Analyst Upgrades

• Medicis (MRX) to overweight from neutral at Piper Jaffray, to outperform from market perform at Bernstein, to outperform from sector perform at RBC Capital and to overweight from neutral at JPMorgan.
• Wellpoint (WLP) to buy from neutral at Davenport.
• Humana (HUM) to buy from hold at Jefferies.
• Frontier Oil (FTO) to equal weight from underweight and Resources Connection (RECN) to overweight from equal weight at Barclays.

Analyst Upgrades

• Goldman upgraded Eaton (ETN) to conviction buy from neutral.
• AECOM Technology (ACM) was upgraded to outperform from neutral at Macquarie.
• Piper Jaffray upgraded Hologic (HOLX), Gen-Probe (GPRO) and Qiagen (QGEN) to overweight from neutral.
• GeoMet (GMET) was upgraded to accumulate from neutral at Global Hunter.
• Accretive Health (AH) was upgraded to outperform from neutral at RW Baird.
• Morgan Stanley upgraded Reinsurance Group (RGA) to overweight from equal weight.
• BofA/Merrill upgraded Clearwire (CLWR) to neutral from underperform.

It will be a busy week. Republicans are poised to gain control of the House of Representatives and gain governorships in Tuesday's mid-term elections. Also, the Federal Reserve is expected to announce another round of quantitative easing Wednesday, following the FOMC meeting. Major retailers are scheduled to report October same-store sales Thursday, while the October unemployment rate, announced on Friday, is expected to remain at 9.6%.

Toyota's (TM) fiscal second-quarter results will be one of the highlights on the earnings front this week. After three periods of way underestimating Toyota's earnings, have the analysts surveyed by Thomson Reuters got it right this time? The stock sure could use a boost. Teva Pharmaceuticals (TEVA) is in a similar situation; i.e., high expectations for this week's quarterly results but a stock in need of a boost. Marathon (MRO) and Starbucks (SBUX) are also expected to post strong earnings growth this week, but both stocks are riding high.

Analyst Upgrades

• Verisk (VRSK) was upgraded to outperform from market perform at Wells Fargo.
• Marriott (MAR) was upgraded to outperform from market perform at Bernstein.
• Jefferies upgraded Teekay (TK) and Tsakos Energy (TNP) to Buy from Hold.
• Cadence Design (CDNS) was upgraded to sector perform from underperform at RBC Capital.
• BofA/Merrill upgraded NV Energy (NVE) to buy from underperform and Education Realty Trust (EDR) to neutral from underperform.
• Men's Wearhouse (MW) was upgraded to buy from hold at Stifel.
• William Blair upgraded Atheros (ATHR) to outperform from market perform.
• Freeport McMoran (FCX) was upgraded to buy from hold at Argus.

Analyst Upgrades

• GC Financial upgraded Microsoft (MSFT) to buy from hold, citing expectations that the company will raise its quarterly dividend by 15%. The firm upped its target for shares to $30 from $29.
• JPMorgan upgraded Agrium (AGU) to overweight from neutral, citing valuation and strengthening agricultural fundamentals. The firm raised its target for shares to $75 from $70. Note JPMorgan downgraded Mosaic (MOS) this morning to neutral from overweight.
• Susquehanna upgraded Baker Hughes (BHI) to positive from neutral based on valuation. The firm has a $53 target on the stock.
• Target (TGT) was upgraded to buy from neutral at BofA/Merrill.
• CF Industries (CF) was upgraded to conviction buy from neutral at Goldman.
• Portugal Telecom (PT) was upgraded to buy from hold at Deutsche Bank.

Analyst Upgrades

• Deutsche Bank upgraded Illinois Tool Works (ITW) to buy from hold, citing valuation and the company's strong revenue performance. The firm has a $60 price target for shares.
• Goldman upgraded PPD Inc. (PPDI) to buy from hold and raised its price target to $31 from $28. The firm expects strong top line growth and bookings momentum for the upgrade.
• Stifel Nicolaus upgraded Insituform Technologies (INSU) to buy from hold based on higher estimates for sewer rehab and energy. The firm has a $31 target on the stock.
• Patterson-UTI Energy (PTEN) was upgraded to overweight from equal weight at Morgan Stanley.
• Wisconsin Energy (WEC) and Northeast Utilities (NU) were upgraded to buy from neutral at UBS.
• Rockwell Collins (COL) was upgraded to buy from neutral at BofA/Merrill.

Analyst Upgrades

• FBR Capital upgraded Digital River (DRIV) to outperform from market perform on expectations the company's business activity is improving. The firm raised its price target for shares to $36 from $25.
• Cowen upgraded Carpenter Technology (CRS) to outperform from neutral, citing expectations for a restocking turnaround for the upgrade.
• Och-Ziff Capital (OZM) was upgraded to outperform from market perform at William Blair.
• Wellpoint (WLP) was upgraded to outperform from market perform at BMO Capital.
• Kohlberg Capital (KCAP) was upgraded to hold from sell at Stifel Nicolaus.

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.

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.

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

• Aflac Inc. (NYSE: AFL) reported strong Q3 results, declared a dividend, and offered guidance for Q4.
• Avon Products Inc. (NYSE: AVP) Q3 earnings slumped and revenue was hurt by currency translations.
• BP (NYSE: BP) shares leaped higher after it reported better-than-expected quarterly earnings.
• Daimler AG (NYSE: DAI) reported that it returned to profitability in Q3 but warned of decreasing revenue.
• General Dynamics Corp. (NYSE: GD) Q3 earnings beat expectations and it lifted its earnings outlook.
• Hershey Co. (NYSE: HSY) posted strong Q3 earnings and expects full-year earnings ahead of forecasts.

Even as the battle over health care reform rages on Capitol Hill, we are seeing a flurry of third quarter reports from insurers.

Aetna Inc. (NYSE: AET) reported Thursday that its third-quarter profit rose 18% from a year ago to $308.2 million, or $0.69 per share, topping Wall Street's expectations. Revenue came in at $8.72 billion, versus the consensus of $8.68 billion. Aetna also said share repurchases totaled 3.9 million at a cost of $114 million in the third quarter of 2009.