Massachusetts state Treasurer Shannon P. OBrien announced the states $2.6 billion 457 Deferred Compensation Plan, Boston, will add seven investment options starting June 1, bringing the total to 15. Aetna Financial Services will be the new provider of administration and record-keeping services, replacing Copeland. The new fund options are: bond index; actively managed bonds; small-cap index; international index; and three lifecycle funds in conservative, moderate and aggressive investing styles. The plan will continue to offer participants life insurance, stable-value, balanced, money market, S&P 500 stock index, active large-cap growth, active small-cap growth, and active international equity funds, said Dwight Robson, a spokesman for the treasurer. The plan also intends to add emerging market and sector funds in the next few years, Mr. Robson said. Aetna was selected to replace Copeland because it offered services including five additional regional offices and lower fees that will save the plans 123,000 participants $2.6 million over three years, he said. Calls to Copeland werent returned by deadline.