BOSTON, MA - January 10, 2006 - KLD Indexes announced today that it added Quest Diagnostics Incorporated to KLD's Domini 400 Social^SM Index (DS 400 Index). KLD Indexes is a division of KLD Research & Analytics, Inc., an independent investment research firm providing investment management tools used by professionals to serve clients requiring investment strategies based on corporate social and environmental performance.

         Quest Diagnostics (NYSE:DGX) was added after the close of trading December 30, 2005. Quest Diagnostics provides routine testing services for cholesterol, HIV, pregnancy, alcohol and drugs. In addition the company provides gene-based testing and non-gene-based esoteric testing for areas such as endocrinology and metabolism. Quest manufactures and markets diagnostic test kits and systems primarily for esoteric testing under the Nichols Institute Diagnostics brand name. The company also conducts clinical trials testing for pharmaceutical companies. Quest is headquartered in Lyndhurst, New Jersey.

         KLD Indexes added Quest Diagnostics because it provides critical products and services in the health care sector, including HIV testing. The company has established a thorough quality management program through which each employee receives annual training related to compliance and quality topics. All employees are eligible for a cash profit sharing program, which is based on financial and non-financial metrics, including reaching quality goals. Quest also promotes employee involvement through local "town" meetings, which provide an opportunity for employees to question senior management or provide feedback, and through employee satisfaction surveys. In addition, Quest has a notably strong diversity record.

Summary of changes to KLD's Domini 400 Social Index - December 15, 2005

About KLD's Domini 400 Social Index

         KLD's Domini 400 Social Index is a float-adjusted market capitalization weighted common stock index modeled on the S&P 500^® Index. The DS 400 Index is the first benchmark for equity portfolios subject to multiple social screens. It is a widely recognized benchmark for measuring the impact of social screening on financial returns and the performance of socially screened portfolios.

About KLD Indexes

         KLD Indexes, a division of KLD Research & Analytics, Inc., constructs indexes for investors who integrate environmental, social and governance factors into their investment decisions. Investors, trustees and consultants depend on the quality and integrity of KLD Indexes, which are designed to be transparent, representative and investable. Today, more than $10 billion is invested in funds based on KLD's family of seven indexes, including the Domini 400 Social Index, KLD Select Social^SM Index, KLD Global Climate 100^SM Index, KLD Broad Market Social^SM Index, KLD Large Cap Social^SM Index, KLD Catholic Values 400^SM Index and KLD NASDAQ Social Index.

         For more information about KLD Indexes, please see our website (www.KLDIndexes.com) or contact Priya Khetarpal by phone (617.426.5270 x218) or e-mail (pkhetarpal@kld.com).