Center For Research In Security Prices - CRSP

What Does Center For Research In Security Prices - CRSP Mean?
A research center at the University of Chicago Graduate School of Business. The Center for Research In Security Prices (CRSP) is a vendor of historical time series data on securities. CRSP is a non-profit center that is used by academic, commercial and government agencies to access information such as price, dividends and rates or returns on stocks.

Investopedia explains Center For Research In Security Prices - CRSP
CRSP was founded in 1960 with a $300,000 grant from Merrill Lynch. It is located in the Chicago financial district. CRSP provides historical data on securities, with primary listings on the NYSE, Nasdaq, AMEX and ARCA. The information is provided to subscribers, and assists them in their financial analysis, economic forecasting and stock market research. Information can be found on stocks, indices, treasuries, mutual funds and real estate.