Capital Markets Index - How IT Works

How It Works

Dorchester has collected over 30 years of historical data—including government statistics and market changes—which now are stored in the company's computers (two systems in Houston and a redundant system in Chicago). Each day 200 million pieces of information are added.

The data is organized, processed and updated every 15 seconds. This statistical selection removes the subjectivity associated with other indexes. It accurately represents the history, mix and behavior of the capital markets.

How the index is calculated

1. Real-time and historical data have been acquired from multiple financial and government sources.
2. Data is organized, normalized and processed.
3. Dorchester's CPMKTIG is formulated, using all the investment-grade capital market assets and allocations.
4. CPMKTS is the real-time index representation of the entire investment-grade U.S. capital market as derived from CPMKTIG and calculated by Dorchester and the AMEX.
5. The AMEX publishes CPMKTS and its component indexes on the "tape" every 15 seconds.