“In the boom years of the 1950s, the 10 biggest companies, including AT&T, DuPont, and General Motors, regularly exceeded 30% of the value of all U.S. stocks. In July 1955, GM alone—up 78% over the previous 12 months—amounted to 6.8% of the value of the entire U.S. stock market, according to the Center for Research in Security Prices.”
Read the full article at the Wall Street Journal.
As communicated previously, CRSP is migrating to a new back office. This requires that subscribers migrate to the Stock & Indexes Flat File Format 2.0 (CIZ), which was made available in summer 2022. The December 2024 data which will be released in January 2025, is scheduled to be the last release of datasets produced in the Legacy (FIZ) and Flat File Format 1.0 (SIZ) formats. Subscribers may refer to several documents to become familiar with the Flat File Format 2.0 (CIZ) files.
In The Picker’s Penance, CRSP data analyzes the long-term results of active stock-picking strategies. The article explores challenges investors face in consistently outperforming the market, with CRSP’s reliable datasets offering
Using CRSP Market Indexes Methodology, CRSP Count™ tracks changes in the number of securities by market cap segments – Mega, Mid, Small and Micro – through time.
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