Sepracor Surges

Shares of Sepracor Inc. (SEPR) surged $4.63 to close at $54.15 following rival Neurocrine Biosciences Inc.'s (NBIX) announcement last week that it may need to conduct more tests on its sleep aid Indiplon. Sepracor makes the insomnia drug Lunesta. Neurocrine stock dropped $1.06 to close at $14.12.