Career Education (CECO) closed at $22.30, selling off 19% in late afternoon trading on Dec. 18 after the Office of Inspector General sent out a negative letter concerning the for-profit education group. CECO January option implied volatility is at 58, above a level of 45 from December 16. April volatility is at 55; above its 26-week average of 43 according to Track Data, suggesting traders purchasing options to hedge price movement.

Three stocks with IV rise on Dec. 18: Sun Microsystems (JAVA) +3%, PowerShares DB US Dollar Index Bullish Fund (UUP) +2%, Walgreen's (NYSE-WAG) +2%, according to IVolatility.

Option Update is provided by Stock Specialist Paul Foster of theflyonthewall.com.

MOST NOTEWORTHY: The educational services industry, the Latin American airlines sector, Asta Funding Inc (NASDAQ: ASFI) and Chipotle Mexican Grill Inc (NYSE: CMG) were today's noteworthy initiations:

• William Blair assumed coverage of Apollo Group Inc (NASDAQ: APOL) and Strayer Education Inc (NASDAQ: STRA) with Outperform ratings and Career Education Corporation (NASDAQ: CECO) with a Market Perform rating. The broker also assumed coverage and downgraded DeVry Inc (NYSE: DV) to Market Perform from Outperform.
  
• Goldman Sachs initiated coverage on Copa Holdings (NYSE: CPA) with a Buy rating and $88 target, GOL Linhas Aereas Inteligentes SA (NYSE: GOL) and TAM SA (NYSE: TAM) with Neutral ratings and Lan Airlines SA (NYSE: LFL) with a Sell rating and $93 target; Lan Airlines was also initiated at Morgan Stanley with an Overweight rating and $105 target.
  
• Asta Funding was initiated at Kaufman Brothers with a Buy rating and $55 target. The firm believes the company should grow earnings at a midpoint of 20% over time, with near-term growth at 15% and longer-term growth at 20%-25%.
  
• Citigroup initiated shares of Chipotle Mexican Grill with a Buy rating and $100 target, as the firm expects the company will see unit growth at a rate in the high-teens while experiencing above-average SSS and some margin expansion.

OTHER INITIATIONS:

• BMO Capital initiated shares of CDC Corp (NASDAQ: CHINA) with a Market Perform rating and $11 target.
  
• Jazz Technologies Inc (NYSE: JAZ) was initiated with a Buy rating and $5 target at Wedbush Morgan Securities.
  
• Calyon Securities initiated shares of Pinnacle Entertainment Inc (NYSE: PNK) with an Add rating and $32 target.
• Luminex Corporation (NASDAQ: LMNX) was initiated with a Buy rating at Pacific Growth Equities.

MOST NOTEWORTHY: General Electric Co (GE), Brocade Communications Systems Inc (BRCD) and Netease.com Inc ADS (NTES) rounded out today's more notable upgrades:

• UBS upgraded General Electric Co (NYSE: GE) to Buy from Neutral with a $14 target based on valuation and expectations for strong earnings in its gas turbine business.

• Brocade Communications Systems Inc (NASDAQ: BRCD) was upgraded by Goldman Sachs to Buy from Neutral with an $11 target to reflect the cost savings associated with the McData acquisition. Bear Stearns also upgraded Brocade to Outperform from Peer Perform following its Q1 report and $200 buyback; Raymond James upgraded shares to Outperform from Market Perform.

• Deutsche Bank upgraded Netease.com Inc ADS (NASDAQ: NTES) to Hold from Sell with a $23 target following the company's Q4 report.

OTHER UPGRADES:

• Credit Suisse upgraded Reuters Group ADS (NASDAQ: RTRSY) to Outperform from Neutral citing the company's favorable outlook.

• Citigroup upgraded Moody's Corp (NYSE: MCO) to Buy from Hold with a $77 target as they believe weakness surrounding the company's quarter has created a buying opportunity.

• William Blair upgraded Career Education Corp (NASDAQ: CECO) to Market Perform from Underperform.

• BWS Financial upgraded shares of CuraGen Corp (NASDAQ: CRGN) to Strong Buy from Buy with an $8 target following its recent sell-off. The firm believes the concerns that CuraGen will not be able to sell its 454 Life Science stake are baseless.

• Caris upgraded Marvell Technology Group (NASDAQ: MRVL) to Above Average from Average following its solid quarter as they believe Marvell has worked through the excess inventory in storage and wireless LAN. Needham also upgraded Marvell Tech to Buy from Hold with a $26 target following its Q4 results.

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

MOST NOTEWORTHY: Career Education Corp (CECO) and Expedia Inc (EXPE) were today's most notable downgrades:

• Prudential downgraded Career Education Corp (NASDAQ: CECO) to Underweight from Neutral with a $20 target based fourth quarter results and guidance.

• Expedia inc (NASDAQ: EXPE) was downgraded to Sector Performer from Sector Outperformer based on a deteriorating outlook and valuation following the weak fourth quarter.

OTHER DOWNGRADES:

• Various retail dining companies were downgraded today:
  
• Denny's Corp (NASDAQ: DENN) was reduced to Neutral from Buy at Merriman, citing weak traffic trends and the net unit growth delay into 2008.
• UBS downgraded Applebee's Int'l Inc (NASDAQ: APPB) to Neutral from Buy as they believe sales and traffic declines are likely to continue until easier comps in the second quarter.
  
• BB&T downgraded California Pizza Kitchen Inc (NASDAQ: CPKI) to Hold from Buy on valuation and concerns about earnings visibility.
  

• Constellation Brands Inc (NYSE: STZ) was cut to Neutral from Buy at Goldman Sachs on concerns around upcoming guidance and their belief that a recovery in the U.K. and Australia is at least a year away.
  

• Goldman downgraded WellCare Health Plans Inc (NYSE: WCG) to Sell from Neutral.
  

• Citigroup downgraded Petrobras Energia Participaciones ADS (NYSE: PZE) and Consolidated Communications Holdings Inc (NASDAQ: CNSL) to Sell from Hold.
  

• WedBush downgraded Take-Two Interactive Software (NASDAQ: TTWO) to Sell from Hold with a $15 target to reflect less optimism about the company's sport franchise and risk from the NY AG investigation.

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

After peaking at $98 a share in June 2004, Apollo Group' s stock has headed straight downhill and now trades at about $41.

After a great bull run that began in 1995, the industry began to mature and these stocks rolled over.

We blogged earlier today about how Pequot Capital's chief, Art Samberg, likes cotton. He also is looking for a turnaround in publicly traded education stocks. The stocks he likes are Apollo Group (NASDAQ: APOL), Career Education (NASDAQ: CECO) and Corinthian Colleges (NASDAQ: COCO).

Apollo has been putting a lot of money into its on-line community college program, Axia College, which it hopes can accelerate Apollo's growth rate. Management is hopeful Axia will be a feeding tube for its four-year on-line college, University of Phoenix.

Samberg also believes Career Education, which has been a real bloodbath, could be ripe for a turnaround under new management.

Publicly traded education stocks, as an industry, have stayed away from using leveraged balance sheets. Samberg notes that if current valuation persists and if fundamentals start improving, private equity firms could find these companies very attractive.

MOST NOTEWORTHY: Hansen Natural (HANS), CVS Corp (CVS) and Career Education (CECO) top today's extensive list of downgrades.

• Hansen Natural Corp. (NASDAQ:HANS) was removed from Goldman Sachs Conviction Buy List due to the lack of near-term catalysts.
• CVS Corp (NYSE:CVS) was removed from the Focus List at Merrill Lynch.
• Career Education Corp. (NASDAQ:CECO) was downgraded to Hold from Strong Buy at Matrix USA due to the declining environment that is leading to slower sales growth.

OTHER DOWNGRADES:

• A.G. Edwards downgraded Westwood One, Inc (NYSE:WON) to Sell from Hold as fundamentals are not stabilizing. Deutsche Bank also downgraded the media programmer to Hold from Buy.
• Avaya, Inc. (NYSE:AV) was downgraded to Market Perform from Outperform at Morgan Keegan.
• Finally, Potash Corporation of Saskatchewan, Inc. (NYSE:POT) was downgraded to Neutral from Buy at UBS on valuation.

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