Analyst upgrades:

• FBR Capital upgraded Frontline (NYSE: FRO) to Market Perform from Underperform to reflect the company's above-average day rates and alleviated near-term financing pressures. The firm raised its target on shares to $23 from $14.
• Baird upgraded Varian Medical (NASDAQ: VARI) to Outperform from Neutral and said checks at ESTRO meeting indicate European radiation therapy market demand will remain "respectable" in 2010 and that launch of Unique could drive incremental demand in developing markets. The firm has a $49 target on shares.
• Goldman believes GameStop (NYSE: GME) Street expectations are beatable and valuation is attractive. The firm upgraded shares to Conviction Buy from Neutral and has a $28 target.
• Borg-Warner (NYSE: BWA) was upgraded to Outperform from Market Perform at Wells Fargo.
• KKR Financial (NYSE: KFN) was upgraded to Outperform from Market Perform at JMP Securities.
• Cathay Pacific (OTC: CPCAY) was upgraded to Outperform from Neutral at Credit Suisse.

Agilent Technologies (NYSE: A), a manufacturer of equipment for scientific testing, reported third quarter earnings on Monday after the bell. It was a challenging quarter for the business, but estimates were beat, at least.

Revenues fell 27%. Earnings on an adjusted basis likewise took a severe tumble, coming in at 15 cents per share. Agilent made well over three times that amount in the year-ago quarter. Here's the saving grace: according to Reuters, the company earned four more pennies than the average estimate.

Analyst upgrades:

• Jefferies upgraded Autodesk (NASDAQ: ADSK) to Buy from Hold after the firm's channel checks indicated the company's business is stabilizing. Jefferies raised its target on shares to $27 from $20.
• Citigroup upgraded Veeco (NASDAQ: VECO) to Buy from Hold on expectations LED order momentum will continue and cost discipline will help margin leverage. Citi raised its target on shares to $24 from $8.
• Deutsche Bank upgraded Domtar (NYSE: UFS) to Buy from Hold on expectations earnings will improve meaningfully over the next year. The firm keeps a $24 price target on the stock.
• Varian (NASDAQ: VARI) was upgraded to Equal Weight from Underweight at Barclays.
• Air Products (NYSE: APD) was upgraded to Overweight from Neutral at JPMorgan.
• U.S. Steel (NYSE: X) was upgraded to Buy from Neutral at Goldman.

Analyst upgrades:

• Citigroup upgraded shares of Corning (NYSE: GLW) to Buy from Hold as it believes LCD glass production and sales have bottomed and will pick-up in Q2. The firm raised its target price to $16 from $11.25.
  
• Thomas Weisel upgraded Celera (NASDAQ: CRA) to Overweight from Market Weight based on valuation and its strong business model.
  
• ThinkEquity upgraded Varian Semi (NASDAQ: VARI) to Buy from Accumulate and raised its target to $32 from $20 based on valuation and weakness at its sole competitor.
• Sanofi-Aventis (NYSE: SNY) was upgraded to Hold from Underperform at Jefferies.
  
• Agilent (NYSE: A) was raised to Outperform from Neutral at Credit Suisse.
  
• Liberty Interactive (NASDAQ: LINTA) was upgraded at JP Morgan to Neutral from Underweight.

Analyst upgrades:

• Keefe Bruyette upgraded IberiaBank (NASDAQ: IBKC) to Market Perform from Underperform following the company's capital raise, which the firm believes strengthens IberiaBank's balance sheet. Baird upgraded IberiaBank to Outperform from Neutral based on valuation following weakness related to the $100M capital raise.
  
• Pali upgraded shares of Urban Outfitters (NASDAQ: URBN) to Neutral from Sell on valuation as they believe the company's comp slowdown is largely priced in at current levels.
  
• Morgan Keegan upgraded Casey's General Store (NASDAQ: CASY) to Outperform from Market Perform based on valuation, healthy SSS, and easing comps.
• Cabot OIl & Gas (NYSE: COG) and Royal Dutch Shell (NYSE: RDS.A) were added to Goldman's Conviction Buy List.
  
• American Capital (NASDAQ: ACAS) was raised to Market Perform from Underperform at Friedman Billings.
  
• CIBC lifted Manulife (NYSE: MFC) to Sector Outperformer from Sector Performer.

Analyst downgrades:

• Goldman downgraded Caterpillar (NYSE: CAT) to Sell from Neutral based on expectations for reduced capex spending by mining and oil & gas companies and the impact from the credit crunch.
  
• Deutsche Bank downgraded auto companies and suppliers as they believe the failed government bailout increases risks. Ford (NYSE: F), American Axle (NYSE: AXL), Magna International (NYSE: MGA) and Lear (NYSE: LEA) were downgraded to Sell from Hold.
  
• SAP (NYSE: SAP) was cut to Hold from Buy at Jefferies to reflect the "deteriorating" corporate IT spend environment.
• Waters (NYSE: WAT) was downgraded to Neutral from Overweight at JP Morgan.
  
• Agilent (NYSE: A) was lowered to Equal Weight from Overweight at Barclays; the firm also downgraded Varian (NASDAQ: VARI) to Underweight from Equal Weight.

Analyst initiations:

• Jefferies believes Core Laboratories (NYSE: CLB) is well positioned to benefit from the increasing need for reservoir optimization services. Shares were initiated with a Buy rating and $70 target.
  
• Deutsche Bank initiated Capital One (NYSE: COF) with a Sell rating and $24 target, citing the difficult economic environment and the potential for higher credit losses.
  
• Soleil started Hexcel (NYSE: HXL) with a Buy rating and $10 target and expects the company's military business to remain strong through 2010.
• On Semiconductor (NASDAQ: ONNN) was assumed with a Neutral rating and $3.80 target at UBS.
  
• Cbeyond (NASDAQ: CBEY) was initiated at Oppenheimer with a Perform rating.
• Brocade (NASDAQ: BRCD) was started with a Neutral rating at Piper Jaffray.

Analyst upgrades:

• Baird upgraded Adtran (NASDAQ: ADTN) to Outperform from Neutral based on valuation, new product cycles, and confidence in 2H08 results.
  
• Morgan Stanley upgraded shares of Repsol (NYSE: REP) to Overweight from Equal Weight as they believe the potential sale to Sacyr Vallehermoso SA could lead to a restructuring.
  
• Stanford lifted National Oilwell Varco (NYSE: NOV) to Buy from Hold citing valuation. In addition, the firm, which set a target of $70, thinks most of the drop in commodity prices is now over.
• Ryanair (NASDAQ: RYAAY) was raised to Hold from Sell at Societe Generale.
  
• Ann Taylor (NYSE: ANN) was upgraded at Piper to Neutral from Sell.
  
• Goldman added Illinois Tool Works (NYSE: ITW) to the Conviction Buy List.

Analyst downgrades:

• Argus downgraded shares of Constellation Energy (NYSE: CEG) to Hold from Buy post-close given the volatility in the stock as they can no longer recommend CEG until concerns over its capital and liquidity are resolved. Shares were also downgraded to Hold from Buy at Citigroup.
  
• Collins Stewart downgraded Lloyds TSB Group (NYSE: LYG) to Hold from Buy following the acquisition of HBOS (OTC: HBOOY) as they expect short-term weakness in the stock.

MOST NOTEWORTHY: Varian, Chipotle Mexican Grill and McDonald's were today's noteworthy downgrades:

• Thomas Weisel downgraded shares of Varian (NASDAQ:VARI) to Market Weight from Overweight following the company's Q3 results to reflect manufacturing relocation issues and the slowdown in organic growth. The firm lowered their target to $47 from $70.
  
• Jefferies cut Chipotle Mexican Grill (NYSE:CMG) to Hold from Buy following the company's in-line Q2 results, as they believe consumer headwinds and commodity inflation are likely to pressure EPS in coming quarters. The firm lowered their target to $80 from $100.
  
• Deutsche Bank downgraded McDonald's (NYSE:MCD) to Hold from Buy as they believe higher beef costs and slower traffic could drive reduced profitability and limit upside. The firm reduced their target to $63 from $67.

OTHER DOWNGRADES:

• AT&T (NYSE:T) was lowered to Neutral from Overweight at JP Morgan.
  
• Baird cut Citrix Systems (NASDAQ:CTXS) to Neutral from Outperform.
  
• Raymond James (NYSE:RJF) was lowered to Market Perform from Outperform at Wachovia.