Cypress Gains as Ramius Boosts Bid to $5.50 a Share

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Cypress Bioscience Inc. gained the most in almost five months in Nasdaq trading after Ramius LLC increased its offer to buy the company by 29 percent, to $5.50 a share.

Shares of Cypress, based in San Diego, surged 21 percent, or 87 cents, to $4.93 at 4 p.m. New York time for the biggest gain since July 19. The stock has lost 15 percent this year.