Base Date and Base Value
The base date for The Dow Jones China Offshore 50 Index is December 31, 2000, with a base value of 1000.

Index Formula
The Dow Jones China Offshore 50 Index is calculated using Laspeyres' formula, meaning it measures price changes against a fixed-based-period quantity weight.

Dividend Treatment
The Dow Jones China Offshore 50 Index is calculated in both price-return and total-return forms in U.S. dollars. The total-return series accounts for all dividend payments. The price-return series accounts only for special dividends — from either non-operating income or cash dividends that are larger than 10% of the equity's price.

Weighting
The Dow Jones China Offshore 50 Index is capitalization-weighted. The float-adjusted shares outstanding for each class of stock are used to determine the company's market capitalization. Float adjustments are based on the rules in Section 7 of the Guide to the Dow Jones Global Indexes. The weighting of each component is capped at 10% of the index's total market capitalization at the quarterly updates.

Dissemination
The index is calculated and disseminated every 15 seconds whenever any of its primary exchanges are open. On exchange holidays, the previous day's closing price for each affected stock is used for index calculation. If a corporate action becomes effective on an exchange holiday, the adjusted closing price for the previous busi¬ness day is used.

Stock Prices
The Dow Jones China Offshore 50 Index is computed using the last-traded prices of its components during the official trading hours of the components' primary exchanges. Index calculation begins when the first official opening component price is received. Until a particular stock opens, its adjusted closing price from the previous day is used in index computation. If trading of a stock is halted during a session, its last-traded price is used in all subsequent index computations until trading resumes. If trading is suspended before the opening, the stock's adjusted closing price from the previous day is used to calculate the index.

Input Data
Real-time stock prices are provided by Reuters. The latest trading price is used for index calculation.

The number of shares is determined separately for each class of stock. This information is obtained from a variety of data vendors. The data are also sourced from the companies themselves.

Corporate actions are sourced from public news services, regulatory filings and data vendors. The companies themselves are used as an additional source.

Float data are obtained from a variety of sources including data vendors, exchanges, regulators and the companies themselves.

Computational Precision
Index values are rounded to two decimal places and divisors are rounded to six decimal places. Any values derived by the index calculation engine from a corporate action used for the divisor adjustments and index computations are rounded to six decimal places.