access WRDS.