Shares of investment firm State Street fell after investors balked at the $4.5 billion price tag it paid for a smaller rival in February, but weakness in the shares now gives investors the chance get a piece of the firm when it is poised to benefit from expanding global securities markets, Barron's reported on Sunday.

State Street's shares are trading at 16 times its 2008 earnings forecast, or significantly below their normal 20 times forward estimates, Barron's said.

Richard Bove, an analyst at broker Punk Ziegel, said in the article that State Street's acquisition, of Investor Financial Services only enhanced their superb international position.

The lower multiple certainly creates a buying opportunity, added Bove, who has an $85 target on the stock, according to Barron's. That is more than 20 percent higher than the firm's Friday closing price of $68.32 per share.