CRSP US Stock Database

The database that started it all, a unique research source characterized by unmatched breadth and depth

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CRSP is renowned for its expertise in building and maintaining historical, academic, research-quality stock market databases.

Key Features

Documents & Resources

Flat File Format 2.0 User Guide

A table by table listing of data items with short definitions

Data Descriptions Guide

A detailed guide of definitions, calculations, methodologies, coding schemes, and database structures

Flat File Format 2.0 Metadata Guide

Streamlines ingestion into proprietary systems and online tools

Cross Reference Guide

A guide for transitioning from Flat File Format 1.0 (SIZ) to Flat File Format 2.0 (CIZ)

Executive Summary

An overview of known differences between old and new file formats; new data items; and new features

Flat File Format 1.0 User Guide

Previous version of the user guide

Data Access Tools

Information on data access for this product

Release Notes

Monthly/Quarterly/Annual release notes

CRSP databases are characterized by their comprehensive corporate action information and highly accurate total return calculations.