Analyst upgrades:

• Citigroup upgraded Advanced Micro (NYSE: AMD) to Buy from Hold and raised its target to $5.50 from $4.25 citing valuation and expectations for the company's competitive position and gross margins to improve.
• Barclays upgraded American Express (NYSE: AXP) to Overweight from Equal Weight citing long-term earnings growth as the company benefits from declining charge-offs and credit costs. The firm has a $38 target on the stock.
• JPMorgan upgraded Arch Coal (NYSE: ACI) to Overweight from Neutral and raised its target to $22 from $19 citing the FTC approval for the acquisition of Jacobs Ranch mine and valuation.
• Bebe Stores (NASDAQ: BEBE) was upgraded to Overweight from Equal Weight at Stephens.
• Cheesecake Factory (NASDAQ: CAKE) was upgraded to Neutral from Underweight at Piper Jaffray.
• Ashland (NYSE: ASH) was upgraded to Buy from Hold at KeyBanc.

Monday October 8

• PDUFA date for Theravance Inc's (NASDAQ: THRX) Telavancin for complicated skin and soft tissue infections caused by gram-positive bacteria

Tuesday October 9

• Yum! Brands Inc (NYSE: YUM) to report Q3 earnings; conference call at 9:15am
• Optimal Group Inc (NASDAQ: OPMR) to hold conference call at 11am to discuss the WowWee acquisition
• Penn Treaty American Corporation (NYSE: PTA) to hold operational update at 11am
• Alcoa Inc (NYSE: AA) to report Q3 earnings; conference call at 5pm

Wednesday October 10

• Costco Wholesale Corporation (NASDAQ: COST) to report Q4 earnings; conference call at 11am
• Hot Topic Inc (NASDAQ: HOTT) and Zumiez Inc (NASDAQ: ZUMZ) reporting monthly sales at 4pm

Thursday October 11

• Pepsico Inc (NYSE: PEP) to report Q4 earnings; conference call at 11am
• Bebe Stores Inc (NASDAQ: BEBE) to report monthly sales at 7am, Limited Brands Inc (NYSE: LTD) and The Children's Place Retail Stores Inc (NASDAQ: PLCE) at 7:30am, The Gymboree Corporation (NASDAQ: GYMB) at 7:55am, AnnTaylor Stores Corporation (NYSE: ANN), Gap Inc (NYSE: GPS) and Wal-Mart Stores Inc (NYSE: WMT) at 8am, Target Corporation (NYSE: TGT) at 8:30am.

Friday October 12

• PDUFA date for GlaxoSmithKline Plc's (NYSE: GSK) Hycamtin for relapsed Small Cell Lung Cancer

MOST NOTEWORTHY: Openwave Systems Inc (NASDAQ: OPWV), Trump Entertainment Resorts Inc (NASDAQ: TRMP) and Accredited Home Lenders Holding Co (NASDAQ: LEND) were today's noteworthy downgrades:

• Openwave Systems Inc (NASDAQ: OPWV) was downgraded to Underperform from Buy at Needham, as the firm no longer believes the company's assets and balance sheet are worth $11/share and expects the franchise to be again disrupted due to layoffs and asset sales. Openwave was also downgraded to Neutral from Overweight at JP Morgan, to Hold from Buy at Wedbush after no superior bid emerged to Harbinger's, and to Sector Underperformer from Outperformer at CIBC World Markets, which cited reduced prospects of a buyout.

• Trump Entertainment Resorts Inc (NASDAQ: TRMP) was downgraded to Underperform from Peer Perform at Bear Stearns citing valuation as upside from a takeout at current levels is remote.

• Accredited Home Lenders Holding Co (NASDAQ: LEND) was downgraded to Market Perform from Outperform at Keefe Bruyette & Woods following its acquisition by Lone Star for $400M.

OTHER DOWNGRADES:

• Bebe Stores Inc (NASDAQ: BEBE) was downgraded to Market Perform from Outperform at Friedman Billings citing new merchandise that lacks a significant casual component to drive business, tough comps, aggressively planned inventory levels for 2H, and the potential for sustained negative comps during the next few quarters.

• Friedman Billings also downgraded Aladdin Knowledge Systems Limited (NASDAQ: ALDN) to Market Perform from Outperform based on valuation and challenges in the U.S. market.

• General Mills Inc (NYSE: GIS) was downgraded to Peer Perform from outperform at Bear Stearns on valuation and concerns with the turnaround plan for Big G cereal division.

Analyst summaries provided by TheFlyOnTheWall.com (subscription required).