Analyst upgrades:

• Banc of America/Merrill upgraded Gymboree (NASDAQ:GYMB) to Buy from Underperform and raised their target to $33 from $15 following the company's Q1 comparable store sales guidance.
  
• Oppenheimer upgraded Lam Research (NASDAQ:LRCX) to Outperform from Perform after channel checks indicated the company's shipments are gaining momentum. The firm raised their price target on the stock to $35 from $20.
  
• Owens & Minor (NYSE:OMI) was raised to Outperform from Neutral at Credit Suisse. The firm upgraded shares but lowered their target to $45 from $46 citing underappreciated earnings growth and valuation.
• Albermarle (NYSE:ALB) was upgraded to Conviction Buy from Neutral at Goldman.
  
• Protective Life (NYSE:PL) was upgraded to Neutral from Sell at UBS.
  
• Maxim (NASDAQ:MXIM) was lifted to Buy from Hold at Canaccord.

Analyst upgrades:

• Cowen upgraded Aaron Rents (NYSE: RNT) to Outperform from Neutral and believes the company's business model is gaining momentum despite the difficult environment. The firm views valuation as attractive.
  
• Citigroup upgraded shares of MedCath (NASDAQ: MDTH) to Hold from Sell on valuation following the recent sell-off. The company's target was lowered to $9 from $19.
  
• Stanford upgraded AeroVironment (NASDAQ: AVAV) to Buy from Hold based on valuation and because they believe its visibility over the next year has improved.
• Chiquita Brands (NYSE: CQB) was lifted to Buy from Hold at BB&T.
  
• Chico's FAS (NYSE: CHS) was upgraded to Neutral from Sell at UBS.
  
• FCStone (NASDAQ: FCSX) was raised to Strong Buy from Outperform at Raymond James.

Analyst downgrades:

• RBC Capital downgraded Clearwire (NASDAQ: CLWR) to Sector Perform from Outperform based on reduced valuation parameters and lack of catalysts. The company's target was lowered to $9 from $15.
• Kellogg (NYSE: K) and Coca-Cola (NYSE: KO) were cut to Neutral from Buy at UBS.
  
• Evergreen Solar (NASDAQ: ESLR) was downgraded at JP Morgan to Underweight from Neutral.
• Deutsche Telekom (NYSE: DT) was downgraded to Neutral from Buy at Goldman and to Hold from Buy at Deutsche Bank.

Analyst upgrades:

• Goldman upgraded shares of Novartis (NYSE: NVS) to Buy from Neutral as they believe the Alcon (NYSE: ACL) acquisition has diversified the company's business.
  
• Tyson Foods (NYSE: TSN) was upgraded to Equal Weight from Underweight on valuation.
  
• JP Morgan raised Albermarle (NYSE: ALB) to Overweight from Neutral.
  
• BMO Capital upgraded Wynn Resorts (NASDAQ: WYNN) to Outperform from Market Perform.
  
• Synovus Financial (NYSE: SNV) was lifted to Buy from Hold at Sterne Agee.

Analyst downgrades:

• Morgan Stanley downgraded Reynolds American (NYSE: RAI) to Underweight from Equal Weight based on the impact from Altria's (NYSE: MO) purchase of competitor UST (NYSE: UST), which may result in pricing pressure.
  
• Goldman downgraded AstraZeneca (NYSE: AZN) to Sell from Neutral as they believe shares do not support near-term fundamentals.
• Max Capital (NASDAQ: MXGL) was downgraded to neutral from Buy at Banc of America.
  
• AudioCodes (NASDAQ: AUDC) was lowered at Merrill to Neutral from Buy.
  
• Pinnacle Financial (NASDAQ: PNFP) was downgraded to Neutral from Outperform at Baird.

Goldman Sachs downgraded General Motors (NYSE:GM) to "sell" from "neutral" and lowered its price target to $11 from $19, according to MarketWatch.

A Goldman Sachs analyst removed chemical producer Albemarle (NYSE:ALB) from his "Conviction Buy" list, according to the AP.

JPM Securities has downgraded Research-In-Motion (NASDAQ:RIMM) to "market perform" from "outperform", according to Briefing.com. The news service also reports Morgan Stanley upgraded Barclays (NYSE:BCS) to "overweight" from "equal weight"

Douglas A. McIntyre is an editor at 247wallst.com.

MOST NOTEWORTHY: The Department store sector, SanDisk and CNET Networks were today's noteworthy downgrades:

• Goldman downgraded the department store sector to Neutral from Attractive after raising its 2008 oil forecast to $149 from $115, as it believes higher gas prices will impact consumer discretionary spend and sentiment. Goldman downgraded JC Penney (NYSE: JCP) and Nordstrom (NYSE: JWN) to Neutral and also removed Kohl's (NYSE: KSS) from its Conviction Buy List.
  
• JMP Securities downgraded SanDisk (NASDAQ: SNDK) to Underperform from Market Perform based on increased competition in NAND, a potential decline in royalty income, valuation, and lack of catalysts from flash-based solid state drives.
  
• CNET Networks (NASDAQ: CNET) was cut to Neutral from Buy at Banc of America following the tender offer from CBS (NYSE: CBS).

OTHER DOWNGRADES:

• Merrill downgraded Regions Financial (NYSE: RF) to Sell from Neutral.
  
• B. Riley downgraded Exar (NASDAQ: EXAR) to Neutral from Buy.
  
• Albermarle (NYSE: ALB) was lowered to Neutral from Overweight at JP Morgan.

MOST NOTEWORTHY: Disney, McClatchy News and McDonald's were today's noteworthy downgrades:

• Citigroup downgraded shares of Disney (NYSE: DIS) to Sell from Hold after their databases indicated a slowdown in Parks is likely. They believe the slowdown in Parks will be coupled with a broader ad slowdown and lowered their target to $26 from $36.
  
• Wachovia lowered its rating on McClatchy News (NYSE: MNI) to Market Perform from Outperform and has concerns that the California and Florida markets could weaken further.
  
• McDonald's (NYSE: MCD) was downgraded to Peer Perform from Outperform at Bear. The firm cited slowing US sales, international business sensitivity to the economy, and valuation.

OTHER DOWNGRADES:

• NYMEX (NYSE: NMX) was downgraded to Hold from Buy at Citigroup.
  
• Oppenheimer downgraded Albermarle (NYSE: ALB) to Perform from Outperform.
  
• Goldman downgraded Grupo Aeroportuario (NYSE: ASR) to Sell from Neutral.