Here are some highlights from last week's earnings coverage from BloggingStocks:

• Abbott Laboratories (NYSE: ABT) higher Q3 earnings topped expectations but revenue was in line.
• Advanced Micro Devices Inc. (NYSE: AMD) posted better-than-expected Q3 results, but shares sold off.
• Allegheny Technologies Inc. (NYSE: ATI) was downgraded on concerns about its Q4 guidance.
• Bank of America Corp. (NYSE: BAC) shares fell after it posted a deeper-than-expected quarterly loss.
• Citigroup Inc. (NYSE: C) fell victim to profit taking despite reporting better-than-expected earnings.
• CSX Corp. (NYSE: CSX) better-than-expected Q3 earnings sent shares higher, despite a decline in revenue.

Analyst upgrades:

• Keefe Bruyette upgraded Intercontinental Exchange (NYSE: ICE) to Outperform from Market Perform on expectations that derivatives trading will increase in the coming quarters.
• NutriSystem (NASDAQ: NTRI) was upgraded to Buy from Neutral by Janney Montgomery, which believes that the company's earnings have hit bottom, while the company could report better-than-expected Q1 results.
• Harley-Davidson (NYSE: HOG) was upgraded to Outperform from Sector Perform at RBC Capital. The firm thinks the company is an early-cycle story that has significant upside potential.
• UBS upgraded Walgreen (NYSE: WAG) to Buy from Neutral citing cost cutting efforts and slowing store growth.
• Google (NASDAQ: GOOG) was upgraded to Buy from Hold at Benchmark Co.
• Safeway (NYSE: SWY) was upgraded to Buy from Hold by BB&T.
• Needham upgraded Targacept (NASDAQ: TRGT) to Buy from Hold.
• Sierra Wireless (NASDAQ: SWIR) was raised to Buy from Hold at Jesup & Lamont.

Maybe days with no solid economic data are the best after all. The Saudis denied that OPEC was considered moving away from oil being quoted in US Dollars and gold put in new all-time contract highs. T. Boone Pickens was also out with his new 2010 oil price predictions this morning.

Here were today's unofficial closing bell levels:

Dow 9,731.25 +131.50 (1.37%)
S&P 500 1,054.72 +14.26 (1.37%)
Nasdaq 2,103.57 +35.42 (1.71%)

Analyst Calls: Top Upgrades and Top Downgrades
Top Day Trader Alerts
Top Rumors of the Day

NutriSystem Inc. (NASDAQ: NTRI) has worked out a deal to have its weight-loss products sold at Costco (NYSE: COST) stores. Until now, Nutrisystem products had been sold almost exclusively through the company's website and TV commercials.

NutriSystem's Senior Vice President of Business Development Will Auchincloss said that "We see Costco as a great partner during these tough economic times, and are excited to leverage our direct to consumer model in the retail channel with Costco. Through their gift card program, Costco will allow us to expand our existing customer base in the retail channel and capitalize on our strong consumer brand."

I'm not so sure how exciting this is: Nutrisystem has grown rapidly over the past few years with a strong marketing campaign and non-traditional distribution model. It's not like this is the first time that it's occurred to them that they could partner with retailers so the question is: Why now?

The deal with Costco isn't completely outside of NutriSystem's model, as the food will still be delivered by mail. So far investors appear to be shrugging it off.

Most of the myths regarding market moves are not worth the paper they're printed on. That said, one old wives' tale worth noting, and even following, is the January effect.

For whatever reason, small-cap stocks do indeed outperform their larger brethren during the month of January.

I recently provided a list of 5 Stocks for the January Effect. On the list was a former high-flyer that lost enough market value to now qualify as a small-cap stock -- NutriSystem (NASDAQ: NTRI).

NutriSystem captured the investor imagination with its unique solution to weight loss and weight management. The company's home delivery of prepackaged meals promised ease of use with results.

Given the huge audience for such a solution, NTRI presented investors with a great growth opportunity. Even though it took a few years to catch on, investors eventually got the idea.

NutriSystem became a darling of the momentum crowd in 2005. In the span of a year and a half, the stock moved from the single digits to above $80 per share. Coinciding with a big marketing program, revenue and investors seemed to grow in tandem.

That's all well and good, but at some point valuation does matter. That time usually comes when growth or results fail to meet elevated expectations. For NTRI, that started to happen in mid-2007.

In no time flat the stock lost more than half its value as the momentum crowd fled. The stock has been trading on a flat line around $15 per share for most of 2008.

Analyst upgrades:

• Societe General upgraded BASF AG (OTC: BASFY) to Buy from Hold. The firm believes the bad news is out and that BASF has a strong market position.
  
• Pali Capital upgraded Hot Topic (NASDAQ: HOTT) to Buy from Neutral based on the ongoing merchandise catalyst, the opportunity to reclaim the mainstream kid and closing underperforming stores, which create the most favorable conditions in the last 5+ years.
  
• Stanford upgraded L-1 Identity (NYSE: ID) to Buy from Hold on valuation, and the firm sees little risk to the company from the Obama Administration.
• Gymboree (NASDAQ: GYMB) and Windstream (WIN) were raised to Overweight from Neutral at JP Morgan.
  
• Doral Financial (NYSE: DRL) was upgraded at B. Riley to Buy from Neutral.
  
• Alumina (NYSE: AWC) was upgraded to Buy from Neutral at UBS.

Analyst downgrades:

• Credit Suisse downgraded Targanta (NASDAQ: TARG) to Underperform from Outperform following the FDA Panel's rejection of Oritavancin.
  
• Citigroup downgraded BASF AG (OTC: BASFY) to Sell from Hold and sees no reason to own the stock following the company's profit warning. Shares were also downgraded at WestLB to Hold from Add.
  
• Deutsche Bank downgraded shares of Amedisys (NASDAQ: AMED) to Hold from Buy and lowered its target to $53 from $75 on concerns over the company's deteriorating A/R aging trends.
• VeriFone Holdings (NYSE: PAY) and Navios Maritime (NYSE: NMM) were lowered to Neutral from Overweight at JP Morgan.
  
• NTT DoCoMo (NYSE: DCM) was downgraded at Citigroup to Hold from Buy.

Analyst initiations:

• Needham expects shares of Cepheid (NASDAQ: CPHD) to be driven by continued market penetration in the hospital acquired infection market, new test introductions, GeneXpert Infinity sales, and molecular diagnostics growth from sales outside of traditional molecular testing areas. Shares were initiated with a Buy rating and $21 target.
  
• Needham also initiated Gen-Probe (NASDAQ: GPRO) with a Hold rating and expects market share gains for the company when PANTHER is approved in 2010/2011.
  
• William Blair believes Harbin Electric (NASDAQ: HRBN) is an "interesting" opportunity for exposure to rapid growth in infrastructure within the People's Republic of China. The firm started shares with a Market Perform rating.
• Boston Scientific (NYSE: BSX) was initiated with a Buy rating and $11 target at UBS.
  
• NutriSystem (NASDAQ: NTRI) was initiated with a Neutral rating at Janney Montgomery.
  
• Ener1 (NYSE: HEV) was assumed at JMP Securities with an Outperform rating and $9 target.
  

JP Morgan downgraded Altria (NYSE:MO) from "overweight" to "neutral" according to Briefing.com. The news service also reports that Morgan Stanley downgraded SLM (NYSE:SLM) to "underweight" from "equal weight."

Lehman Bros. started coverage of NutriSystem (NASDAQ:NTRI) with an "underweight" rating, according to the AP.

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

NutriSystem (NASDAQ: NTRI) is a leading provider of weight management services. The company offers weight loss programs based on portion-controlled meals, individualized calorie plans, behavior modification and exercise. Customers order monthly food packages and receive free online/telephone counseling. The program has no membership fees. NutriSystem also owns and operates more than 100 Slim and Tone women's fitness centers. Competitors include Weight Watcher's International (NYSE: WTW) and eDiets.com (NASDAQ: DIET).

The firm pleased investors earlier in the week, when it offered better than expected first quarter revenue guidance. Management said it anticipated Q1 sales of $216 million, topping the average analyst view of $203.46 million. The solid performance was attributed to better marketing and customer retention. Separately, Chairman and CEO Michael Hagan said he would relinquish his chief executive title to President and COO Joseph Redling on May 1st. The stock was subsequently upgraded to "market perform" by Boenning & Scattergood, which also declared a $30 price target.

If you wanted to look for the blame-game on why stocks listed lower most of the day, you could blame pending home sales at lows, higher oil prices, and even the FOMC minutes hinting at recession without saying "recession." We also saw the White House say it couldn't endorse the current structure of the proposed housing bill.

The truth is, Wall Street and Main Street are also coming to grips with the fact that we are about to get earnings (and guidance) from companies that we can only hope is mixed. Otherwise we just have to hope for "less-bad" news. Get ready for the legacy airline sector's low P/E and low Price to Book values to disappear completely. Below are the unofficial closing bell index prices:

• Dow 12,576.44 (-35.99; -0.29%)
• S&P 500 1,365.54 (-7.00; -0.51%)
• NASDAQ 2,348.76 (-16.07; -0.68%)
• 10YR-TBond 3.558% (+0.002%)
• Full 52-week lows.
• See Top 10 Pre-Market Analyst Calls.

Advanced Micro Devices (NYSE: AMD) saw shares fall almost 5% to $6.03 after it issued an earnings and revenue warning on Monday after the close. Had it not announced a major layoff plan, this would have been far worse. So much for this "growth story."

Sharper Image (NASDAQ: SHRP) is down almost 31% on news that it will file Chapter 11.

Nutrisystems (NASDAQ: NTRI) is off 23% on poor earnings and a weak outlook.

Hewlett-Packard (NYSE: HPQ) is up over 4% on a strong quarter.

AT&T (NYSE: T) is trading off almost 3% on analyst downgrades.

Shares may trade differently in the premarket than they do in the regular session.

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

With all the eating that took place over the last few weeks, it's time to try and shed those unwanted pounds. For those looking to invest based on this inevitable trend, take a look at NutriSystem (NASDAQ: NTRI). The company offers a weight-loss program based on portion-controlled, lower Glycemic Index prepared meals. The stock has certainly shed some girth over the last year, getting trimmed by over 65%.

While you can let me know if you think their meals are tasty or not, at these levels the stocks looks really attractive, sort of like the piece of hot chocolate cake that is staring me in the eyes as I write this! The stock is trading at a PE of just 8.08 and a PEG of 0.44. Their remains a large short-interest on the stock, which is keeping the pressure on, but if the company has some good news, the shorts will have to cover and this could take off like a rocket. At $25 a share, this looks like their will be plenty of upside to the stock price.

Aaron Katsman is the lead Portfolio Manager and Managing Director of America Israel Investment Associates, LLC. and Senior Editor of IsraelNewsletter.com. Disclosure: Writer has no position long or short in any stock mentioned as of 1/3/08.

Baidu(NASDAQ:BIDU) will be added to the NASDAQ-100 this morning. BIDU, a Chinese language internet search provider, is recently up $9.79 to $394.77. BIDU December option implied volatility of 79 is above its 26-week average of 60 according to Track Data, suggesting larger price fluctuations.

NutriSystem(NYSE:NTRI) volatility Elevated as shares near two-year low. NTRI closed at $25.37. NTRI over all option implied volatility of 72 is above its 26-week average of 51 according to Track Data, suggesting larger price risk.

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

MOST NOTEWORTHY: NutriSystem, Endo Pharmaceuticals, Corporate Express NV, Aventine Renewable Energy Holdings and BioFuel Energy were today's noteworthy downgrades:

• NutriSystem (NASDAQ: NTRI) was downgraded to Hold from Buy at Lazard and to Buy from Strong Buy at Broadpoint following its lowered Q3 guidance.
  
• Jefferies downgraded shares of Endo Pharmaceuticals (NASDAQ: ENDP) to Hold from Buy after Impax Laboratories (NASDAQ: IPXL) filed a Paragraph IV challenge against Opana ER yesterday to reflect the potential for a generic version of Opana ER arriving as early as 2010 and the possibility of a similar threat against Lidoderm.
  
• Corporate Express (NYSE: CXP) was downgraded to Hold from Buy at ING, as they believe the new CEO's long-term targets are overly ambitious.
  
• JP Morgan downgraded Aventine Renewable (NYSE: AVR) and BioFuel Energy (NASDAQ: BIOF) to Neutral from Overweight, citing weaker fundamentals in ethanol pricing.

OTHER DOWNGRADES:

• JP Morgan downgraded Charlotte Russe (NASDAQ: CHIC) and The Wet Seal (NASDAQ: WTSLA) to Neutral from Overweight.
  
• Goldman downgraded Monolithic Power Systems (NASDAQ: MPWR) and Hansen Natural (NASDAQ: HANS) to Neutral from Buy; Goldman removed National Semiconductor (NYSE: NSM) from its Conviction Buy List.

NutriSystem (NASDAQ: NTRI), a weight management and fitness products and services company, is recently down $10.57 to $37 in pre-open trading, some 22%.

• NTRI announced disappointing third quarter results.
  
• Thomas Weisel says: "3Q fundamentals crumble; we expect challenges into FY08."
  
• NTRI overall option implied volatility of 59 is above its 26-week average of 47 according to Track Data, suggesting larger price risk.

LDK Solar (NYSE: LDK) is a manufacturer of multicrystalline solar wafers.

• LDK shares were weak on 10/3 on allegations of inconsistency in inventory reporting.
  
• LDK says: "LDK's management team and board of directors formed an internal committee to investigate the allegations and conduct an immediate physical inventory of LDK's polysilicon materials. The management team found no material discrepancies."
  
• LDK October option implied volatility of 131 is above its 12-week average of 69 according to Track Data, suggesting larger risk.

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

MOST NOTEWORTHY: NutriSystem, Under Armour, CME Group, Air France ADS and Kilroy Realty were today's noteworthy upgrades:

• NutriSystem (NASDAQ: NTRI) was upgraded to Strong Buy from Buy at Broadpoint on valuation, as they believe all concerns are overdone.
  
• Think Equities upgraded Under Armour (NYSE: UA) to Buy from Accumulate on valuation.
  
• Wachovia upgraded CME Group (NYSE: CME) to Overweight from Market weight, as they expect fed income volumes to benefit from a more active Federal Reserve.
  
• Goldman added Air France (NYSE: AKH) to its Pan-European Conviction Buy List citing valuation following the recent sell-off.
  
• Citigroup upgraded shares of Kilroy Realty (NYSE: KRC) to Buy from Hold on valuation, as they believe concerns are overblown and the company's underleveraged balance sheet can drive growth.

OTHER UPGRADES:

• UBS raised SXC Health Solutions (NASDAQ: SXCI) to Buy from Neutral.
  
• Think Equities upgraded Symantec Corporation (NASDAQ: SYMC) to Accumulate from Source of Funds.
  
• DA Davidson & Co upgraded Texas Industries (NYSE: TXI) to Buy from Hold.
  
• Lehman upgraded Intersil Corporation (NASDAQ: ISIL) to Equal Weight from Underweight.
  
• Keefe Bruyette upgraded SEI Investments (NASDAQ: SEIC) to Outperform from Market Perform.