>>> US Large Movers

Large Cap Gainers

- BSX (13.23 +4.26%): Upgraded to Buy from Neutral at BofA/Merrill - C (47.6 +4.21%): Beat quarterly EPS by $0.15 ($1.30 vs $1.15 estimate), revs fell 0.6% yoy to $20.12 bln vs $19.46 bln estimate; upgraded to Hold from Sell at Rafferty - STX (55.09 +3.18%): Upgraded to Buy from Hold at Argus

Large Cap Losers

- NBG (4.66 -10.90%): Reuters and Bloomberg reporting that co is planning a EUR 2.1 bln capital raise - AR (60.73 -3.94%): Reported Q1 avg net daily gas equivalent production is estimated to be 783 to 787 MMcfe/d, a 105% increase over the prior year quarter and 16% sequentially; avg net daily liquids production is estimated to be 16,000 to 16,500 Bbl/d, a 580% increase over the prior year quarter and 45% sequentially; avg realized natural gas price before hedging is estimated to be $5.02 to $5.06 per Mcf, an approximate $0.08 to $0.12 premium to NYMEX after Btu upgrade - ERIC (12.8 -2.51%): Announced that Douglas Gilstrap will resign from his role as Senior Vice President and Head of Group Function Strategy and leave Ericsson's Executive Leadership Team

Mid Cap Gainers

- EW (82.48 +13.03%): Federal court granted a preliminary injunction limiting the sale of Medtronic's (MDT) CoreValve system in the United States; Upgraded to Buy from Fair Value at CRT Capital, target raised to $87 from $79; upgraded to Neutral from Underweight at JP Morgan - AHL (43.7 +11.00%): Board of Directors rejected unsolicited proposal from Endurance (ENH) to acquire the company at $47.50/share, believes proposal undervalues the co and is a strategic mismatch - HLF (55.57 +7.94%): Rebound following sharp declines seen prior to close last Friday on reports that co is under investigation by the FBI Mid Cap Losers - CZR (18.21 -2.78%): Co's Caesars Growth Properties Holdings unit sees Q1 (Mar) revs of $280-305.5 mln; mentioned cautiously at Barron's STM (8.55 -2.51%): Downgraded to Sell from Neutral at UBS - ENH (52.98 -1.56%): Trading lower following rejection of offer to acquire Aspen Insurance for ~$47.50 per share