The fund is distributed by the Calvert Group of Washington.

The Calvert Group, for example, recently eliminated a policy barring investment in companies deriving more than 10 percent of revenue from the arms business.

The fund is managed by the Calvert Group in Washington.

Ariel is dropping its longtime partner, the Calvert Group, which specializes in "socially responsible" investing.

The Calvert Group of funds in Bethesda, Md., is adding governance, especially disclosure issues, to its focus on the environment and other social concerns.

As mutual funds go, the Calvert Group is hardly typical.

For example, the Calvert Group, which sells mutual funds, offers a "one-time $350 reimbursement toward purchase of a bicycle for commuting."

The fund's distributor is the Calvert Group of Bethesda, Md.

Calvert Group, the largest mutual fund family to invest only in companies with good social and ethical records, is at a crossroads.

"This caused us to look very carefully at corporate governance issues in our screening process," said Barbara Krumsiek, the president of the Calvert Group.