Security Master File Data

DTCC’s Security Master File Data service provides the most up to date, comprehensive, centralized and reliable source of DTCC eligible securities' information to the market.


DTCC’s Security Master Files enrich users' own security master data, creating a reliable, golden source of data and ensuring trades settle on time. Users can leverage trade processing efficiencies through this comprehensive, trusted data set, which describes more than 4 million active securities held at DTCC.

Because they are the same data used to service the assets eligible at DTCC, clear trades and settle obligations through DTCC subsidiaries, DTCC's Security Master Files enable users to meet critical data quality requirements throughout the life cycle of a security.




High Quality Data
Increase accuracy resulting in fewer exceptions by receiving data from a trusted and reliable source.
Comprehensive Source
Reduce costs by using a single consolidated source that includes all asset classes serviced through DTCC.
Trusted Source
Internal processing is synchronized with data driving U.S. clearance and settlement
One data set
Cost reductions from using a single, consolidated source
Processed via DTCC Underwriting
Reduce risk and increase straight-through processing for securities transactions with reliable data that must meet strict DTCC underwriting standards.


  • Master files with daily update files of security master information


DTCC’s Security Master Files represent the full population of securities eligible at DTCC – more than 4 million in total – that are updated on a daily basis. Complete master files are available to support periodic reconciliation. File availability is dependant on service subscription.

Estimated number of securities by asset class:


This service provides daily security master data for DTCC eligible securities with an expansive list of data elements and multiple asset slices. The master files are available on the last Saturday of the month and daily update files are published at 10:00PM ET.

(MMI is available Intraday: 10:00 AM ET, 12:00 PM ET, 1:00 PM ET, 4:00 PM ET, 10:00 PM ET)

Subscribers can choose from the following asset classes:

  • Asset and Mortgage Backed
  • Corporate Bond and Trusts
  • Equity
  • Government
  • Money Market Instruments (CP, VRDO, MTs, etc.)
  • Municipals

How It Works

DTCC's Security Master Database is updated on a daily basis. As new securities are brought to market, DTCC's underwriting process ensures that complete and accurate information is captured and vetted before the issue is deemed DTCC eligible.


  • Intra-day MMI: Over the Internet via SFTP
  • All Others: Direct Connection
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