Among the stock activity stories for Thursday, May 30, from AP Business News:
— Facebook Inc. outpaced a broader climb in U.S. markets, with two industry analysts upgrading their rankings on the company, citing potentially fat revenue streams materializing later year.
— Michael Kors Holdings Ltd. hit an all-time high after it reported that its fourth-quarter profit more than doubled on surging sales and it offered a solid outlook.
— Shares of Ironwood Pharmaceuticals Inc. rose after a Wedbush analyst upgraded the stock, saying growth in prescriptions for the company's bowel drug Linzess has been better than he expected.
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