As always, there is a volume of speculation after the much anticipated release of the quarterly changes in holdings report from Berkshire Hathaway (BRK.A). While leaving all the deep analytical number crunching for greater minds than my own, I'd like to take a look at what Warren Buffett could be telling us through his company's latest form 13F.

Why has Warren Buffett swallowed Burlington Northern Santa Fe (BNI) while letting go of Norfolk Southern (NSC) and Union Pacific (UNP)? Being the master of due diligence, Mr. Buffett has most likely determined that BNI is the most attractive of the three. The future of rail transport is all but guaranteed to shine, and I believe that Mr. Buffett has exited the other two rail companies simply to avoid conflict of interest issues.

Analyst Upgrades

• Baird upgraded Intel (INTC) to outperform from neutral and has a $26 target on the stock. The firm's checks indicate tier-one PC OEMs have raised their 1H10 procurement forecasts, which could lead to Intel outperformance.
• Citigroup upgraded UnitedHealth (UNH) to buy from hold on expectations the company will benefit from a sector rotation into Managed Care in 2010. The firm raised its price target on shares to $39 from $30.
• UBS upgraded Morgan Stanley (MS) to buy from neutral based on strong capital and liquidity positions, building investment banking pipelines, and expectations for a turn in EPS/ROE, among other reasons.
• Deutsche Bank upgraded the U.S. Refining group as it believes demand is improving and margins could expand in 2010. The firm raised its rating on Sunoco (SUN) to hold from sell and its target on shares to $25 from $18, and upgraded Tesoro (TSO) and Frontier Oil (FTO) to buy from hold.
• Boeing (BA) was raised to overweight from equal weight at Barclays.
• Wynn Resorts (WYNN) was upgraded at UBS to buy from neutral.
• Investors Bancorp (ISBC) was upgraded to buy from neutral at Janney Montgomery.

Analyst Upgrades

• Keefe Bruyette upgraded Jefferies (JEF) to outperform from market perform based on valuation and improved M&A advisory and underwriting prospects. The firm has a $30 target on the shares.
• JPMorgan upgraded Cosan (CZZ) to overweight from neutral based on valuation.The firm has a $10 target on shares.
• Deutsche Bank upgraded CTC Media (CTCM) to buy from hold, citing better-than-expected operational performance and the impact of recent ad law changes. The firm has a $17 target on shares.

Insurance companies just bought themselves a year. Claiming that a proposed tax on health insurance would force them to charge higher premiums, carriers were able to convince senators to defer this particular measure for a year.

This comes as a benefit to UnitedHealth Group (UNH), WellPoint (WLP) and smaller companies writing health insurance policies. Manufacturers of medical devices have won some relief, as well, though the drug business didn't. An earlier plan to tax cosmetic medical procedures was also scrapped.

UnitedHealth (UNH) closed at $29.08 Friday, near one-year high. UnitedHealth is hosting an investor meeting on December 2. December option implied volatility is at 40; January is at 42; below its 26-week average of 48 according to Track Data, suggesting decreasing price movement.

Semiconductor Holders Trust - SMH overall volatility at 29; 26-week average is 33.

Russell 2000 - IWM overall implied volatility at 27; 26-week average is 33.

Financial Select Sector - XLF overall volatility at 34; 26-week average is 40.

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

• Citigroup upgraded Procter & Gamble (NYSE:PG) to Buy from Hold after meeting with management as it believes a more aggressive strategy will lead to the company regaining market share. Citi raised its target on shares to $66 from $54.
  
• Piper Jaffray upgraded Allscripts (NASDAQ:MDRX) to Overweight from Neutral after learning the company signed a large contract with North Shore Long Island Jewish Hospital. Piper now sees upside to estimates and raised its target on shares to $22.50 from $14.
  
• UBS upgraded Amedisys (NASDAQ:AMED) to Buy from Neutral following a review of the Senate Finance Committee's healthcare proposal, which they view as "benign." The firm raised its target to $57 from $46.
• Daimler (NYSE:DAI) was upgraded to Outperform from Market Perform at Bernstein.
  
• Boston Private (NASDAQ:BPFH) was upgraded to Outperform from Market Perform at Keefe Bruyette.
  
• E-Trade (NASDAQ:ETFC) was upgraded to Buy from Neutral at Goldman.

Analyst upgrades:

• B. Riley upgraded Finish Line (NASDAQ: FINL) to Buy from Neutral to reflect the potential for improving trends in second half of 2009. The firm raised its target on shares to $10.50 from $9.
• Merriman upgraded OptionXpress (NASDAQ: OXPS) to Neutral from Sell following the company's better than expected Q2 results. The firm notes higher commissions per trade more than offset weak DARTs and the decline in customer additions in the quarter.
• RBC Capital upgraded Gardner Denver (NYSE: GDI) to Outperform from Sector Perform and raised its target to $34 from $28 citing the additional scale of restructuring, better tone to end-markets, and few downside catalysts. Baird upgraded Gardner Denver to Outperform from Neutral and raised its target to $35 from $32 based on a bottom in fundamentals and compelling valuation.
• BE Aerospace (NASDAQ: BEAV) was upgraded to Outperform from Market Perform at FBR Capital.
• Shire (NASDAQ: SHPGY) was upgraded to Perform from Underperform at Oppenheimer.
• UnitedHealth (NYSE: UNH) was upgraded to Outperform from Neutral at Credit Suisse.

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

• Amazon.com Inc. (NASDAQ: AMZN) met Q2 earnings estimates but fell short of revenue expectations.
• Coca-Cola Co. (NYSE: KO) lower Q2 results beat expectations, lifted by strength in non-cola beverages.
• Continental Airlines Inc. (NYSE: CAL) reported net loss was accompanied by a job cuts announcement.
• Ford Motor Co. (NYSE: F) surprised with a Q2 profit due mainly to a huge gain from debt reduction.
• Hasbro Inc. (NYSE: HAS) posted better-than-expected Q2 earnings due to Transformers and G.I. Joe toys.
• Hershey Co. (NYSE: HSY) posted strong numbers for Q2 and also raised its full-year guidance.