The Center for Research in Security Prices, LLC (CRSP) is a provider of historical stock market and investable index data. CRSP is an affiliate of the Booth School of Business at the University of Chicago. CRSP maintains some of the largest and most comprehensive proprietary historical databases in stock market research. Academic researchers and investment professionals rely on CRSP for accurate, survivor bias-free information which provides a foundation for their research and analyses. As of 2023, CRSP claims over 600 clients. The name is usually pronounced "crisp".