Analyst Upgrades

• SanDisk (SNDK) was upgraded to outperform from neutral at RW Baird.
• JPMorgan resumed Potash (POT) at overweight, up from neutral.
• Ariba (ARBA) was upgraded to buy from neutral at Roth Capital.
• Cirrus Logic (CRUS) was upgraded to buy from hold at Jefferies.
• Morgan Stanley upgraded Tesoro (TSO) to overweight from equal weight.
• Solarfun Power (SOLF) was upgraded to buy from hold at Auriga.
• Barclays upgraded Ciena (CIEN) to overweight from equal weight.
• Optimer Pharm (OPTR) was upgraded to outperform from market perform at JMP Securities.
• Argo Group (AGII) was upgraded to outperform from market perform at FBR Capital.
• BofA/Merrill upgraded Green Mountain (GMCR) to buy from underperform and Southern Company (SO) to neutral from underperform.

Analyst Upgrades

• JPMorgan upgraded Vivus (VVUS) to overweight from neutral.
• Citigroup upgraded Corn Products (CPO) to buy from hold.
• Maxim Integrated (MXIM) was upgraded to outperform from market perform at FBR Capital.
• Cardinal Health (CAH) was upgraded to outperform from neutral at RW Baird.
• Citigroup upgraded Monster Worldwide (MWW) and EchoStar (SATS) to buy from hold, as well as Las Vegas Sands (LVS) to buy from sell.
• BMO Capital upgraded Potash (POT) and Barrick Gold (ABX) to outperform from market perform.

Analyst Upgrades

• Raymond James upgraded Research in Motion (RIMM) to outperform from market perform based on valuation. The firm has a $70 price target on the stock.
• Macquarie upgraded Halliburton (HAL) to outperform from neutral and has a $40 price target on the stock. The firm said recent pressure pumping activity is above their expectations and pricing has firmed.
• Canaccord upgraded Baldor Electric (BEZ) to buy from speculative buy, citing improving business trends and the upcoming mandatory transition to premium efficiency motors. The firm has a $47 price target on the stock.
• Wells Fargo upgraded Williams-Sonoma (WSM) to outperform from market perform.
• Medco Health (MHS) was upgraded to conviction buy from buy at Goldman.
• Repsol (REP) was upgraded to buy from neutral at BofA/Merrill.

Analyst Upgrades

• Citigroup upgraded FMC Technologies (FTI) to buy from hold, citing pent-up deepwater drilling demand and valuation. Despite upgrading, the firm lowered its target for shares to $69 from $77.
• Piper Jaffray upgraded Valeant (VRX) to overweight from neutral following the company's merger with Biovail (BVF) and raised its target for shares to $53 from $43.
• Deutsche Bank upgraded Lincare Holdings (LNCR) to buy from hold, citing valuation and the company's dividend initiation. The firm upped its target for shares to $37 from $35.
• Ariba (ARBA) was upgraded to overweight from neutral at JPMorgan.
• Crucell (CRXL) was upgraded to buy from hold at RBS.
• ENI SpA (E) was upgraded to buy from neutral at Goldman.

Analyst Upgrades

• FBR Capital upgraded Halliburton (HAL) to outperform from market perform as it sees less headline risk from the Gulf of Mexico spill following Wednesday's House Energy and Commerce Committee hearing. The firm upped its target for shares to $44 from $35.
• FBR Capital also upgraded Morgan Stanley (MS) to outperform from market perform as it views the valuation as attractive following the recent pullback in shares. The firm maintains a $35 price target for shares.
• Deutsche Bank upgraded Avnet (AVT) to buy from hold on valuation; it views the recent pullback as a buying opportunity. The firm raised its target for shares to $39 from $36.
• U.S. Steel (X) was upgraded to conviction buy from buy at Goldman.
• News Corp. (NWS) was upgraded to buy from hold at Argus.
• Sprint (S) was upgraded to outperform from market perform at Raymond James.

Analyst upgrades:

• Morgan Stanley upgraded shares of Apple (NASDAQ: AAPL) to Overweight from Equal Weight on expectations of continued iPhone growth. The firm raised its target on the stock to $180 from $105.
• FBR Capital upgraded Bank of America (NYSE: BAC) to Market Perform from Underperform as it sees limited downside with half of the company's capital plan completed. The firm keeps a $12 target on the stock.
• Jefferies upgraded Cash America (NYSE: CSH) to Buy from Hold to reflect a strengthened balance sheet following the capital raise and easing regulatory risk. The firm raised its target price to $30 from $22.
• Ericsson (NASDAQ: ERIC) was upgraded to Outperform from Market Perform at Bernstein.
• MB Financial (NASDAQ: MBFI) was raised to Outperform from Neutral at Baird.
• Pinnacle West (NYSE: PNW) was upgraded at Credit Suisse to Outperform from Neutral.

Analyst upgrades:

• JP Morgan upgraded Altria (NYSE: MO), citing the company's 25% cash return to shareholders by 2010 and its market leadership.
  
• RBC Capital upgraded Core Laboratories (NYSE: CLB) based on its solid balance sheet and liquidity, strong market positions, and technology-driven products.
  
• RBC Capital believes Schlumberger's (NYSE: SLB) earnings will decrease the least vs. its peers through 2010 and notes its breadth of products/services.
• Tellabs (NASDAQ: TLAB) upgraded to Overweight from Equal Weight at Barclays.
  
• Bally Tech (NYSE: BYI) upgraded to Buy from Neutral at Goldman.
  
• Best Buy (NYSE: BBY) upgraded to Buy from Neutral at Piper Jaffray.

Analyst downgrades:

• Goldman downgraded Apple (NASDAQ: AAPL) citing consumer spending concerns and valuation.
  
• Merrill downgraded JP Morgan (NYSE: JPM) citing expectations for credit costs to get worse in the US.
  
• Wachovia downgraded a handful of names, including Chesapeake (NYSE: CHK), in the Exploration & Production space as they believe natural gas prices have more downside in order to balance supply/demand fundamentals.

MOST NOTEWORTHY: Ariba, Meredith Corp and Time Warner Telecom were today's noteworthy initiations:

• Montgomery initiated Ariba (NASDAQ: ARBA) with a Buy rating and $14 target and said ARBA's SaaS transition is essentially completed and that the benefits of higher cash flow, new sales hires, product releases, and new markets should be seen in FY08.
  
• Jefferies resumed coverage of Meredith Corp (NYSE: MDP) with a Hold rating and $59-$61 target and expects ad growth to slow given the current economic backdrop.
  
• Citigroup initiated Time Warner Telecom (NASDAQ: TWTC) with a Buy rating and $29 target. The named TWTC its top pick in the emerging telco sub-sector based on its differentiated niche position, strong fiber assets and sustainable revenue growth.

OTHER INITIATIONS:

• JP Morgan started Arcelor Mittal (NYSE: MT) and Daktronics (NASDAQ: DAKT) with Overweight ratings.
  
• Lehman started Transocean (NYSE: RIG) with an Overweight rating.
  
• Bear Stearns initiated StatoilHydro (NYSE: STO) with an Outperform rating.
  
• Credit Suisse initiated Colgate-Palmolive (NYSE: CL) with an Outperform rating and $87 target.

MOST NOTEWORTHY: 1-800-Flowers.com, Ctrip.com International, 51job and Choice Hotels were today's noteworthy initiations:

• Nollenberger started shares of 1-800-Flowers.com (NASDAQ: FLWS) with a Buy rating and $14 target and believes shares are undervalued at current levels given the company's compelling growth prospects, strong cash flow generation, and solid balance sheet.
  
• Bear believes Ctrip.com (NASDAQ: CTRP) is the best positioned online travel company ahead of structural changes and consolidation in China's fragmented travel agency industry. The firm initiated shares with an Outperform rating and $80 target.
  
• Bear expects 51job (NASDAQ: JOBS) to benefit from China's increasing Internet user base due to the internet's broadening reach among job seekers, resuming coverage with an Outperform rating and $28 target.
  
• Goldman started Choice Hotels (NYSE: CHH) with a Buy rating and $45 target, as they are positive on the stock given unit growth and minimal capital needs, among other reasons.

OTHER INITIATIONS:

• Thomas Weisel initiated On Semiconductor (NASDAQ: ONNN) with an Overweight rating and $15 target.
  
• Broadpoint initiated Ariba (NASDAQ: ARBA) with a Buy rating and $15 target and Ultimate Software (NASDAQ: ULTI) with a Neutral rating.
  
• Merrill started shares of Savient Pharmaceuticals (NASDAQ: SVNT) with a Neutral rating.

MOST NOTEWORTHY: EMC Corporation, Tesco PLC, SL Green Realty, Ariba and Motorola were today's noteworthy upgrades:

• EMC Corporation (NYSE: EMC) was upgraded to Outperform from Peer Perform at Bear Stearns on valuation. Shares were also upgraded to Buy from Hold at Citigroup after coming off restriction to reflect the long-term benefits of virtualization and valuation.
  
• Tesco (OTC: TSCDY) was upgraded to Buy from Hold at Citigroup on valuation and the company's growth prospects.
  
• SL Green Realty Corporation (NYSE: SLG) was upgraded to Buy from Hold at Keybanc based on valuation. The firm views concerns regarding NYC office demand as overblown.
  
• Cowen expects FY07 to be a tough year for Ariba Inc (NASDAQ: ARBA) as benefits from the on-demand subscription model are realized. The firm upgraded shares to Outperform from Market Perform.
  
• Motorola Inc (NYSE: MOT) was upgraded to Outperform from Sector Perform at RBC Capital citing firming trends in its handset division.

OTHER UPGRADES:

• Jefferies upgraded Optium Corporation (NASDAQ: OPTM) to Buy from Hold.
  
• JP Morgan upgraded Susster Holdings Corporation (NASDAQ: SUSS) to Overweight from Neutral.
  
• Thomas Weisel upgraded Vishay Intertechnology (NYSE: VSH) to Overweight from Market Weight.
  
• Royal Caribbean Cruises (NYSE: RCL) was upgraded to Strong Buy from Outperform at Raymond James.

MOST NOTEWORTHY: Apple (AAPL), Ariba (ARBA), EMC Corp (EMC), Anadarko Petroleum (APC) and RealNetworks (RNWK) were today's noteworthy upgrades:

• Apple Inc (NASDAQ: AAPL) was upgraded to Buy from Hold with a $160 target at Citigroup following yesterday's pullback; they believe Mac should remain strong through year-end, Q3 consensus estimates look conservative and believe production cuts should not be a surprise.

• Roth Capital upgraded shares of Ariba (NASDAQ: ARBA) to Buy from Hold as they believe shares work higher over then next few quarters; they expect seasonally strong September and December quarters and believe that revenue bottomed last year.

• Goldman added EMC Corp (NYSE: EMC) to its Conviction Buy List, citing Q2 results and multiple product cycles.

• Anadarko Petroleum (NYSE: APC) was raised to Market Perform from Underperform at BMO Capital following better than expected Q2 results and guidance.

• RealNetworks (NASDAQ: RNWK) was upgraded to Hold from Sell at Soleil on valuation after reporting solid Q2 earnings...

OTHER DOWNGRADES:

• PetSmart (NASDAQ: PETM) was upgraded to Outperform from Neutral at Credit Suisse.

• BWS Financial raised Xoma (NASDAQ: XOMA) to Buy from Hold.

• Matrix upgraded McGraw-Hill Cos (NYSE: MHP) to Buy from Hold.

• Matrix also raised Raytheon (NYSE: RTN) to Strong Buy from Buy.

• Wachovia upgraded St. Joe Co (NYSE: JOE) to Market Perform from Underperform.

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

MOST NOTEWORTHY: XM Satellite Radio Holdings Inc (XMSR), Sirius Satellite Radio Inc (SIRI) and Pediatrix Medical (PDX) were today's most notable initiations:

• Wedbush initiated XM Satellite Radio Holdings Inc (NASDAQ: XMSR) with a Hold rating and $15 target, expecting a few tough quarters due to market share loss.
• Wedbush also initiated shares of Sirius Satellite Radio Inc (NASDAQ: SIRI) with a Buy rating and $5 target. The firm believes Q4 subscriber tallies suggest market share gains to over 60% in retail channels.
• Pediatrix Medical (NYSE: PDX) was initiated with a Top Pick rating and $60 target at RBC. The firm believes Pediatrix could experience accelerating growth over the next several years due to adding anesthesiology to its core newborn franchise.

OTHER INITIATIONS:

• Rochdale initiated Maxwell Tech Inc (NASDAQ: MXWL) with a Buy rating and $20 target.
• AG Edwards started Genentech Inc (NYSE: DNA) with a Hold rating, as the firm believes shares are fairly valued.
• Trump Entertainment Resorts Inc (NASDAQ: TRMP) was started with a Buy rating at Goldman Sachs.
• Deutsche Bank initiated Ariba Inc (NASDAQ: ARBA) with a Buy rating and $12 target.
• Alcatel-Lucent ADS (NYSE: ALU) was initiated with a Peer Perform at Bear Stearns.

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