Netflix (NFLX) January put option implied volatility is low at 42, February is at 57; compared to its 26-week average of 52, according to Track Data, suggesting decreasing near-term price movement.

China Valves Technology (CVVT) overall option implied volatility of 61 is near its 26-week average, according to Track Data, suggesting nondirectional price movement.

Wonder Auto (WATG) overall option implied volatility of 68 is near its 26-week, average according to Track Data, suggesting nondirectional price movement.

Analyst Upgrades

• Citigroup upgraded Mosaic (MOS) to buy from hold and raised its price target to $78 from $64 citing improving ag fundamentals and the potential for BHP (BHP) to issue a higher bid for Potash (POT), which Citi feels would bode well for Mosaic.
• Cowen upgraded VMware (VMW) to outperform from neutral, citing recent share weakness and the company's significant growth opportunity.
• Citigroup upgraded CareFusion (CFN) with a $29 price target, citing valuation and the potential for margin expansion.
• Pfizer (PFE) was upgraded to outperform from neutral at Cowen.
• Juniper (JNPR) was upgraded to outperform from perform at Oppenheimer.
• Stryker (SYK) was upgraded to buy from gradually accumulate at Soleil.

Here are some highlights from this past week's earnings coverage on BloggingStocks:

• Adobe Systems Inc. (ADBE) reported that Q1 revenue was up but earnings declined sharply, and it offered guidance.
• Best Buy Inc. (BBY) shares rallied after it topped Q4 earnings expectations and offered encouraging guidance.
• Brinker International Inc. (EAT) raised its outlook for fiscal 2010 and also increased its quarterly dividend.
• China Automotive Systems Inc. (CAAS) reported that its revenue had doubled and it beat earnings expectations.
• ConAgra Foods Inc. (CAG) Q3 earnings matched estimates and revenue was flat, and it reaffirmed its outlook.
• Finish Line Inc. (FINL) shares rallied after it reported that Q4 earnings came in better than analysts' expected.

As an investor in Chinese stocks, I'm constantly bombarded by predictions of the country's coming economic bust. When a scandal at poultry company Yuhe International (YUII) brutalized this stock, people emailed me, saying that all Chinese companies are cooking the books. When a China-based ETF pegged to the S&P 500 launched, I was told that it was a clear sign that investors there knew it was safer to invest here than in their own country. The list goes on and on.

Lately, the recent pullback in several high-profile Chinese stocks, as well as a pullback in the iShares FTSE/Xinhua China 25 Index (FXI) -- the major Hong Kong market index -- has been cited as more evidence for the country's pending economic hardship. While it is true that some stocks have sold off lately after big runs higher in 2009, FXI is only down 3.8% over the past three months. That's hardly a huge giveback. And besides, America itself would be in pretty dire straits if every market slide meant that its economy was doomed.

Analyst upgrades:

• American Express (NYSE:AXP) was upgraded to Market Perform from Underperform at FBR Capital, as the firm sees limited near-term downside in the stock. The firm raised its target price on the shares to $37 from $25.
  
• RBC Capital upgraded Estee Lauder (NYSE:EL) to Outperform from Sector Perform. Target to $44 from $34. UBS upgraded Nestle on expectations the company will begin returning cash to shareholders via buybacks and dividends.
  
• Piper Jaffray raised Dicks Sporting (NYSE:DKS) to Neutral from Underweight following positive channel checks and raised its target on the shares to $28 from $18.
  
• Sohu.com (NASDAQ:SOHU) was upgraded to Neutral from Sell by Pali Capital.
  
• Halliburton (NYSE:HAL) was raised to Buy from Hold by Natixis.
  
• Sunpower (NASDAQ:SPWRA) was upgraded to Neutral from Underperform at Macquarie.
• China Automotive (NASDAQ:CAAS) was upgraded to Buy from Neutral at Merriman.