(Reuters) - The Massachusetts public employees pension fund has divested all of its stakes in companies with major ties to Iran's energy industry, joining a campaign to pressure the country to stop developing nuclear weapons, state Treasurer Steve Grossman said on Tuesday.

The decision by the nearly $50 billion Massachusetts fund, called Pension Reserves Investment Management, follows similar divestitures by other states including New York, Florida and Georgia, Grossman said by telephone.

"Massachusetts's efforts are very much in concert with the sanctions being imposed by Washington and Europe," he said in a statement...

Read more: http://www.reuters.com/article/2012/01/04/us-massachusetts-iran-idUSTRE8...